GOST R 55374-2012

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  ГОСТ Р 55374-2012

GOST R 55374−2012 rolled steel structural alloy for bridge building. General specifications

GOST R 55374−2012

Group В32
B33

NATIONAL STANDARD OF THE RUSSIAN FEDERATION

ROLLED STEEL STRUCTURAL ALLOY FOR BRIDGE BUILDING

General specifications

Alloyed structural rolled steel for bridge building. General specifications

ISS 77.140.50
77.140.60
OKP 09 5040
09 8141
09 8151

Date of introduction 2013−10−01

Preface

1 DEVELOPED by the Federal state unitary enterprise «Central research Institute of ferrous metallurgy them. I. P. Bardin» (FSUE «tsniichermet im. I. P. Bardina»), Open joint stock company «Scientific research Institute of transport construction» (JSC «crid»)

2 SUBMITTED by the Technical Committee for standardization TC 375 «steel Products from ferrous metals and alloys"

3 APPROVED AND put INTO EFFECT by the Federal Agency for technical regulation and Metrology dated December 27, 2012 No. 2066-St

4 INTRODUCED FOR THE FIRST TIME


Application rules of this standard are established in GOST R 1.0−2012 (section 8). Information about the changes to this standard is published in the annual (as of January 1 of the current year) reference index «National standards» and the official text changes and amendments — in monthly information index «National standards». In case of revision (replacement) or cancellation of this standard a notification will be published in the upcoming issue of the monthly information index «National standards». Relevant information, notification and lyrics are also posted in the information system of General use — on the official website of the Federal Agency for technical regulation and Metrology on the Internet (gost.ru)

1 Scope

This standard applies to hot rolled plate, universal broadband, shaped, and rolled sections of structural alloy steel, intended for the manufacture of steel structures, rail, road, combined, urban and pedestrian bridges, operating in climatic zones, corresponding to the conventional Northern execution, and in areas with an estimated seismicity up to 9 points inclusive.

This standard does not cover mechanisms of drawbridges.

As part of the rules of the chemical composition and mechanical properties this standard also applies to:

— cold-formed shaped profiles, made from steel plates;

— thick plates of steel grade 09G2SD, intended for the manufacture of the base layer of two-layer rolling.

2 Normative references

This standard uses the regulatory references to the following standards:

GOST R 50424−92 Steel and cast iron. Method of determination of calcium

GOST R 53845−2010 (ISO 377:1997) rolled steel. General rules of sample, blanks collection for mechanical and technological tests

GOST R 54153−2010 Steel. Method of atomic-emission spectral analysis

GOST 82−70 hot-rolled steel universal broadband. Assortment

GOST 103−2006 bars, steel, hot-rolled strip. Assortment

GOST 535−2005 the bar and shaped sections of quality carbon steel. General specifications

GOST 1497−84 (ISO 6892−84) Metals. Test methods tensile

GOST 2590−2006 bars, steel, hot rolled round. Assortment

GOST 2591−2006 bars, steel, hot-rolled square. Assortment

GOST 2879−2006 bars, steel hot rolled hexagon. Assortment

GOST 7268−82 Steel. The method of determining the propensity to mechanical aging test the impact strength

GOST 7564−97 hire. General rules of sample, blanks collection for mechanical and technological tests

GOST 7565−81 (ISO 377−2-89) Iron, steel and alloys. Sampling method for determination of chemical composition

GOST 7566−94 metal Products. Acceptance, marking, packing, transportation and storage

GOST 8239−89 hot-rolled steel I-Beams. Assortment

GOST 8240−97 Channels hot-rolled steel. Assortment

The Angles GOST 8509−93 hot-rolled steel angle. Assortment

GOST 8510−86 angle steel hot rolled angle. Assortment

GOST 9454−78 Metals. Test method for impact strength at low, room and elevated temperatures

GOST 10243−75 Steel. Test methods and evaluation of the macrostructure

GOST 12359−99 (ISO 4945−77) Steels carbon, alloyed and high alloy. Methods for determination of nitrogen

GOST 14019−2003 (ISO 7438:1985) Metals. Method of bend test

GOST 14192−96 Marking of cargo

GOST 18895−97 Steel. Method of photoelectric spectral analysis

GOST 19903−74 hot-rolled steel sheets. Assortment

GOST 21120−75 Bars and billets round and rectangular section. Methods of ultrasonic flaw detection.

GOST 22235−2010 freight Wagons main Railways of 1520 mm. General requirements for ensuring safety during loading-unloading and shunting works

GOST 22536.0−87 carbon Steel and unalloyed cast iron. General requirements for methods of analysis

GOST 22536.1−88 carbon Steel and unalloyed cast iron. Methods for determination of total carbon and graphite

GOST 22536.2−87 carbon Steel and unalloyed cast iron. Methods of determining sulphur

GOST 22536.3−88 carbon Steel and unalloyed cast iron. Methods for determination of phosphorus

GOST 22536.4−88 carbon Steel and unalloyed cast iron. Methods for determination of silicon

GOST 22536.5−87 carbon Steel and unalloyed cast iron. Methods for determination of manganese

GOST 22536.6−88 carbon Steel and unalloyed cast iron. Methods for determination of arsenic

GOST 22536.7−88 carbon Steel and unalloyed cast iron. Methods for determination of chromium

GOST 22536.8−87 carbon Steel and unalloyed cast iron. Methods for determination of copper

GOST 22536.9−88 carbon Steel and unalloyed cast iron. Methods for determination of Nickel

GOST 22536.10−88 carbon Steel and unalloyed cast iron. Methods for determination of aluminium

GOST 22536.11−87 carbon Steel and unalloyed cast iron. Methods for determination of titanium

GOST 22536.12−88 carbon Steel and unalloyed cast iron. Methods for determination of vanadium

GOST 22536.14−88 carbon Steel and unalloyed cast iron. Method for the determination of zirconium

GOST 22727−88 the rolled sheet. Methods of ultrasonic testing

GOST 26020−83 I-Beams steel hot rolled with parallel flanges. Assortment

GOST 26877−2008 metal Products. Methods of measuring form deviations of

GOST 27809−95 Cast iron and steel. Methods for spectrographic analysis

GOST 28473−90 Iron, steel, ferroalloys, chromium and manganese metal. General requirements for methods of analysis

GOST 28870−90 Steel. Methods tensile tests of rolled plates in the thickness direction

GOST 30456−97 metal Products. The rolled sheet and steel pipe. Methods of test for impact strength

Note — When using this standard appropriate to test the effect of reference standards in the information system of General use — on the official website of the Federal Agency for technical regulation and Metrology on the Internet or in the annual information index «National standards» published as on January 1 of the current year, and the editions of the monthly information index «National standards» for the current year. If replaced with a reference standard, which was given an undated reference, then it is recommended to use the current version of this standard, taking into account all enabled in this version modifications. If replaced with a reference standard, which is given a dated reference, it is recommended to use the version of this standard referred to above by year of approval (acceptance). If after approval of this standard in the reference standard, which is given a dated reference, a change affecting a provision to which reference, the provision is recommended to be applied without taking into account this change. If the reference standard is cancelled without replacement, the position in which reference is made to him, recommended to be used in part not affecting this link.

3 Terms and definitions

This standard applies the following terms with respective definitions:

3.1 hot-rolled: hot-Rolled flat product of rectangular section with a thickness of 4 mm and a width of not less than 600 mm.

3.2 rental universal broadband: hot Rolled flat products without cut edges with a thickness of 6 mm, a width from 200 mm to 1050 mm inclusively, supplied in sheets, rolled from four sides or rectangle caliber.

3.3 the bars: hot Rolled products in which the tangent to any point on the contour of the cross section this cross-section intersects. The cross-section remains the same along the entire length of the product:

— round — cross-section in the form of a circle with a diameter of 5 mm;

— square — cross-section with a side of a square of 6 mm;

— hexagonal — cross-section in the form of a hexagon inscribed circle diameter of 8 mm;

— strip — rectangular cross section with a thickness of 4 mm, a width of 200 mm, laminated on all four sides.

3.4 rolled shapes: hot Rolled products in which a tangent at least one point of the contour of the cross section the cross section intersects. The cross section resembles a Latin letter: L (area), U (channel), I and H (I-beam).

3.5 allowed the use of the following terms:

— plate, universal broadband rental — sheets;

— varietal (except the strip) steel — bars and rods;

— long strip rolled strip;

— shapes — profiles.

4 Classification and assortment

4.1 the rent is divided:

— types:

— plate,

— universal broadband,

— varietal,

— shaped;

— strength grade: С325, S345, S390;

— for delivery depending on availability and type of heat treatment and test conditions on the impact strength: 1, 2, 3.

4.2 strength grades and steel grades, depending on the type of steel shall be as given in table 1.


Table 1

Strength class	Steel grade	The rental
		plate, universal broadband, bandpass varietal	bright bars (round, square, hexagonal)	shaped
С325	09G2SD	+	+	+
S345	15KHSND 14ХГНДЦ	+	-	+
S390	10KHSND	+	-	+
Note — the Sign «-" means that a bike of this strength don’t deliver.

4.3 Condensed assortment of rolled plate, universal broadband, shaped, and given in Appendix A.

By agreement between manufacturer and customer is allowed to produce rolled plate, universal broadband, shaped, and other sizes.

4.3.1 long products supply diameter, a side of a square, the inscribed circle diameter and strip thickness up to 50 mm inclusive.

By agreement between manufacturer and customer is allowed to produce bars with a diameter, a side of a square, the inscribed circle diameter and thickness of bands of other sizes.

4.4 For the cross-sectional shape, dimensions and limit deviations of the hire must meet the requirements:

— plate — GOST 19903 for high (MF) and very high (ON) flatness, with cut edges (O). By agreement between manufacturer and customer is allowed to produce plates with normal flatness (MON), edging (rolled) edge (BUT);

— universal broadband — GOST 82 Rebrovo curvature for class A, and the agreement between manufacturer and customer — class B;

— varietal:

— round GOST 2590,

— square — GOST 2591,

— hex — GOST 2879,

— strip — GOST 103;

— shaped:

— angle — GOST 8509,

— angle — GOST 8510,

— u, GOST 8240,

— I-beam — GOST 8239,

— I-beams with parallel flange edges, GOST 26020 [1].

5 Technical requirements

5.1 rental are made in accordance with the requirements of this standard in accordance with technical documentation approved in the established order.

5.2 Chemical composition

5.2.1 Bicycle is made from steel grades 09G2SD, 10KHSND, 15KHSND and 14ХГНДЦ.

5.2.2 Chemical composition of steel by ladle sample analysis must conform to the standards specified in table 2.


Table 2 — Chemical composition of steel by ladle sample analysis

Steel grade	Mass fraction of elements, %
	carbon	manganese	silicon	chrome	Nickel	copper	Zirconia	sulfur	phosphorus
								No more
09G2SD	Not more than 0.12	1,30−1,70	0,50−0,80	Not more than 0.30	Not more than 0.30	0,15−0,30	-	0,010	0,015
10KHSND	Not more than 0.12	0,50−0,80	0,80−1,10	0,60−0,90	0,50−0,80	0,40−0,60	-	0,010	0,015
15KHSND	0,12−0,18	0,40−0,70	0,40−0,70	0,60−0,90	0,30−0,60	0,20−0,40	-	0,010	0,015
14ХГНДЦ	0,10−0,18	0,70−1,10	0,20−0,40	0,80−1,10	0,50−0,80	0,40−0,70	0,003−0,010	0,010	0,015
Notes 1 Steel of all grades should be fully deoxidized. 2 Mass fraction of aluminum in steel of all grades shall be 0,020%-0,050%. 3 is allowed to enter in the steel all grades of titanium as a technological additive in an amount of 0.005%-0,035%. 4 allow for the processing of steel with calcium-containing materials is based on the mass fraction of calcium in steel less than 0.005%. 5 In steel 10KHSND for rent category 3 mass fraction of silicon should be 0.70% to 1.00%. 6 In the ready to rent category 3 from 15KHSND steel grade mass fraction of carbon should be no more than 0.18%. The lower value of the mass fraction of carbon is not a rejection sign be provided to ensure mechanical properties.

5.2.2.1 Mass fraction of arsenic and nitrogen in the steel should not exceed %:

— arsenic — 0,08;

— nitrogen — 0,008.

5.2.3 In ready rental, provided that the mechanical properties and other requirements of this standard allowed variations in chemical composition from the rules given in table 2. Maximum deviations are given in table 3.


Table 3 — maximum deviations in chemical composition in the finished rolled

The name of the element	Limit deviation, %
Carbon	±0,02
Manganese	±0,10
Silicon	±0,05
Chrome	±0,05
Nickel	±0,05
Copper	±0,05
Aluminium	+0,005
Sulfur	+0,005
Phosphorus	+0,005
Nitrogen	+0,004

5.3 rental produce with assurance of weldability. Weldability is ensured by the fabrication technology and meet all requirements to chemical composition, taking into account permissible deviations in the finished rolled products.

Carbon equivalent of steel for rental all classes of strength — not more than 0.47 percent. The results of the control to 01.01.2016 are not a sign of rejection, they are entered into the document of quality.

5.4 Categories of supply of hire depending on availability and type of heat treatment and test conditions on impact strength is shown in table 4.


Table 4

Supply category	The availability and type of heat treatment of rolled products		Impact test bend
	plate, universal broadband, bandpass varietal	varietal (except the strip) and shaped	in the delivery condition					after mechanical aging
			KCU			KCV		KCU
			When testing temperature, °C
			-40	-60	-70	-20	-40	+20	-20
1	-	Hot rolled, without heat treatment	+	-	-	-	-	+	-
2	Normalization	-	-	+	-	+	-	+	-
3	Thermal improvement (quenching + high holidays)	-	-	-	+	-	+	-	+
Notes 1 the Sign «-" means that the car with the test don’t deliver. 2 is allowed in order to ensure the required mechanical properties for plate, universal broadband and long products bars categories: supply 2 for thermal improvement (quenching + high holidays). 3 allowed by agreement between manufacturer and customer, delivery of rolled category 3 not intended for use on bridge structures in the normalized condition.

Category of delivery must be specified in the order and in the document of quality. Category delivery of high-quality (except the strip) and structural shapes in the legend are not specified.

5.5 Mechanical properties of the rolled products should conform to:

— during the tensile test norms given in table 5;

— when testing the impact strength to the standards specified in table 6.


Table 5 — Mechanical properties of the rolled products in the tensile test

Strength class	Steel grade	Nominal thickness of rolled , mm	Mechanical properties
			Yield strength , N/mm, not less	Tensile strength, N/mm	Elongation , %, not less
С325	09G2SD	4−50	325	450−615	21
S345	15KHSND, 14ХГНДЦ	8−50	345	490−685	21
S390	10KHSND	8−50	390	530−685	19

Table 6 — Mechanical properties the rental Desk at test for impact strength

Strength class	Steel grade	Nominal thickness of rolled , mm	Impact strength, j/cm, not less
			in the delivery condition					after mechanical aging
			KSI			КСV		KSI
			for categories			for categories		for categories
			1	2	3	2	3	1 and 2	3
			When testing temperature, °C
			-40	-60	-70	-20	-40	+20	-20
С325	09G2SD	4−50	39	29	29	39	29	29	29
S345	15KHSND, 14ХГНДЦ	8−50	39	29	29	39	29	29	29
S390	10KHSND	8−50	39	29	29	39	29	29	29
Notes 1 Testing the impact strength on specimens with a sharp notch (КСV) conduct for hire with a thickness of 10 mm or more. 2 When the test rolled on impact bending of the samples of a type 3 according to GOST 9454 impact toughness should be 10 j/cmis shown above in table 6.

5.5.1 For rental of all strength classes with a thickness more than 50 mm the mechanical properties of the norms set by agreement between the manufacturer and the customer.

5.6 rolled plate, universal broadband, and rolled strip with a thickness of 10 mm or more steel of all grades experience:

— bend wide sample to parallel sides at room temperature on the mandrel diameter:

for rental of category 1;

for rental categories 2 and 3

where is the diameter of the mandrel, mm;

 — nominal thickness of rolled.

On the edges of the specimens during bending shall not be tears or cracks;

— fracture notched specimens with a thickness equal to the thickness of the rental.

The macrostructure distribution in the fracture should not be visible to the naked eye defects: residues shrinkage, podnasadochnogo of rychlosti, cracks and gas bubbles.

Fracture notched specimens should have a fibrous structure structure on the area not less than 50%.

The fracture allowed the individual volosovichi and bundles with a length of 10 mm; the total length of wooloowin and delamination in the fracture may be no more than 20 mm.

The results of the tests broadband a universal and long steel bars bending wide samples and fracture determined the area of the fibrous structure of the structure to 01.01.2016 are not a sign of rejection, they are entered into the document of quality.

5.7 Plate, universal broadband and high-quality strip products with thickness 20 mm or more steel of all grades tested on the tension in the thickness direction of hire. Mechanical properties in the tensile test in the thickness direction of hire must conform to the standards specified in table 7.


Table 7

Strength class	Steel grade	Mechanical properties in the tensile test in the direction of the rolled thickness (z — direction), not less
		Tensile strength , N/mm	The relative narrowing ,%
С325	09G2SD	225	35
S345	15KHSND, 14ХГНДЦ	245	35
S390	10KHSND	265	35

The results of the tests to 01.01.2016 are not a sign of rejection, they are entered into the document of quality.

5.8 On the surface of the wide faces (except the surface of the rolled edges) of the plate and universal broadband rental should be no flaws, rips, rolled, and burnt crust, and bubbles-bubbles, accordions, cracks, prisoner, rolled dirt and katanoi scale.

The elimination of surface defects is carried out with a sweep. Formed during cleaning of the recess should have smooth transitions. The cleaning is carried out with an abrasive tool or methods that do not cause changes in properties rental.

The stripped surface should not have scratches visible to the naked eye. On the border of the Stripping zone should be free of ledges.

The square separately cleaned surface rental should not be more than 100 cm, thickness reduction of the rental after cleaning should not exceed 5% of the nominal thickness over the negative maximum deviations, but not more than 3 mm. While the total area of all denuded areas on the same sheet should not exceed 2% of its area. The total area of the stripped surface, including the aforementioned Stripping and Stripping, the depth of which does not exceed the sum of limit deviations for thickness should not exceed 20% of the leaf area.

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

Permitted without the removal of local (area not exceeding 100 cm) defects (rabiza, risk, fingerprints), a total area of not exceeding 10% of the leaf area and its depth (height) is not outputting to rent for the size limit on thickness.

5.9 On the cut side and end edges of the rolled plates and the ends of universal broadband and long steel bars should be free of delaminations, cracks, flaws, burrs height of more than 2 mm.

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

5.10 On the rolled edges of the plate, universal broadband and rolled strip and the edges of structural shapes should not be delamination, flaws, cracks, bubbles-bubbles, captivity, pollution, katanoi scale, wooloowin and scratches, which eliminates the rent for the minimum dimensions in thickness.

5.10.1 the depth of the defects on the rolled edges of the plate and universal broadband rental should not exceed half of the limit deviations on width and display hire for a nominal size width.

5.11 Quality of surface and ends of shapes and rolled sections shall conform to the requirements of GOST 535.

5.12 Welding and sealing of defects on the surface and edges of the plate, universal broadband, bandpass and shaped rolled section rolled is not permitted.

5.13 Plate, universal broadband and high-quality bandpass hire are subjected to ultrasonic inspection (UT). The norm of continuity shall be class 1 or 2 according to GOST 22727. The class of the continuity of (UT-1, UT-2) indicate in the order. Control is performed over the entire surface.

In the absence of in the order specify the class of the continuity it chooses the manufacturer.

5.13.1 manufacturer In agreement with the customer long products (round, square) subjected to testing a method of ultrasonic testing. The rental must match the quality group 2 according to GOST 21120.

5.14 the Scheme and examples of symbols in accordance with Annex B.

6 acceptance Rules

6.1 General rules of acceptance of rental — according to GOST 7566.

6.2 the hire show to the acceptance of the parties. The party must consist of one rolled steel grades, one melting (melting-ladle), one strength, one category of delivery, of the same size in diameter, thickness, or one gage sections, one mode of heat treatment.

6.3 the Weight of the batch shall not exceed:

— for hire category 1 — weight bottoms of the bucket;

for rental categories 2 and 3 — 72 tons (carload norms), and according to customer’s requirement is 25 tons.

6.4 To check the quality of the party rentals select:

— for chemical analysis — samples according to GOST 7565;

— for quality control of surfaces, edges and ends of all sheets, strip, rods, and profiles;

— to control the size and shape — 10% sheets, strips, rods and profiles, but at least five pieces;

for testing of steel plate — all of the leaves. Net testing broadband universal and long products (round, square and flat) determined by agreement between manufacturer and customer, and specify in the order;

— for tensile tests and impact bending two sheet, rod, profile and stripe;

for bend test a wide sample, and fracture determination of the area of the fibrous structure of the structure — two sheets, two bands;

for tensile tests in the thickness direction of rolled two sheets, two lanes. The test is performed on every tenth batch of current production to plate, universal broadband, and long steel bars.

6.4.1 Upon the customer’s request to rent control on each sheet, each varietal zone.

6.5 Sampling for tests of mechanical and technological properties (tensile, impact bending, wide samples and fracture) is carried out according to GOST 7564 or GOST R 53845, for testing the mechanical tensile properties in thickness direction of rolled according to GOST 28870.

Samples for testing the fracture is cut from the middle third of the width of the plate, universal broadband, and long steel bars.

6.6 If unsatisfactory test results of at least one of the indicators of re-examination is carried out in accordance with GOST 7566.

6.7 Each party rental is accompanied by a quality document, designed according to GOST 7566, which additionally indicates if the requirement is established:

— the category of the rental;

— the value of carbon equivalent ;

— the type and mode of heat treatment;

the results of the test of continuity with method of ultrasonic testing;

— test results on impact bending of specimens with round and sharp notch;

the results of tensile tests in the thickness direction of the rental;

— the results of the tests of fracture, and determination of the area of the fibrous structure of the structure.

7 test Methods

7.1 the Chemical analysis were carried out according to GOST 12359, GOST 18895, GOST 22536.0 to GOST 22536.12, 22536.14 GOST, GOST 27809, 28473 GOST, GOST R 50424, GOST R 54153 or by other methods of measurement, certified in the prescribed manner and ensure the necessary accuracy of the analysis. Mass fraction of calcium in steel is determined.

If there are differences in the methods used by the standards given in the first paragraph.

7.1.1 Carbon equivalent of the steel is determined by the formula

, (1)

where , , , ,  — mass fraction of carbon, manganese, chromium, Nickel and copper in steel by ladle sample analysis.

7.2 the Quality of rolled product surface is controlled visually without the use of magnifying devices.

7.3 the Absence of delaminations in plate rent control inspection of the cut edges and ends without the use of magnifying devices or using measuring instruments IPG (for testing falling weight). In visual detection of delamination from the edges rolled off the chips. Split shavings is a sign of the presence of stratification.

Allowed no bundles to control the customer after cutting, welding, straightening and other technological operations.

Bars and shapes to the lack of delamination is controlled by the inspection ends without the use of magnifying devices.

7.4 control the size hold the measuring instrument corresponding accuracy.

7.5 Deflection shape control according to GOST 26877.

7.6 each of the control sheet, strip, rod, profile selected for the test:

— tensile one sample;

— tensile in the direction of thickness of rolled one sample;

— bend wide samples — one sample;

— fracture, and to determine the fibrous fracture — one sample;

— the impact strength on the samples with a concentrator of U (KCU) in the delivery condition — two of the sample;

— the impact strength on the samples with the hub of the form V (KCV) in the delivery condition — two of the sample;

— the impact strength on the samples with a concentrator of U (KCU) after mechanical aging — two sample.

7.6.1 For HRP samples for all tests, except for tensile testing in the thickness direction, cut across the direction of rolling. For universal broadband and the varietal of the rolled strip samples for all tests, except for tensile testing in the thickness direction, cut along the direction of rolling. For long products (round, square and hexagonal) and sections samples for all the tests, cut along the direction of rolling.

By agreement between manufacturer and customer plates additionally tested for tensile and impact strength on the samples taken along the direction of rolling. The number, criteria and norms of mechanical properties are similar to samples taken across the direction of rolling. The test results of HRP carried out on samples taken along the direction of rolling, to 01.01.2016 are not a sign of rejection, they are entered into the document of quality.

7.6.2 Samples for tensile testing in the thickness direction of the plate, broadband and long steel bars cut in the direction perpendicular to the plane of rolling.

7.7 tensile Tests carried out according to GOST 1497.

7.8 tensile Tests in the thickness direction of the rolled carried out according to GOST 28870.

7.9 Testing the impact strength is carried out according to GOST 9454. For products with thickness from 5 to 10mm tests carried out on samples of types 2 and 3 (samples with U hub). For products with thickness 10 mm or more tests carried out on samples of type 1 (the samples with the hub U) and 11 (models with hub V).

On the samples taken from the rolled thickness of 10 mm, allowed two rough surfaces. Allowed a similar test samples taken from rolled steel of thickness 10 mm, laminated with the negative limit deviation.

Test rolled with a thickness of 5 mm or less, carried out on samples with a thickness equal to the thickness of the rental.

7.10 Testing the impact strength after mechanical aging is carried out according to GOST 7268. For heat-treated (heat-vacation) rentals allowed prior deformation by compression.

7.11 the bend Test a wide sample carried out according to GOST 14019. Samples should be of a width equal to three thicknesses of rolled products. The length of samples depending on the thickness of the hire is taken in accordance with table 8.


Table 8 — Length of specimen for bend test a wide sample

In millimeters

The thickness of the rolled						The length of the sample
From	10	to	14	incl.		250±20
«	14	«	24	«		300±20
«	24	«	32	«		350±20
SV.	32	«	50	«		430±20

Length samples rolled with thickness more than 50 mm agreed when ordering.

7.12 Testing the fracture is carried out by destruction at temperatures from 5 °C to 30 °C, notched specimens with a thickness equal to the thickness of the rental. The size and depth of cut specimens for testing fracture take in accordance with the specified in table 9.


Table 9 — Dimensions and depth of cut specimens for testing fracture

In millimeters

The thickness of the rolled					Length samples	Sample width	The depth of the incision
From	10	to	14	incl.	300±20	60±5	20±5
SV.	14	«	32	«	350±20	90±5	30±5
«	32	«	50	«	430±20	120±5	50±5

Length samples rolled with thickness more than 50 mm agreed when ordering.

Samples cut from rolled gas cutting or by mechanical means. Incision thickness perform in any way. The destruction of the sample is carried out under static bending load exerted on the side opposite the incision.

Inventory control shrinkage, podnasadochnogo of rychlosti, cracks and gas bubbles to products with thickness 40 mm and more is carried out according to GOST 10243. For products with thickness from 10 to 40 mm, the control is carried out according to GOST 10243 without using the shrink coefficient.

In evaluating the type of fracture take into account the presence of crystalline rash — fine crystalline glitter evenly distributed on the background of fibrous fracture, and areas of the crystalline component. Crystal rash across the field of the fracture is equal to 10% crystalline (brittle) component.

The land area fiber (viscous) and crystalline (brittle) component is determined in accordance with GOST 30456 or by other means as agreed between the manufacturer and the customer.

7.13 the Continuity plate and universal broadband rental test method for ultrasonic testing according to GOST 22727, sections of the strip — according to the method of the manufacturer of long products (round and square) — according to GOST 21120.

8 Transportation and storage

8.1 Marking, packaging, transportation and storage of rental — according to GOST 7566 with the following additions.

8.1.1 rental transporterowych rail on the open rolling stock in accordance with the goods transportation regulations applicable to transport of this species. Type of shipment — carload.

8.1.2 Loading, mounting and positioning of the rentals should be implemented under shot 22235 [2].

Annex a (recommended). An abridged assortment of products for use in steel structures of bridges

Appendix A
(recommended)

This Appendix describes the reduced assortments plate, universal broadband, and sections, the recommended design organizations, factories, izgotovlyayuschei steel bridge structures, bridge-building organizations.


Table A. 1 — hot-rolled plate (GOST 19903)

In millimeters

Nominal thickness	Width								Length
	1400	1500	1600	1800	2000	2200	2500	2800
4	+	+	+	-	-	-	-	-	8000
6	+	+	+	-	-	-	-	-
8	+	+	+	-	-	-	-	-
10	+	+	+	+	+	+	+	-	To 12000
12	+	+	+	+	+	+	+	+	To 14100
14	+	+	+	+	+	+	+	+	To 14100
16	+	+	+	+	+	+	+	+	To 14100
20	+	+	+	+	+	+	+	+	To 14100
25	+	+	+	+	+	+	+	-	To 14100
32	+	+	+	+	+	-	+	+	To 14100
40	+	+	+	+	-	-	+	+	To 14100
50	+	+	+	-	-	-	+	+	To 14100
Notes 1 the length of the leaves are stipulate in the order. 2 rolled nominal thickness 32, 40, 50 with a width of 2500 and 2800 are delivered to agreement between manufacturer and customer. 3 the Sign «-" means that the rental data sizes don’t deliver.

Table A. 2 — Bicycle universal broadband (GOST 82)

In millimeters

Nominal thickness	Width
	120	140	160	180	200	260	300	360	400	420	560	600	640
12	+	+	+	+	+	+	+	+	+	-	-	-	-
14	-	+	+	+	+	+	+	+	+	+	-	-	-
16	-	-	+	+	+	+	+	+	+	+	+	-	-
20	-	-	-	+	+	+	+	+	+	+	+	+	-
25	-	-	-	+	+	+	+	+	+	+	+	+	+
32	-	-	-	-	+	+	+	+	+	+	+	+	+
Notes 1 bar Length: — 14100 mm — when shipping on the platforms with the distance between automatic coupling points 14620 mm; — 12050 mm — when shipped in open-top models 12−757; 12−535. In agreement with the manufacturer, the length may be either in the range of 5,000 to 18100 mm according to GOST 82. 2 the Sign «-" means that the rental data sizes don’t deliver.

Table A. 3 — Corners steel hot-rolled angle (GOST 8509) and angle (churchyard 8510)

Dimensions are in millimeters

GOST 8509			GOST 8510
Room	Section	Length	Room	Section	Length
5	50x50x5	9000	12,5/8	125x80x8	11000
6,3	63x63x6	9000	12,5/8	125x80x10	11000
7	70x70x6	9000	16/10	160x100x10	11000
8	80x80x8	11000	20/12,5	200x125x12	11000
9	90x90x9	11000	20/12,5	200x125x16	11000
10	100x100x10	11000
10	100x100x12	11000
12,5	125x125x10	11000
12,5	125x125x12	11000
16	160x160x10	11000
16	160x160x12	11000
16	160x160x16	11000
20	200x200x16	11000
20	200x200x12	11000

Table A. 4 — Channels hot rolled steel (according to GOST 8240)

Dimensions are in millimeters

With a slope faces internal shelves				With parallel flange edges
Room	Height	Width shelves	Length	Room	Height	Width shelves	Length
12U	120	52	12000	12P	120	52	1200
14U	140	58	12000	14P	140	58	1200
16U	160	64	12000	16P	160	64	1200
20U	200	76	12000	20P	200	76	1200
30U	300	100	12000	30P	300	100	12000

Table A. 5 — hot rolled I-Beams (GOST 8239), hot rolled I-beams with parallel flange edges (GOST 26020)

Dimensions are in millimeters

With a slope faces internal shelves				With parallel flange edges
Room	Height	Width shelves	Length	Room	Height	Width shelves	Length
12	120	64	12000	12B2	120	64	To 24000
14	140	73	12000	15Б2	140	73	To 24000
16	160	81	12000	16B2	160	82	To 24000
20	200	100	12000	18B2	180	91	To 24000
30	300	135	12000	26Б2	261	120	To 24000
40	400	155	12000	30Б2	299	140	To 24000
50	500	170	12000	36Б2	349	155	To 24000
55	550	180	12000	40B2	396	165	To 24000
60	600	190	12000	45B2	447	180	To 24000
				50Б2	496	200	To 24000
				60Б2	597	230	To 24000
				80Б2	798	280	To 24000
				100Б2	998	320	To 24000
				50Ш2	489	300	To 24000
				60Ш2	587	320	To 24000
				70Ш2	691	320	To 24000
				40К2	400	400	To 24000
Note — Length I-beams stipulate in the order.

Appendix B (mandatory). Scheme and examples of symbols

Appendix B
(required)

Examples of symbols:

Rolled hot rolled I beam, measuring the length (MD), No. 30 GOST 8239−89, from 15KHSND steel, strength class 345:



The hot rolled steel, steel random length (ND), the number 20 with parallel flange edges (P) according to GOST 8240−97, of steel grade 14ХГНДЦ, strength class 345:



Hire steel hot-rolled square, high precision rolling (B1), length dimensional with random length (КД1), class III by the curvature, with the side of a square of 50 mm according to GOST 2591−2006 of steel 09G2SD, grade 325, group of quality surface 3ГП:

*
_______________
* The text of the document matches the original. — Note the manufacturer’s database.

Hire plate mill, high precision rolling (B), high flatness (PV), with cut edges (O), size 8х1400х6000 mm according to GOST 19903−74, of 10KHSND steel, strength class 390, category supply 3, with the control ultrasonic inspection of class 1 (UT-1):