GOST 14637-89

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  ГОСТ 14637-89

GOST 14637−89 (ISO 4995−78) rolled plate from carbon steel of ordinary quality. Specifications (with Change No. 1)

GOST 14637−89
(ISO 4995−78)
Band Q23

INTERSTATE STANDARD

ROLLED PLATE FROM CARBON STEEL OF ORDINARY QUALITY

Specifications

Rolled plate from carbon steel of general quality. Specifications

ISS 77.140.50

OKP 09 7100

Date of introduction 1991−01−01

INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the Ministry of metallurgy of the USSR

2. APPROVED AND put INTO EFFECT by Decision of the USSR State Committee on management of quality and standards from 22.12.89 N 4023

3. INSTEAD 14637−79 GOST, GOST 380−71 in regard to plate hire

4. The standard corresponds to the international standard ISO 4995 in terms of products with thickness up to 6 mm incl.

5. REFERENCE NORMATIVE AND TECHNICAL DOCUMENTS

The designation of the reference document referenced	The item number, app
GOST 380−2005	1.1, 2.1.1
GOST 1497−84	4.3
GOST 7268−82	4.5
GOST 7564−97	4.2
GOST 7565−81	3.3, 4.1
GOST 7566−94	2.2, 2.3, 3.1, 3.2, 3.9, 5.1
GOST 9454−78	4.4
GOST 14019−2003	4.6
GOST 14192−96	2.2.1
GOST 15846−2002	2.3.1
GOST 17745−90	4.1
GOST 19903−74	1.3, 2.1.21, 4.11, Annex
GOST 22536.0−87	4.1
GOST 22536.1−88	4.1
GOST 22536.2−87	4.1
GOST 22536.3−88	4.1
GOST 22536.4−88	4.1
GOST 22536.5−87	4.1
GOST 22536.6−88	4.1
GOST 22536.7−88	4.1
GOST 22536.8−87	4.1
GOST 22536.9−88	4.1
GOST 22536.10−88	4.1
GOST 22536.11−87	4.1
GOST 22727−88	2.1.24, 4.9
GOST 26663−85	5.1
GOST 26877−91	4.11
GOST 27809−95	4.1

6. Limitation of actions taken by Protocol No. 5−94 of the Interstate Council for standardization, Metrology and certification (ICS 11−12−94)

7. EDITION (Sept 2009) with amendment No. 1, approved in December 1990 (IUS 5−91), Amendment (ICS 12−2004)

This standard applies to plate hot-rolled carbon steel of ordinary quality, manufactured width of 500 mm and a thickness of 4 to 160 mm inclusive.

1. THE MAIN PARAMETERS

1.1. Rentals are made in the form of sheets and rolls of steel grades St0, St2kp, St2ps, St2sp, St3kp, St3ps, st3sp, St3gps, St3gsp, St4ps, St4sp, St5ps, St5sp, St5gps according to GOST 380.

1.2. Depending on the standardized characteristics of the rental is divided into categories: 1, 2, 3, 4, 5, 6.

To denote the category to the designation of the brand add the category number, for example: Ст3пс1, Ст4сп3.

The category of rental, the consumer specifies in the order. If you have not specified the category selects the manufacturer.

1.3. Rental produce thick:

4−160 mm — leaves;

4−12 mm — rolls.

In part requirements for the range rental, you should correspond to GOST 19903.

1.4. Examples of symbols are given in Appendix.

2. TECHNICAL REQUIREMENTS

2.1. Features

2.1.1. Rolled manufactured steel with a chemical composition corresponding to GOST 380.

Maximum deviations in chemical composition in a ready to rent from plotnogo analysis of bucket samples shall not exceed the permissible GOST 380.

2.1.2. For products with thickness up to 10 mm incl. of steel grades St3kp, St3ps, st3sp allowed to decrease the lower limit of the mass fraction of one of the elements — carbon, 0.04% abs., manganese — 0.1% abs. while ensuring the mechanical properties established for the specified steel grades.

At the customer’s request mass fraction of acid aluminium in the rental category 2 with thickness up to 5 mm from steel grade st3sp, aluminium killed, should be less than 0.02%.

Mass fraction of silicon in the rental categories 2−6 thickness up to 8 mm incl., manufactured from steel grades St3ps St2ps and, do not contain residual silicon deoxidizers allowed less than 0.05% in compliance with the other standards and requirements for rental.

(Changed edition, Rev. N 1).

2.1.3. At the customer’s request mass fraction of sulfur in the rental categories 1−5 of steel of all grades, in addition to the St0, shall not exceed 0,040% phosphorus — 0.030% is; rentals category 6 mass fraction of each of these elements should not exceed 0,025%.

2.1.4. Rentals intended for welded structures, the mass fraction of carbon should not exceed 0,22% (SV).

(Amendment).

2.1.5. The categories of rentals depending on the normalized characteristics are presented in table.1.

Table 1

Kate- goriya	Normalized feature								Steel grade
Chemistry- cal composition	Mechanical properties tensile and bending to the parallel sides	Toughness
KCU				KCV
at a temperature of, °C			after fur- technical aging	when temperature, °C
plus 20	minus 20	minus 40	0	plus 20
1	-	+	-	-	-	-	-	-	St0, St2kp, St2ps, St2sp, St3kp, St3ps, St3sp, St5ps, St5sp, St5gps
2	+	+	-	-	-	-	-	-	St2kp, St2ps, St2sp, St3kp, St3ps, St3sp, St5ps, St5sp, St5gps
3	+	+	+	-	-	-	-	-	St3kp, St3ps, St3sp, St3gps, St3gsp, St4ps, St4sp
4	+	+	-	+	-	-	-	-	St3ps, St3sp, St3gps, St3gsp
5	+	+	-	+	-	+	-	+	St3ps, St3sp, St3gps, St3gsp
6	+	+	-	-	+	+	+	-	St3ps, St3sp, St3gps, St3gsp
Notes: 1. The «+" sign means that the feature is normalized, the sign «— «is not normalized. 2. For rental of steel grade St0 yield strength and toughness are not standardized. 3. Rental categories 2 and 3 from steel grades St3ps st3sp and thickness of 5 mm or more, in addition to rentals intended for redistribution on the pipe, are made by agreement between manufacturer and consumer. 4. For hire category 5, intended for redistribution on the pipe, normalized KCU at a temperature of minus 20 °C and one of the other two toughness: KCU after ageing mechanical or KCV at a temperature of 20 °C.

2.1.6. Rental categories 1−5 are made in hot-rolled condition, category 6 — hardened state.

To ensure the required properties rental of all categories can apply heat treatment.

It is possible to produce rental categories 1−5 hardened with rolling heating or after controlled rolling.

2.1.7. Mechanical properties of hot-rolled steel during the tensile test and bending shall comply with the standards given in table.2.

Table 2

Steel grade	Temporary resistance , N/mm(kgf/mm)	Yield strength , N/mm(kgf/mm), for thicknesses in mm					Elongation , %, for thicknesses in mm					Bending to parallel sides (thickness of the sample,  — the mandrel diameter) for thicknesses in mm
up to 20		St. 20 to 40	St. 40 to 100	over 100	up to 20	St. 20 up to 40		over 40		up to 20	St. 20
not less than
St0	Not less than 300 (31)	-	-		-	-	23		22		20	=2,5	=3,5
St2kp	320−410 (33−42)	215 (22)	205 (21)		195 (20)	185 (19)	33		32		30	=1,5	=2,5
St2ps, St2sp	330−430 (34−44)	225 (23)	215 (22)		205 (21)	195 (20)	32		31		29
St3kp	360−460 (37−47)	235 (24)	225 (23)		215 (22)	195 (20)	27		26		24
St3ps, St3sp	370−480 (38−49)	245 (25)	235 (24)		225 (23)	205 (21)	26		25		23
St3gps	370−490 (38−50)
St3gsp	390−570 (40−58)	255 (26)	245 (25)		-	-	23		24		-
St4ps, St4sp	410−530 (42−54)	265 (27)	255 (26)		245 (25)	235 (24)	24		23		21	=2,5	=3,5
St5ps, St5sp	490−630 (50−64)	285 (29)	275 (28)		265 (27)	255 (26)	20		19		17	=3,5	=4,5
St5gps	450−590 (46−60)

2.1.7.1. Allowed to exceed the upper limit of the temporary resistance not more than 50 N/mm(5 kgf/mm) in comparison with given in table.2 subject to the other provisions, and in coordination with the consumer — without restriction of the upper limit.

2.1.7.2. In coordination with the consumer the value of the yield strength of rolled of a thickness exceeding 20 mm is permitted for 10 N/mm(1 kgf/mm) lower than shown in table.2.

2.1.7.3. Permitted reduction of the elongation at 1% abs. for products with thickness more than 8 mm for every millimeter of thickness reduction for products with thickness of 8 mm or less.

2.1.8. Rules KCU impact toughness of hot-rolled steel category 3−5 shall comply with given in table.3.

Table 3

Steel grade	The thickness of rolling, mm	The impact strength KCU, j/cm (kgf·m/cm )
at a temperature of, °C		after mechanical aging
plus 20	minus 20
not less than
St3ps, St3sp	5−9	78 (8)	39 (4)	39 (4)
10−25	69 (7)	29 (3)	29 (3)
26−40	49 (5)	-	-
St3gps	5−9	78 (8)	39 (4)	39 (4)
10−30	69 (7)	29 (3)	29 (3)
31−40	49 (5)	-	-
St3gsp	5−9	78 (8)	39 (4)	39 (4)
10−30	69 (7)	29 (3)	29 (3)
31−40	49 (5)
St4ps, St4sp	5−9	78 (8)	-	-
10−25	59 (6)
26−40	39 (4)
Note. By agreement between the consumer and the manufacturer the norms of toughness set for the thickness of 4−9 mm, appropriate values for the thickness of 5−9 mm.

2.1.9. The mechanical properties of the strengthened rolled when testing for tensile, bending to parallel sides and norms of toughness KCU shall be as given in table.4.

Table 4

The thickness of rolling, mm	Temporary resistance , N/mm (kgf/mm)	Yield strength , N/mm(kgf/mm)	Elongation , %	The impact strength KCU, J/cm (kgf·m/cm)		Bending to parallel ness of the parties ( — thickness,  — diameter mandrel)
not less than			at a temperature of minus 40 °C	after mechanical aging
Up to 20	430 (44)	295 (30)	16	39 (4)	29 (3)	=4
21−40	=5
Note. For rental of category 1 and 2 toughness is not normalized.

2.1.5 to 2.1.9. (Changed edition, Rev. N 1).

2.1.10. Standards impact toughness KCV rental categories 5 and 6 shall be as given in table.5.

Table 5

Category	The thickness of rolling, mm	Impact toughness KCV, j/cm(kgf·m/cm), at temperature, °C
plus 20	0
5	5−20	34 (3,5)	-
SV. 20	-
6	8−9	-	34 (3,5)
10−20	30 (3,1)
SV. 20	-
Note. Rules of the toughness of the products with thickness more than 20 mm is set 01.01.94. The determination of the values of the manufacturer spends on each of the 20 th party for statistical purposes.

2.1.11. Rolled steel St3kp category 3 are made by agreement between manufacturer and consumer, the norms of toughness at + 20 °C according to table take.3 for steel grades St3ps st3sp and.

2.1.12. On the surface of the rental should be no flaws, rips, rolled, and burnt crusts, and blisters-blisters, bunching, cracks, captivity, pollution and katanoi scale. Permitted defects (rabiza, risks, and other local defects), if it does not take rent for the size limit.

2.1.13. The elimination of surface defects of rolled all thicknesses are manufactured at the plate mills produce a sweep. Allowed cleared plots rolled of a thickness exceeding 10 mm to brew.

Cleaning produce abrasive tools or methods that do not cause changes in properties rental.

At the request of the consumer, the welding defects are not allowed.

2.1.14. When removing the surface defects of rolled Stripping allowed thickness reduction of not more than 5% of the nominal excess negative maximum deviations, but not more than 3 mm, the area of the individual stripped portion of the surface rental should not be more than 100 cm, the total area of all denuded areas on one sheet — no more than 2% of its area.

2.1.15. When coincidence Stripping on both sides of the rentals allowable depth of Stripping is determined as the sum of the depths of sweeps on each side of the Bicycle which does not exceed the limit deviation on thickness.

2.1.16. The surface denuded of the site not intended for welding shall not have sharp edges.

2.1.17. At the customer’s request to sweep the defects to a depth bringing the thickness of the rolled for the limits is not allowed.

2.1.18. The depth of Stripping for welding products with thickness up to 120 mm should not exceed 25% of the actual thickness of the hire of large thickness is not more than 30 mm.

2.1.19. The weld area should cover the clearing of not less than 5 mm on the contour and after Stripping the output of the thickness of rolled over the size limit.

The area of each welded portion of a surface rental should not be more than 25 cm, the total area on a single sheet — not more than 1% of its area.

2.1.20. On the cut edges of the rent should be no delamination, cracks, and flaws, as well as deducing for limits on width and length:

— wooloowin and stress crack with a depth of more than 2 mm and a length of more than 25 mm;

— notches deeper than 2 mm for products with thickness up to 20 mm and 3 mm. thick.

On the edges of the rent should not be a Burr height of more than 2 mm.

2.1.21. Crushing and bending the edges after pruning should take a rental for the maximum deviations from flatness according to GOST 19903.

2.1.22. On the crimped edges should be free of delaminations, flaws, cracks, bubbles-bubbles, captivity, pollution, katanoi scale, wooloowin and scratches, which eliminates the rent for the size limits on width.

2.1.23. The depth of the defects on the uncircumcised the edge of the sheet or roll shall not exceed half of the maximum deviations in width and not show the width of the rental for a nominal amount.

2.1.24. Rules of the continuity sheets in accordance with the classes 01, 2 and 3 according to GOST 22727.

Control the marginal ice zone is carried out at the request of the consumer.

2.1.25. At the request of the consumer surface rental must be free of scale and oiled with neutral oil or other suitable preservative material.

2.1.26. Rent rolls should not have:

is curved more than 90° of lateral edges;

— twisted and crumpled ends;

all partial widths according to the length exceeding the width.

At the request of the consumer the ends of the partial widths should be cut off.

2.1.27. Manufacturer of composite rolls for the manufacture of pipes, including welded parts, is not allowed.

2.2. Marking rolled — GOST 7566 with the following addition.

When the marking is applied to a conventional number of steel grades (without the letters St).

Color marking of hire, with the exception of category 6 in accordance with GOST 380, category 6 — red with yellow.

2.2.1. Transport marking under GOST 14192.

2.3. Packaging rolled — GOST 7566.

2.3.1. Packaging rolled to the far North and equated localities — according to GOST 15846.

3. ACCEPTANCE

3.1. Acceptance of rental — according to GOST 7566 with the following additions.

Rental take parties. Party rental, made of slabs, obtained on machines continuous casting, should consist of the rental of one grade of steel of the same thickness, one mode or the thermal hardening treatment; the party rolled from ingots, in addition, from one melting-ladle.

The size of the batch of rolled slabs, obtained on machines continuous casting method «melting in the melting» should not exceed 350 tons, and slabs obtained by separate batches, mass — melting.

Party rentals, except rental of steel grade St0, should consist of sheets and rolls one melting.

For rental of steel grade St0 number of heats in the party limit.

(Changed edition, Rev. No. 1 Amendment).

3.2. Each batch is accompanied by a quality document according to GOST 7566 with the additional indication:

— categories: rolling;

— the type and mode of treatment — thermal or hardening (when);

— accuracy-rolled — thickness, flatness, camber;

— character of the edges;

— surface quality, including the presence of patches of surface defects by welding;

— results of non-destructive testing;

— test results on impact bending of specimens with a hub form V.

3.3. To check the chemical composition of finished steel sample size: according to GOST 7565.

3.4. Control of the chemical composition of finished steel from the manufacturer is allowed not to perform while ensuring established standards, according to the analysis of bucket samples.

3.5. The volume of the sample to check the quality at PP.2.1.7−2.1.11 should match the table.6.

Table 6

The rental	The sample size rentals
hot-rolled and hardened (except heat treated)	heat-treated
Sheet	Two sheets	One sheet (from the middle of the cages)
Roll	One roll
Note. For sheets, get a sharp roll, select a single sheet.

3.6. Allowed by agreement between manufacturer and consumer from the manufacturer the determination of impact strength on samples with the hub of the V periodically at every 20-th party.

3.7. The surface quality control is carried out on all sheets and rolls of the party.

To control the size taken away from the party 10%, but not less than 5 PCs of sheets, rolls at least 2 PCs.

3.8. By agreement between manufacturer and consumer conduct testing of the rental. Monitoring is carried out on all sheets of the party, or selectively. The sample inspection sample size — 10% of the tiles, but not less than 5 pieces.

Continuity of products in coils and sheets obtained by cutting the coil, not control.

3.9. If unsatisfactory validation results at least one indicator that re-test is carried out on a sample selected in accordance with GOST 7566.

If unsatisfactory results during periodic tests, they are transferred to acceptance to produce positive results in the three games in a row.

The results of repeated tests spread to the entire party.

If unsatisfactory test results in selective ultrasonic testing the manufacturer carries out tests on each sheet of the party.

4. TEST METHODS

4.1. To check the chemical composition of the samples are taken according to GOST 7565.

Chemical analysis carried out according to GOST 22536.0 to GOST 22536.11, GOST 27809, GOST 17745или other methods providing the required accuracy of the analysis.

If there are differences in used methods established by this standard.

4.2. To carry out mechanical and technological tests from the unit of hire (PP.3.5 and 3.6) take samples according to GOST 7564:

-one sample for tensile testing;

— three samples for testing the impact strength to the hub of the U;

— three samples for testing the impact strength to the hub of the V;

— one sample for bend test.

Samples for testing sheets and rolls except samples for testing the impact strength of types 11 and 13, cut across the direction of rolling, samples for testing the impact strength of types 11 and 13 along the direction of rolling.

In the manufacture of samples for testing the impact strength on one of the faces of the sample, the surface rolling, leave raw.

4.3. Tensile tests carried out according to GOST 1497.

4.4. Drop test bending is carried out according to GOST 9454.

For rental with a thickness of 4−9 mm for specimens of type 3 or 13 with a thickness of 10 mm — type I or type II. For products with thickness 4−10 mm, manufactured with a deviation of minus tolerance, toughness is determined on samples with a thickness equal to the thickness of the rental.

4.5. Drop test bending after mechanical aging is carried out according to GOST 7268.

4.6. The bend test is carried out according to GOST 14019.

4.7. When the test rolled on impact strength are not permitted a decrease in the value of impact strength on the same sample more than 30%, and the average value must be below established standards.

4.8. Allowed to use non-destructive, including statistical methods, control of hire, while ensuring the accuracy and reliability of not lower than achieved by methods specified in this standard.

The differences in the assessment of quality of hire and periodic testing apply control methods stipulated by this standard.

(Changed edition, Rev. N 1).

4.9. Testing of sheets according to GOST 22727.

Scan (continuous or discontinuous linear) is set by the manufacturer.

The depth of the marginal ice zone under the control of the maximum allowable length of discontinuities shall be not less than 50 mm.

4.10. The surface quality of the rolled controlled visually without the use of magnifying devices. Stratification is controlled by the inspection of the edges.

4.11. To control the linear dimensions of the rental use versatile or special measuring instruments and tools.

Special measuring instruments — gauges and templates — must be certified in the prescribed manner.

The accuracy of the used measuring instruments must reproduce the dimensions and limit deviations of hire, established by GOST 19903, and in measuring defects in this standard.

Deviations of the shape of rent control according to GOST 26877.

5. TRANSPORTATION AND STORAGE

5.1. Transportation and storage should meet the requirements of GOST 7566 with the following addition.

When shipping more than two packages to one user should enlarge the cargo space in accordance with the requirements of GOST 26663.

APP (mandatory). EXAMPLES OF SYMBOLS ROLLED

APP
Mandatory

Diagram legend

Note. The parameters and characteristics of the rental shown in the diagram, if they are not specified in the order, established by the manufacturer and the designation is not given.


Examples of symbols:

Sheet high accuracy (A), particularly high flatness (FOR), with cut edge (On), size 8х1500х12000 mm according to GOST 19903−74, from steel grade st3sp, category 3 according to GOST 14637−89:

Same for rental, designed for welded structures (SV):

Sheet normal accuracy (B), improved flatness (PU), with crimped edge (K), size 26х1000х8000 mm according to GOST 19903−74, from steel grade st3sp, category 4 according to GOST 14637−89:

The coil of high precision (A) and uncircumcised lips (BUT), size 10х1500 churchyard 19903−74 mm, of steel grade St3ps, category 3 according to GOST 14637−89:

APP. (Changed edition, Rev. No. 1 Amendment).