GOST 3282-74
INTERSTATE STANDARD
STEEL WIRE
LOW CARBON TOTAL
DESTINATIONS
TECHNICAL CONDITIONS
Date of introduction 01.07.75
This standard applies to round low-carbon steel wire, intended for the manufacture of nails, lashings, fences and other purposes.
1. TYPES AND MAIN DIMENSIONS
1.1. The wire is produced:
by type of processing:
heat treated - O;
thermally untreated;
by surface type:
without cover;
coated.
Heat-treated uncoated wire is produced light-colored (C), and by agreement between the consumer and the manufacturer, black (B) wire can be produced.
Coated wire is divided into:
galvanized 1st class - 1C,
galvanized 2nd class - 2C;
by manufacturing accuracy:
increased - P,
normal;
by temporary tensile strength (only for thermally untreated wire):
Group I - I,
Group II - II.
(Changed edition, Amendment No. 5).
1.2. The wire is made with a diameter of:
from 0.16 to 10.00 mm - without coating;
from 0.20 to 6.00 mm - coated.
The diameter of the wire and the maximum deviations along it must correspond to those indicated in the table. .
Table 1
mm
|
Nominal wire diameter |
Maximum deviation for wire diameter |
||||
|
increased accuracy |
normal accuracy |
increased accuracy |
normal accuracy |
||
Note: It is allowed to produce wire with two-sided maximum deviations. The tolerance field must correspond to that indicated in the table. .
(Changed edition, Amendment No. 5).
1.3. The ovality of the wire should not exceed half of the maximum deviations in diameter.
1.4. (Deleted, Change No. 5).
Examples of symbols
Wire with a diameter of 1.2 mm, heat-treated, high precision, light:
Wire 1 ,2 -P-ABOUT-WITH GOST 3282 -74
The same, with a diameter of 1.0 mm, heat-treated, normal accuracy, black:
Wire 1 ,0 -ABOUT-H GOST 3282 -74
The same, with a diameter of 1.2 mm, thermally untreated, class 2, increased accuracy, group II:
Wire 1 ,2 -P-2C- IIGOST 3282 -74 .
(Changed edition, Amendment No. 5, Amendment).
2. TECHNICAL REQUIREMENTS
Tensile strength, N/mm 2 (kgf/mm 2), for wire
Relative elongation d 100,%, not less, for heat-treated wire
thermally untreated
heat treated
without cover
coated
without cover
coated
From 0.16 to 0.45 incl.
St. 0.45 "1.00"
» 1.00 » 1.20 »
» 1.20 » 2.50 »
» 2.50 » 3.20 »
» 3.20 » 3.60 »
» 3.60 » 4.50 »
» 4.50 » 6.00 »
» 6.00 » 7.50 »
St. 8.00 to 10.00
2.4. The surface of the uncoated wire should be free of cracks, film, dullness and scale (with the exception of heat-treated black wire).
Local rippling, dents, marks, scratches are allowed on the surface of the wire, the depth of which should not be more than a quarter maximum deviation wire of normal precision.
(Changed edition, Amendment No. 5).
2.5. There should be no black spots on the surface of the galvanized wire that are not coated with zinc. Individual influxes of zinc are allowed, the value of which should not be more than half the maximum deviation from the actual diameter of the wire.
Inhomogeneity of wire color, white spots and shine are allowed, white coating, if the wire passes the coating quality test in accordance with the requirements of paragraphs. , .
(Changed edition, Amendment No. 1, 5).
Ratio of core diameter to wire diameter
Number of turns, not less
1st class
2nd class
From 0.20 to 1.60 incl.
St. 1.60 » 2.50 »
» 2.50 » 6.00 »
Superficial dusty peeling of the zinc coating on wound samples of galvanized wire is allowed.
(Changed edition, Amendment No. 5).
Number of dives
Surface density of zinc, g/m 2, not less
Number of dives
Duration of each dive, s
Wire 1st class
Wire 2nd class
From 0.20 to 0.32 incl.
St. 0.32 "0.40"
» 0.40 » 0.50 »
» 0.50 » 0.63 »
» 0.63 » 0.80 »
St. 0.85 to 1.00 incl.
» 1.00 » 1.20 »
» 1.20 » 1.60 »
» 1.60 » 2.00 »
St. 2.80 to 3.60 incl.
» 3.60 » 5.50 »
» 5.50 » 6.00 »
2.9. The minimum weight of a coil or piece of wire on a reel must correspond to that indicated in the table. .
Table 4
|
Weight of wire in a coil or on a reel, kg, not less |
||
|
without cover |
galvanized |
|
|
From 0.16 to 0.18 |
||
|
St. 0.20 » 0.56 |
||
Note: Uncoated wire coils with a weight 50% less than that indicated in the table are allowed. in an amount of no more than 10% of the mass of wire coils in a batch.
Wire coils weighing 500 - 1500 kg are allowed. Each skein should consist of one piece of wire.
(Changed edition, Amendment No. 3, 5).
3. ACCEPTANCE RULES
3.1. Wire is accepted in batches. The batch must consist of wire of the same diameter, the same manufacturing accuracy, one type of processing, one type of surface, one class and one group and must be documented in a quality document containing:
trademark or name and trademark of the manufacturer;
wire symbol;
results of tests performed;
net weight of the batch.
(Changed edition, Amendment No. 5).
3.2. Surface quality testing is carried out on each skein or reel. The size check is carried out on 5% of the skeins or spools from the batch, but not less than on three skeins or spools.
3.3. To check the mechanical properties of the wire and the quality of the coating, 3% of the coils or coils are selected from the batch, but not less than two coils or three coils.
3.4. If unsatisfactory test results are obtained for at least one of the indicators, repeated tests are carried out on a double sample.
The results of repeated tests apply to the entire batch.
3.2 - 3.4. (Changed edition, Amendment No. 3).
4. TEST METHODS
4.1a. For each type of test, one sample is taken from each selected coil or coil of wire.
(Introduced additionally, Amendment No. 4).
4.1. External inspection of the wire is carried out visually.
If there is a disagreement in quality assessment, the defect on the surface of the wire is removed by stripping and its depth is determined by comparative measurement of the diameter in protected and unprotected places. It is possible to determine the depth of defects using any type of microscope.
(Changed edition, Amendment No. 2, 5).
Sample length per determination
From 0.20 to 1.50
St. 1.50 to 3.00
4.5. Wire coiling testing is carried out according to GOST 10447.
4.6. The surface density of zinc wire is determined by the gravimetric or volumetric gasometric method, and the uniformity and continuity of the zinc coating is determined by the immersion method.
The weight method is used for particularly precise determinations and arbitration analyses.
The length of wire samples used to determine the mass of zinc coating by gravimetric or volumetric gasometric method is indicated in table. .
Samples may be cut into an arbitrary number of sections depending on the test conditions.
Removal of the zinc coating is carried out by completely immersing wire samples in the solution at ambient temperature until gas evolution stops.
A coil (coil) of wire is evaluated based on the arithmetic average of the test results of at least two samples. The test is carried out separately for each sample in the following order:
a) samples of wire are taken and the length specified for testing is measured. Samples are taken at least 0.5 m apart from each other;
b) degrease wire samples in alcohol, benzene or gasoline and wipe with a clean cloth;
c) dissolve the zinc coating, completely capturing the hydrogen released;
d) measure the volume of hydrogen released for each sample, sum it up and bring the arithmetic average to normal conditions (pressure 760 mm Hg, temperature 0 °C);
e) calculate the average surface density of zinc per 1 m2 of wire surface (m) in grams, according to the formula
Where V- arithmetic mean value of the volume of hydrogen under normal conditions, cm 3;
d- nominal diameter of the wire sample, mm;
l- sample length, mm.
Zinc is bled off in an aqueous solution of a mixture of acids:
sulfur according to GOST 4204 - 100 g/dm 3;
The continuity and uniformity of the zinc coating is controlled by immersing a sample of galvanized wire in a solution of copper sulfate, prepared by dissolving one part by weight of dry crystalline copper sulfate according to GOST 4165 in five parts by weight of distilled water and neutralized with an excess of freshly precipitated copper oxide hydrate. After neutralization, the solution must be filtered. The density of the neutralized filtered solution should be 1.114 - 1.116 g/cm3.
The temperature of the copper sulfate solution during the test should be (18 ± 2) °C.
The test procedure is as follows:
a) samples of wire 150 mm long are taken and washed with alcohol, gasoline or benzene. If the samples are washed with gasoline or benzene, then they are additionally washed with distilled water and wiped until moisture is removed;
b) immerse the samples in a solution of copper sulfate to a depth of at least 100 mm. The samples must be immersed for exactly 1 min. If a dive is set to 30 s, then it should be carried out after dives of 1 min. After each immersion in the solution, the samples are immediately rinsed with distilled water and wiped with a clean cloth. The number of samples simultaneously immersed in the solution should not exceed 6.
Wire samples should be in a solution of copper sulfate in a stationary state, without contacting each other or the walls of the vessel.
The number of wire samples to be tested in the same 200 ml solution of copper sulfate is given below.
Wire diameter, mm Number of samples, pcs.
From 0.20 to 0.50................................................. ..... 100
St. 0.50 » 1.00.................................... ........ 40
» 1.00 » 1.40................................................. ....... 20
» 1.40 » 2.00............................................. ....... 12
» 2.00 » 3.60............................................. ....... 6
» 3.60 » 6.00.................................... ....... 4
If, after a specified number of immersions in the solution, there are areas on the surface of the wire sample covered with copper that does not come off when wiping the sample with cotton wool or a clean cloth, then the sample is considered to have failed the test. Samples are viewed with the naked eye.
Samples are considered to have passed the test when:
a) reddening of the surface of the test wire sample in a section located at a distance of 10 mm from the level of the solution and at a distance of 20 mm from the lower end of the sample immersed in the solution;
b) a brown tint and reddening of a dotted nature, disappearing or not increasing in size and brightness with additional immersion of the sample in a solution of copper sulfate for 1 - 2 s.
(Changed edition, Amendment No. 3).
5. PACKAGING, LABELING, TRANSPORTATION AND STORAGE
5.1. Each skein must be firmly tied with heat-treated wire in at least three places evenly spaced around the circumference of the skein.
The ends of the wire in the coil should be neatly laid and easily found.
Skeins of wire with a diameter of less than 0.8 mm can be tied with the free end of the same skein.
The upper end of the piece of wire on the reel should be secured with a loop or on the cheek of the reel.
(Changed edition, Amendment No. 5).
5.2. Coils of wire from the same batch can be tied into coils.
(Changed edition, Amendment No. 1).
5.3. The wire is not coated with lubricant. At the consumer's request, the wire must be coated with a thin layer of preservative oil type NG-203 grades A, B according to OST 38.01436, K17 according to GOST 10877 , ZhKB and ZhKB-1 according to regulatory and technical documentation or industrial oil grades I-12A, I-20A, I-25A, I-30A, I-40A, I-50A according GOST 20799 with the addition of KP additives GOST 23639 (15 - 20%) or AKOR-1 (15 - 25%) according to GOST 15171.
It is allowed to use other types of preservative oils that protect the wire from corrosion.
5.4. Rolls of wire with a diameter of 0.50 mm or less should be wrapped in a layer of paper and packed in wooden boxes such as II according to GOST 18617, type II-I according to GOST 16536 or other regulatory and technical documentation.
Rolls of wire with a diameter of 0.5 - 1.00 mm should be wrapped in a layer of paper, then in a layer of polymer film or non-woven materials, or chemical fiber fabric.
It is allowed to pack the wire in metal box pallets in accordance with OST 14-43 or other regulatory and technical documentation or two-ton wooden boxes in accordance with GOST 18617, lined with packaging paper on the inside.
When mechanized packaging, a coil of wire must be wrapped in a layer of paper in accordance with GOST 10396 or KMV-170 paper, or other crepe paper with equivalent protective properties, or polymer film with the packaging secured.
The following are used as packaging materials:
waxed paper in accordance with GOST 9569 (the use of two-layer paper in accordance with GOST 8828 or other paper that provides corrosion protection is allowed);
polymer film according to GOST 10354, GOST 16272 or other polymer film;
non-woven materials (packaged canvas stitched fabric or glued fabric), fabrics made from chemical fibers according to regulatory and technical documentation, packaging fabric for technical purposes according to
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INTERSTATE STANDARD
STEEL WIRE
LOW CARBON TOTAL
DESTINATIONS
TECHNICAL CONDITIONS
Date of introduction 07/01/75
This standard applies to round low-carbon steel wire intended for nailing, lashing, fencing and other purposes.
1. TYPES AND MAIN DIMENSIONS
1.1. The wire is produced:
by type of processing:
heat treated - O;
thermally untreated;
by surface type:
without cover;
coated.
Heat-treated uncoated wire is produced light-colored (C), and by agreement between the consumer and the manufacturer, black (B) wire can be produced.
Coated wire is divided into:
galvanized 1st class - 1C,
galvanized 2nd class - 2C;
by manufacturing accuracy:
increased - P,
normal;
by temporary tensile strength (only for thermally untreated wire):
Group I - I,
Group II - II.
(Changed edition, Amendment No. 5).
1.2. The wire is made with a diameter of:
from 0.16 to 10.00 mm - without coating;
from 0.20 to 6.00 mm - coated.
The diameter of the wire and the maximum deviations along it must correspond to those indicated in the table. 1.
Table 1
|
Nominal wire diameter |
Nominal wire diameter |
Maximum deviation for wire diameter |
|||
|
increased accuracy |
normal accuracy |
increased accuracy |
normal accuracy |
||
Note. It is allowed to produce wire with two-sided maximum deviations. The tolerance field must correspond to that indicated in the table. 1.
(Changed edition, Amendment No. 5).
1.3. The ovality of the wire should not exceed half of the maximum deviations in diameter.
1.4. (Deleted, Change No. 5).
Examples of symbols
Wire with a diameter of 1.2 mm, heat-treated, high precision, light:
Wire 1 ,2 -P-ABOUT-WITH GOST 3282 -74
The same, with a diameter of 1.0 mm, heat-treated, normal accuracy, black:
Wire 1 ,0 -ABOUT-H GOST 3282 -74
The same, with a diameter of 1.2 mm, thermally untreated, class 2, increased accuracy, group II:
Wire 1 ,2 -P-2C-II GOST 3282 -74 .
(Changed edition, Amendment No. 5, Amendment).
2. TECHNICAL REQUIREMENTS
2.1. The wire must be manufactured in accordance with the requirements of this standard according to technological regulations approved in the prescribed manner, from class II wire rod according to OST-14-15-193 or other regulatory and technical documentation. It is allowed to manufacture wire from low-carbon steel grades in accordance with GOST 1050 and wire rod.
2.2. The mechanical properties of the wire must correspond to those indicated in the table. 2. At the request of the consumer, heat-treated wire is manufactured with a regulated relative elongation.
2.3. Thermally untreated wire with a diameter of 0.50 - 6.00 mm must withstand at least four bends without destruction.
(Changed edition, Amendment No. 1).
table 2
|
Wire diameter, mm |
Tensile strength, N/mm 2 (kgf/mm 2), for wire |
Relative elongation d 100,%, not less, for heat-treated wire |
||||
|
thermally untreated |
heat treated |
|||||
|
without cover |
coated |
without cover |
coated |
|||
|
From 0.16 to 0.45 incl. |
||||||
|
St. 0.45 "1.00" |
||||||
|
» 1.00 » 1.20 » |
||||||
|
» 1.20 » 2.50 » |
||||||
|
» 2.50 » 3.20 » |
||||||
|
» 3.20 » 3.60 » |
||||||
|
» 3.60 » 4.50 » |
||||||
|
» 4.50 » 6.00 » |
||||||
|
» 6.00 » 7.50 » |
||||||
|
St. 8.00 to 10.00 |
||||||
2.4. The surface of the uncoated wire should be free of cracks, film, dullness and scale (with the exception of heat-treated black wire).
Local rippling, dents, marks, scratches are allowed on the surface of the wire, the depth of which should not be more than a quarter of the maximum deviation of the wire of normal accuracy.
(Changed edition, Amendment No. 5).
2.5. There should be no black spots on the surface of the galvanized wire that are not coated with zinc. Individual influxes of zinc are allowed, the value of which should not be more than half the maximum deviation from the actual diameter of the wire.
Inhomogeneity of the wire in color, white spots and shine, white coating are allowed if the wire passes the coating quality test in accordance with the requirements of paragraphs. 2.6, 2.7.
2.6. The zinc coating must be durable and must not crack or peel when the wire is spirally wound onto a cylindrical core with a diameter equal to that indicated in the table. 2a.
Table 2a
Superficial dusty peeling of the zinc coating on wound samples of galvanized wire is allowed.
(Changed edition, Amendment No. 5).
2.7. The surface density of zinc, the number of dives and the duration of each dive must comply with the requirements of Table. 3.
(Changed edition, Amendment No. 1, 5).
2.8. The wire must be produced in coils or on spools. Winding of wire should be done in correct rows without interchanging the turns and ensure free winding of the wire from the spools and skeins.
The coil of wire should consist of one piece of wire. No more than three pieces of wire are allowed on reels.
(Changed edition, Amendment No. 3, 5).
Table 3
|
Wire diameter, mm |
Number of dives |
Surface density of zinc, g/m 2, not less |
Number of dives |
Duration of each dive, s |
||
|
Wire 1st class |
Wire 2nd class |
|||||
|
From 0.20 to 0.32 incl. |
||||||
|
St. 0.32 "0.40" |
||||||
|
» 0.40 » 0.50 » |
||||||
|
» 0.50 » 0.63 » |
||||||
|
» 0.63 » 0.80 » |
||||||
|
St. 0.85 to 1.00 incl. |
||||||
|
» 1.00 » 1.20 » |
||||||
|
» 1.20 » 1.60 » |
||||||
|
» 1.60 » 2.00 » |
||||||
|
St. 2.80 to 3.60 incl. |
||||||
|
» 3.60 » 5.50 » |
||||||
|
» 5.50 » 6.00 » |
||||||
2.9. The minimum weight of a coil or piece of wire on a reel must correspond to that indicated in the table. 4.
Table 4
Note. Uncoated wire coils with a weight 50% less than that indicated in the table are allowed. 4 in an amount of no more than 10% of the mass of wire coils in a batch.
Wire coils weighing 500 - 1500 kg are allowed. Each skein should consist of one piece of wire.
(Changed edition, Amendment No. 3, 5).
3. ACCEPTANCE RULES
3.1. Wire is accepted in batches. The batch must consist of wire of the same diameter, the same manufacturing accuracy, one type of processing, one type of surface, one class and one group and must be documented in a quality document containing:
trademark or name and trademark of the manufacturer;
wire symbol;
results of tests performed;
net weight of the batch.
(Changed edition, Amendment No. 5).
3.2. Surface quality testing is carried out on each skein or reel. The size check is carried out on 5% of the skeins or spools from the batch, but not less than on three skeins or spools.
3.3. To check the mechanical properties of the wire and the quality of the coating, 3% of the coils or coils are selected from the batch, but not less than two coils or three coils.
3.4. If unsatisfactory test results are obtained for at least one of the indicators, repeated tests are carried out on a double sample.
The results of repeated tests apply to the entire batch.
3.2 - 3.4. (Changed edition, Amendment No. 3).
4. TEST METHODS
4.1a. For each type of test, one sample is taken from each selected coil or coil of wire.
(Introduced additionally, Amendment No. 4).
4.1. External inspection of the wire is carried out visually.
If there is a disagreement in quality assessment, the defect on the surface of the wire is removed by stripping and its depth is determined by comparative measurement of the diameter in protected and unprotected places. It is possible to determine the depth of defects using any type of microscope.
(Changed edition, Amendment No. 2, 5).
4.2. The diameter and ovality of the wire are measured in two mutually perpendicular directions of the same section in at least three places of each coil or coil with a micrometer according to GOST 6507.
The diameter of galvanized wire is measured on a section of wire with a smooth surface without sagging.
(Changed edition, Amendment No. 5).
4.3. Testing the wire for tension and rupture with a knot is carried out according to GOST 10446.
4.4. Wire bend testing is carried out according to GOST 1579. The bend test for wires with a diameter of less than 0.50 mm is replaced by the knot tensile test. In this case, the breaking force should not be less than 50% of the breaking force of the same wire when testing it without a knot.
Table 5
4.5. Wire coiling testing is carried out according to GOST 10447.
4.6. The surface density of zinc wire is determined by the gravimetric or volumetric gasometric method, and the uniformity and continuity of the zinc coating is determined by the immersion method.
The weight method is used for particularly precise determinations and arbitration analyses.
The length of wire samples used to determine the mass of zinc coating by gravimetric or volumetric gasometric method is indicated in table. 5.
Samples may be cut into an arbitrary number of sections depending on the test conditions.
4.6.1. Volumetric gasometric method
Removal of the zinc coating is carried out by completely immersing wire samples in the solution at ambient temperature until gas evolution stops.
A coil (coil) of wire is evaluated based on the arithmetic average of the test results of at least two samples. The test is carried out separately for each sample in the following order:
a) samples of wire are taken and the length specified for testing is measured. Samples are taken at least 0.5 m apart from each other;
b) degrease wire samples in alcohol, benzene or gasoline and wipe with a clean cloth;
c) dissolve the zinc coating, completely capturing the hydrogen released;
d) measure the volume of hydrogen released for each sample, sum it up and bring the arithmetic average to normal conditions (pressure 760 mm Hg, temperature 0 °C);
e) calculate the average surface density of zinc per 1 m2 of wire surface ( m) in grams, according to the formula
Where V- arithmetic mean value of the volume of hydrogen under normal conditions, cm 3;
d- nominal diameter of the wire sample, mm;
l- sample length, mm.
Zinc is bled off in an aqueous solution of a mixture of acids:
It is allowed to use other types of preservative oils that protect the wire from corrosion.
5.4. Rolls of wire with a diameter of 0.50 mm or less must be wrapped in a layer of paper and packaged in wooden boxes type II according to GOST 18617, type II-I according to GOST 16536 or other regulatory and technical documentation.
Rolls of wire with a diameter of 0.5 - 1.00 mm should be wrapped in a layer of paper, then in a layer of polymer film or non-woven materials, or chemical fiber fabric.
It is allowed to pack the wire in metal box pallets in accordance with OST 14-43 or other regulatory and technical documentation or two-ton wooden boxes in accordance with GOST 18617, lined with packaging paper on the inside.
When mechanized packaging, a coil of wire must be wrapped in a layer of paper in accordance with GOST 10396 or KMV-170 paper, or other crepe paper with equivalent protective properties, or polymer film with the packaging secured.
The following are used as packaging materials:
waxed paper in accordance with GOST 9569 (the use of two-layer paper in accordance with GOST 8828 or other paper that provides corrosion protection is allowed);
polymer film
Steel wire is the simplest and most widely known metal product. The shape and method of its manufacture are simple, but... there are subtleties everywhere - and such seemingly simple hardware as steel wire also has its own characteristics, which are regulated by the relevant GOST. There is also a GOST for the most common type of steel wire - general purpose.
There is also a GOST for the most common type of steel wire - general purpose.
The diameter of this product can be very different - from tenths of a millimeter to several centimeters, but the most commonly used will still be rolled products with a thickness of 0.8 mm to 6 mm, made from steel grades 08kp, St10ps or St10 by cold drawing.
All these types of steel are low-carbon steels and are highly flexible.
The wire obtained from them belongs to the “general purpose” category and can be produced either with an additional coating or in its pure form.
Low-carbon wire is usually divided into two categories: heat-treated and heat-treated. Heat treatment reduces the elasticity of the wire and increases its bendability - therefore, nails can be made from this wire, and the wire itself can be made from heat-treated wire.
Heat-treated wire can be light (if it was calcined without access to oxygen) and black (if, as a result of interaction with atmospheric oxygen, it was covered with a layer of oxide - turned blue). Black wire is considered more resistant to corrosion, but it will be more difficult to coat it with another composition that prevents rusting - therefore consumers prefer to order wire with a light version - it can be coated with zinc, varnish, etc.
As for the use of such wire, one of the most common uses is to fasten reinforcement. Therefore, general-purpose steel wire is often also called “knitting” - suitable in its properties for tying reinforcement. General purpose wire produced in accordance with GOST 3282-74 is best suited for these tasks.
It is used in the manufacture of reinforcing reinforced concrete frames wherever the use of welding is not specifically specified - that is, in most reinforced concrete products. Any worker can easily be taught how to fasten reinforcement bars using it, and you can check the quality of his work simply by eye - whether there are wire bundles in the right places or not.
But the minimum requirements for the employee dictate rather high demands on the material.
Which ones exactly? GOST 3282-74 speaks about this.
Main indicators
First of all, it contains requirements for the mechanical characteristics of annealed wire. GOST stipulates that the relative elongation of heat-treated wire should be in the range of 15-20% for “bare” wire, or 12-18% (if the wire is coated).
GOST 3282-74 also divides wire into several types:
- in terms of production accuracy into normal and increased accuracy;
- by processing method - annealed and unannealed;
- by surface type - with and without special coatings;
- by tensile strength (for wire that has not undergone heat treatment) -on products first and second groups;
For thermally untreated wire, the main indicator will be tensile strength, which should have the following values:
To control these main indicators of the quality of knitting wire, GOST requires the acceptance of finished products, testing the mechanical characteristics of 3 percent of the coils or coils from each delivery batch.
The geometric parameters of the wire (thickness and cross-sectional shape) must be checked on 5% of the coils, and the surface quality (scratches, dents, and rips with a depth not exceeding 0.25 of the maximum permissible) must be checked in general in all packages.
If the test results for at least one of these parameters turn out to be unsatisfactory, then another series of tests is carried out - but this time using a sample doubled.
How else is wire checked according to GOST?
In addition, “bare” unburnt wire produced in accordance with GOST 3282-74 can be tested for a number of other indicators, namely:
- for winding ability
- for tear resistance
- for stretchability
- for resistance to repeated bending
Features of wire packaging
For wire whose quality meets the specified parameters, GOST determines the conditions of packaging and storage, of which the main requirements will be:
- long pieces of wire are wound into coils and tightly fixed;
- each coil should consist only of a single piece of wire;
- in a coil of wire, the ends should be positioned so that they can be easily detected;
- coils formed from wire are tied with at least 3 annealed wires;
Coils of wire of small sections must, in addition, be wrapped in paraffin-impregnated paper (if the cross-section is less than 0.5 mm) or polymer film (if the cross-section is from 0.5 to 1 mm.)
When storing wire of large diameters, GOST allows (at the customer's request) the use of anti-corrosion lubricating coatings based on technical oils I-50A, I-20A or ZhKB-1, NG-203.
Technical specifications for general purpose low-carbon steel wire in accordance with GOST 3282-74
Low-carbon steel wire for general purpose complies with GOST 3282-74. OK wire is supplied heat-treated (t/o) and thermally untreated (t/n) of normal and increased accuracy. OK wire is used for the manufacture of metal mesh, construction nails, for tying packages of pipes, boards and other packaged materials during transportation, loading and storage, as well as for fencing and other purposes. OK wire is supplied in coils and coils weighing up to 1.0 tons.
1. Raw materials for making wire serves as a wire rod from carbon steel ordinary quality according to DSTU 2770-94 (GOST 30136-95). The wire is made thermally untreated, uncoated, in a cold state, of normal accuracy.
2. Wire diameter and maximum dimensional deviations:
2.2 The mechanical properties of the wire must correspond to those indicated in the table. At the consumer's request, heat-treated wire is manufactured with a regulated relative elongation.
| Wire diameter, mm | Tensile strength, N/mm2 | Relative extension, %. not less, for heat-treated wire |
||||
|---|---|---|---|---|---|---|
| thermally untreated | heat treated | |||||
| Group I | Group II | without cover | coated | without cover | coated | |
| from 0.16 to 0.45 incl. | 690-1370 (70-140) |
690-1370 (70-140) |
290-490 (30-50) |
340-540 (35-55) |
15 | 12 |
| St 0.45 >> 1.00 >> | 690-1270 (70-130) |
690-1180 (70-120) |
||||
| >>1,00 >> 1,20 >> | 590-1270 (60-130) |
690-1180 (70-120) |
||||
| >>1,20 >> 2,50 >> | 590-1180 (60-120) |
690-980 (70-100) |
||||
| >>2,50 >> 3,20 >> | 540-1080 (55-110) |
640-930 (65-95) |
20 | 18 | ||
| >>3,20 >> 3,60 >> | 440-930 (45-95) |
|||||
| >>3,60 >> 4,50 >> | 590-880 (60-90) |
|||||
| >>4,50 >> 6,00 >> | 390-830 (40-85) |
490-780 (50-80) |
||||
| >>6,00 >> 7,50 >> | - | |||||
| 8,00 | 390-780 (40-80) |
|||||
| Sat 8.00 to 10.00 | 440-690 (45-70) |
|||||
Wire weight GOST 3282-74
GOST 3282-74 Low-carbon steel wire for general purpose
Rice. Wire cross section
This table uses the following notations:
d - wire diameter;
. the sign means that this wire diameter is provided for by GOST 3282-74
| Nominal Wire diameter, d, mm | Weight 1000 m, kg | GOST | Nominal Wire diameter, d, mm | Weight 1000 m, kg | GOST | |
|---|---|---|---|---|---|---|
| 0,8 | 3,9458 | . | 3 | 55,488 | . | |
| 1 | 6,1654 | . | 3,2 | 63,133 | . | |
| 1,1 | 7,4601 | . | 3,5 | 75,526 | . | |
| 1,2 | 8,8781 | . | 3,6 | 79,903 | . | |
| 1,3 | 10,419 | . | 4 | 98,646 | . | |
| 1,4 | 12,084 | . | 4,5 | 124,85 | . | |
| 1,6 | 15,783 | . | 5 | 154,13 | . | |
| 1,8 | 19,976 | 5,5 | 186,50 | . | ||
| 2 | 24,662 | . | 5,6 | 193,35 | . | |
| 2,2 | 29,840 | . | 6 | 221,95 | . | |
| 2,5 | 38,534 | . | 6,3 | 244,70 | . | |
| 2,8 | 48,337 | . | 7 | 302,10 | . |
Note: The theoretical mass of 1000 m of wire is calculated based on the nominal dimensions at a steel density of 7850 kg/m and is a reference value.
STEEL WIRE
LOW CARBON
GENERAL PURPOSE
TECHNICAL CONDITIONS
GOST 3282-74
USSR STATE COMMITTEE FOR MANAGEMENT
PRODUCT QUALITY AND STANDARDS
STATE STANDARD OF THE USSR UNION
Date of introduction from 01.07.75
This standard applies to round low-carbon steel wire intended for nailing, lashing, fencing and other purposes.
1. TYPES AND MAIN DIMENSIONS
1.1. The wire is produced:
by type of processing:
heat treated - O;
thermally untreated;
by surface type:
without cover;
coated.
Heat-treated uncoated wire is produced light-colored (C), and by agreement between the consumer and the manufacturer, black (B) wire can be produced.
Coated wire is divided into:
galvanized 1st class - 1C,
galvanized 2nd class - 2C;
by manufacturing accuracy:
increased - P,
normal;
by temporary tensile strength (only for thermally untreated wire):
Group I - I,
Group II - II.
(Changed edition, Amendment No. 5).
1.2. The wire is made with a diameter of:
from 0.16 to 10.00 mm - without coating;
from 0.20 to 6.00 mm - coated.
The diameter of the wire and the maximum deviations along it must correspond to those indicated in the table. 1.
Table 1
|
Nominal wire diameter |
Maximum deviations for wire diameter |
|||||
|
increased accuracy |
normal accuracy |
increased accuracy |
normal accuracy |
|||
|
0,16 |
1,10 |
0,06 |
||||
|
0,18 |
1,20 |
|||||
|
0,02 |
0,02 |
0,05 |
||||
|
0,20 |
1,30 |
|||||
|
0,22 |
1,40 |
|||||
|
0,25 |
1,60 |
0,10 |
||||
|
0,28 |
1,80 |
|||||
|
0,30 |
2,00 |
0,06 |
||||
|
0,32 |
0,03 |
|||||
|
0,35 |
||||||
|
0,36 |
0,03 |
0,12 |
||||
|
0,37 |
3,00 |
|||||
|
3,20 |
||||||
|
0,40 |
3,50 |
|||||
|
0,45 |
3,60 |
0,10 |
||||
|
0,50 |
0,04 |
4,00 |
||||
|
0,55 |
4,50 |
0,16 |
||||
|
0,56 |
5,00 |
|||||
|
0,60 |
5,50 |
|||||
|
5,60 |
||||||
|
0,04 |
6,00 |
|||||
|
0,63 |
6,30 |
|||||
|
0,70 |
7,00 |
|||||
|
0,80 |
8,00 |
|||||
|
0,90 |
0,05 |
9,00 |
0,10 |
0,20 |
||
|
0,95 |
10,00 |
|||||
|
1,00 |
||||||
Note . It is allowed to produce wire with two-sided maximum deviations. After approval, it must correspond to what is indicated in the table. 1.
(Changed edition, Amendment No. 5).
1.3. The ovality of the wire should not exceed half of the maximum deviations in diameter.
1.4. (Deleted, Amendment No. 5).
Examples of symbols
Wire with a diameter of 1.2 mm, heat-treated, high precision, light:
Wire 1.2-P-O-S GOST 3282-74
The same, with a diameter of 1.0 mm, heat-treated, normal accuracy, black:
Wire 1.0-О-Ч GOST 3282-74
The same, with a diameter of 1.2 mm, thermally untreated, class 2, increased accuracy, group II:
Wire 1.2-P-2C-II GOST 3282-74.
(Changed edition, Amendment No. 5).
2. TECHNICAL REQUIREMENTS
2.1. The wire must be manufactured in accordance with the requirements of this standard according to technological regulations approved in the prescribed manner, from class II wire rod according to OST-14-15-193-86 or other regulatory and technical documentation. It is allowed to produce wire from low-carbon steel grades in accordance with GOST 1050-74* and wire rod in accordance with GOST 4231-70.
* From 01.01.91 GOST 1050-88 comes into force.
2.2. The mechanical properties of the wire must correspond to those indicated in the table. 2. At the request of the consumer, heat-treated wire is manufactured with a regulated relative elongation.
table 2
|
Wire diameter, mm |
Temporary tensile strength, N/mm 2 |
Relative elongation, %, not less, for heat-treated wire |
||||
|
thermally untreated |
thermally |
|||||
|
Group I |
Group II |
without cover |
coated |
without cover |
coated |
|
|
From 0.16 to 0.45 incl. |
690-1370 |
690-1370 |
||||
|
(70-140) |
(70-140) |
|||||
|
St. 0.45 to 1.00 incl. |
690-1270 |
690-1180 |
||||
|
(70-130) |
(70-120) |
|||||
|
St. 1.00 to 1.20 incl. |
590-1270 |
690-1180 |
||||
|
(60-130) |
(70-120) |
|||||
|
St. 1.20 to 2.50 incl. |
590-1180 |
690-980 |
||||
|
(60-120) |
(70-100) |
290-490 |
340-540 |
|||
|
St. 2.50 to 3.20 incl. |
540-1080 |
640-930 |
(30-50) |
(35-55) |
||
|
(55-110) |
(65-95) |
|||||
|
St. 3.20 to 3.60 incl. |
440-930 |
640-930 |
||||
|
(45-95) |
(65-95) |
|||||
|
St. 3.60 to 4.50 incl. |
440-930 |
590-880 |
||||
|
(45-95) |
(60-90) |
|||||
|
St. 4.50 to 6.00 incl. |
390-830 |
490-780 |
||||
|
(40-85) |
(50-80) |
|||||
|
St. 6.00 to 7.50 incl. |
390-830 |
490-780 |
||||
|
(40-85) |
(50-80) |
|||||
|
8,00 |
390-780 |
490-780 |
||||
|
(40-80) |
(50-80) |
|||||
|
St. 8.00 to 10.00 |
390-690 |
440-690 |
||||
|
(40-70) |
(45-70) |
|||||
2.3. Thermally untreated wire with a diameter of 0.50 - 6.00 mm must withstand at least four bends without destruction.
(Changed edition, Amendment No. 1).
2.4. The surface of the uncoated wire should be free of cracks, film, dullness and scale (with the exception of heat-treated black wire).
Local rippling, dents, marks, scratches are allowed on the surface of the wire, the depth of which should not be more than a quarter of the maximum deviation of the wire from normal accuracy.
(Changed edition, Amendment No. 5).
2.5. There should be no black spots on the surface of the galvanized wire that are not coated with zinc. Individual influxes of zinc are allowed, the value of which should not be more than half the maximum deviation from the actual diameter of the wire.
Inhomogeneity of the wire in color, white spots and shine, white coating are allowed if the wire passes the coating quality test in accordance with the requirements of paragraphs. 2.6, 2.7.
2.6. The zinc coating must be durable and must not crack or peel when the wire is spirally wound onto a cylindrical core with a diameter equal to that indicated in the table. 2a.
Table 2a
|
Wire diameter, mm |
Ratio of core diameter to wire diameter |
Number of turns |
|
|
1st class |
2nd class |
||
|
From 0.20 to 1.60 incl. |
|||
|
St. 1.60 to 2.50 incl. |
|||
|
St. 2.50 to 6.00 incl. |
|||
Superficial dusty peeling of the zinc coating on wound samples of galvanized wire is allowed.
(Changed edition, Amendment No. 5).
2.7. The surface density of zinc, the number of dives and the duration of each dive must comply with the requirements of Table. 3.
Table 3
|
Wire diameter, mm |
Over- |
Number of dives |
Duration |
Over- |
Number of dives |
Continue |
|
Wire 1st class |
Wire 2nd class |
|||||
|
From 0.20 to 0.32 incl. |
||||||
|
St. 0.32 to 0.40 incl. |
||||||
|
St. 0.40 to 0.50 incl. |
||||||
|
St. 0.50 to 0.63 incl. |
||||||
|
St. 0.63 to 0.80 incl. |
||||||
|
0,85 |
||||||
|
St. 0.85 to 1.00 incl. |
||||||
|
St. 1.00 to 1.20 incl. |
||||||
|
St. 1.20 to 1.60 incl. |
||||||
|
St. 1.60 to 2.00 incl. |
||||||
|
2,20 |
||||||
|
2,50 |
||||||
|
2,80 |
||||||
|
St. 2.80 to 3.60 incl. |
||||||
|
St. 3.60 to 5.50 incl. |
||||||
|
St. 5.50 to 6.00 incl. |
||||||
(Changed edition, Amendment No. 1, 5).
2.8. The wire must be produced in coils or on spools. Winding of wire should be done in correct rows without interchanging the turns and ensure free winding of the wire from the spools and skeins.
The coil of wire should consist of one piece of wire. No more than three pieces of wire are allowed on reels.
(Changed edition, Amendment No. 3, 5).
2.9. The minimum weight of a coil or piece of wire on a reel must correspond to that indicated in the table. 4.
Table 4
|
Wire diameter, mm |
Weight of wire in a coil or on a reel, kg, |
|
|
without cover |
galvanized |
|
|
From 0.16 to 0.18 |
||
|
St. 0.20 to 0.56 |
||
|
St. 0.60 to 1.00 |
||
|
St. 1.10 to 2.00 |
||
|
St. 2.20 to 3.60 |
||
|
St. 4.00 to 6.00 |
10,0 |
|
|
St. 6.30 to 10.00 |
||
Note. Uncoated wire coils with a weight 50% less than that indicated in the table are allowed. 4 in an amount of no more than 10% of the mass of wire coils in a batch.
Wire coils weighing 500 - 1500 kg are allowed. Each skein should consist of one piece of wire.
(Changed edition, Amendment No. 3, 5).
3. ACCEPTANCE RULES
3.1. Wire is accepted in batches. The batch must consist of wire of the same diameter, the same manufacturing accuracy, one type of processing, one type of surface, one class and one group and must be documented in a quality document containing:
wire symbol;
results of tests performed;
net weight of the batch.
(Changed edition, Amendment No. 5).
3.2. Surface quality testing is carried out on each skein or reel. The size check is carried out on 5% of the skeins or spools from the batch, but not less than on three skeins or spools.
3.3. To check the mechanical properties of the wire and the quality of the coating, 3% of the coils or coils are selected from the batch, but not less than two coils or three coils.
3.4. If unsatisfactory test results are obtained for at least one of the indicators, repeated tests are carried out on a double sample.
The results of repeated tests apply to the entire batch.
3.2 - 3.4. (Changed edition, Amendment No. 3).
4. TEST METHODS
4.1a. For each type of test, one sample is taken from each selected coil or coil of wire.
(Introduced additionally, Amendment No. 4).)
4.1. External inspection of the wire is carried out visually.
If there is a disagreement in quality assessment, the defect on the surface of the wire is removed by stripping and its depth is determined by comparative measurement of the diameter in protected and unprotected places. It is possible to determine the depth of defects using any type of microscope.
(Changed edition, Amendment No. 2, 5).
4.2. The diameter and ovality of the wire are measured in two mutually perpendicular directions of the same section in at least three places of each coil or coil with a micrometer according to GOST 6507-78.
The diameter of galvanized wire is measured on a section of wire with a smooth surface without sagging.
(Changed edition, Amendment No. 5).
4.3. Testing the wire for tension and rupture with a knot is carried out according to GOST 10446-80.
4.4. The bend test of the wire is carried out according to GOST 1579-80. The bend test for wires with a diameter of less than 0.50 mm is replaced by the knot tensile test. In this case, the breaking force should not be less than 50% of the breaking force of the same wire when testing it without a knot.
4.5. Wire coiling testing is carried out according to GOST 10447-80.
4.6. The surface density of zinc wire is determined by the gravimetric or volumetric gasometric method, and the uniformity and continuity of the zinc coating is determined by the immersion method.
The weight method is used for particularly precise determinations and arbitration analyses.
The length of wire samples used to determine the mass of zinc coating by gravimetric or volumetric gasometric method is indicated in table. 5.
Table 5
Samples may be cut into an arbitrary number of sections depending on the test conditions.
The weight of the cargo item (package) should not exceed 1500 kg. At the request of the consumer, the weight of the cargo package should not exceed 80 kg.
(Changed edition, Amendment No. 5).
5.6. Each reel, skein or coil must have a label firmly attached to it indicating:
trademark or name and trademark of the manufacturer;
symbol;
technical control mark.
(Changed edition, Amendment No. 3, 5).
5.7. (Deleted, Amendment No. 3).
5.8. Wire is transported by all types of transport in accordance with the rules for the carriage of goods in force for this type of transport.
When transported by covered transport, the weight of the cargo package should not exceed 1250 kg. Placing and securing cargo in vehicles transported by railway, must correspond technical specifications loading and securing of cargo, approved by the Ministry of Railways. Transportation by rail - by carload, low-tonnage or small shipments.
It is allowed to transport wire in universal containers in accordance with GOST 15102-75, GOST 20435-75, GOST 22225-76.
(Changed edition, Amendment No. 5).
5.9. Transport marking - according to GOST 14192-77.
5.8, 5.9. (Introduced additionally, Amendment No. 3).
5.10. The wire must be stored according to the conditions of 5 GOST 15150-69.
(Changed edition, Amendment No. 4).
INFORMATION DATA
1. DEVELOPED AND INTRODUCED Ministry of Ferrous Metallurgy of the USSR
DEVELOPERS
Kh. N. Belalov, Ph.D. tech. sciences, A. G. Rogovsky, T. K. Bezinskaya
2. APPROVED AND PUT INTO EFFECT Resolution of the State Committee of Standards of the Council of Ministers of the USSR dated January 17, 1974 No. 144
3. INSTEAD GOST 3282-46
4. REFERENCE REGULATIVE AND TECHNICAL DOCUMENTS
|
GOST 15171-78 |
||||
|
GOST 4165-78 |
4.6.3 |
GOST 15846-79 |
||
|
GOST 4204-77 |
4.6.1 |
GOST 16272-79 |
||
|
GOST 4231-70 |
GOST 16536-84 |
|||
|
GOST 5530-81 |
OST 38.01436-88 |
5. REISSUE(DECEMBER 1989) with Amendments No. 1, 2, 3, 4, 5, approved in May 1977, November 1978, December 1983, June 1984, September 1988 (IUS 7-77, 1-79, 4-84, 9-84, 1-89).