GOST R 52927-2015

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  ГОСТ Р 52927-2015

GOST R 52927−2015 Rent for shipbuilding from steel of normal, high and high strength. Specifications (with Amendment)

GOST R 52927−2015

NATIONAL STANDARD OF THE RUSSIAN FEDERATION

RENT FOR SHIPBUILDING FROM STEEL NORMAL, INCREASED AND HIGH STRENGTH

Technical specifications

Rolled of normal, increased — and high-strength steel for shipbuilding. Specifications

GCS 77.140.50
77.140.70
OKP 09 3100
09 3114

09 7100

Date of Introduction 2016−04−01

Foreword

1 DEVELOPED by the Technical Committee for Standardization TK 375 «Metal products from ferrous metals and alloys», Federal State Unitary Enterprise «Central Research Institute of Structural Materials» Prometey «(FSUE CRI KM Prometey), Federal State Unitary Enterprise» Central Research and Development Institute of Ferrous Metallurgy im.I.P. Bardin «(FSUE» TsNIichermet im.I.P. Bardina «)

2 was introduced by the Technical Committee for Standardization of TC 375 „Metal products from ferrous metals and alloys"

3 APPROVED and ENTRY INTO FORCE The order of the Federal Agency for Technical Regulation and Metrology of July 20, 2015 N 912-st

4 REPLACEMENT GOST R 52927−2008


The rules of application of this standard are set in GOST R 1.0−2012 (section 8). The information on changes to this standard is published in the annual (as of January 1 of the current year) information index „National Standards“, and the official text of the amendments and amendments is published in the monthly information index „National Standards“. In case of revision (replacement) or cancellation of this standard, a corresponding notice will be published in the next issue of the monthly information index „National Standards“. The relevant information, notifications and texts are also posted in the public information system — on the official website of the Federal Agency for Technical Regulation and Metrology on the Internet (www.gost.ru)


An amendment has been introduced, published in IMS No. 11, 2016

The amendment was made by the database manufacturer

1 area of use

This standard applies to thick-plate, broadband, universal, strip and shaped steel bars of normal, high and high strength steel (hereinafter referred to as rolling) intended for sea and river vessels, oil and gas platforms, pontoons, moorings and other welded structures (including working in arctic conditions). In terms of the norms of the chemical composition, the standard also applies to ingots, blooms, baits, forged, rolled and cast billets.

The rental is intended for the construction of ships and marine technical facilities corresponding to the class of the Register (the Russian Maritime Register of Shipping (RMRS) and / or the Russian River Register (RRR)) under the technical supervision of the Register. brand, thickness and production technology, issued on the basis of certification tests under the program of the Register.

2 Normative references

Normative references to the following standards are used in this standard:

GOST 25.506−85 Calculations and strength tests. Methods of mechanical testing of metals. Determination of fracture toughness characteristics (fracture toughness) under static loading

Rolled steel hot-rolled broadband universal. Assortment

Graded rolled steel hot-rolled strip. Assortment

GOST 166−89 (ISO 3599−76) Calipers. Technical specifications

Measuring rulers metal. Technical specifications

GOST 535−2005 High-quality and graded rolled steel of ordinary quality. General specifications

GOST 1497−84 (ISO 6892−84) Metals. Methods of tensile testing

GOST 4543−71 Rolled from alloyed structural steel. Technical specifications

Goniometers with nonius. GOST 5378−88. Technical specifications

GOST 5639−82 Steels and alloys. Methods for the detection and determination of grain size

GOST 6507−90 Micrometers. Technical specifications

GOST 7564−97 Rent. General rules for sampling, blanks and samples for mechanical and process tests

GOST 7565−81 (ISO 377−2-89) Cast iron, steel and alloys. Method of sampling for chemical composition determination

GOST 7566−94 Metal products. Acceptance, marking, packaging, transportation and storage

Channel bars, hot-rolled

Corners steel hot-rolled equilateral. Assortment

Corners steel hot-rolled unequal. Assortment

GOST 9235−76 Hot-rolled symmetrical logs for shipbuilding. Assortment

Carbon steel and cast iron, unalloyed. Methods for the determination of chromium

Carbon steel and cast iron, non-alloy. Methods for determination of copper

Carbon steel and cast iron, unalloyed. Methods for the determination of nickel

Carbon steel and cast iron, unalloyed. Methods for determination of aluminum

Carbon steel and cast iron, non-alloy. Methods for determination of titanium

Carbon steel and cast iron, unalloyed. Methods for determination of vanadium

Rolled sheet. Methods of ultrasonic testing

GOST 26877−2008 Metal products. Methods for measuring the deviation of the shape

GOST 28473−90 Cast iron, steel, ferroalloys, chromium, manganese, metallic. General requirements for analysis methods

GOST 28870−90 Steel. Methods for testing the tensile thickness of rolled products in the direction of thickness

GOST R 52381−2005 (ISO 8486−1: 1996, ISO 6344−2: 1998, ISO 9138: 1993, ISO 9284: 1992) Abrasive materials. Grain and grain composition of grinding powders. Control of grain composition

NOTE — When using this standard it is advisable to check the operation of reference standards in the public information system — on the official website of the Federal Agency for Technical Regulation and Metrology on the Internet or on the annual information index „National Standards“, which was published as of January 1 of this year, and on the issues of the monthly information index „National Standards“ for the current year. If you replace the reference standard for which an undated reference is given, then the current version of this standard is recommended, taking into account all changes made to this version. If the reference standard, to which the reference is dated, is replaced, then the version of this standard with the above approval year is recommended. If, following the approval of this standard, a reference is made to the reference standard for which the reference is dated, a change affecting the provision referred to is made, it is recommended that this provision be applied without regard to this change. If the reference standard is abolished without replacement, then the provision in which it is referenced is recommended to apply in a part that does not affect this reference.

3 Terms and definitions

In this standard, the following terms are used with the corresponding definitions:

3.1 Hot-rolled condition (high-temperature rolling) NOTE — Double hardening is allowed followed by tempering. This process, which includes heating the steel to a temperature above the temperature of Ac at 130 ° C-250 ° C in order to maximize the dissolution of secondary phases and subsequent accelerated cooling (first quenching), then heating the steel to a temperature above the temperature of Ac at 30 ° C-100 ° C, followed by cooling at a rate providing a hardened structure (second hardening), then heating the hardened steel to a temperature not exceeding the Ac temperature , exposure at this temperature (vacation).

3.5 thermomechanical treatment; TM: A process involving strict control of temperature and degree of deformation during rolling. As a rule, the deformation of the metal ends at temperatures close to the temperature Ar , the end of the deformation is possible in a two-phase region. In the process of thermomechanical processing, accelerated cooling (AcS) can be used.

NOTE — Accelerated cooling; AcS: The process by which steel properties are improved through controlled cooling at a rate greater than cooling in air. This process is performed immediately after the deformation is completed during the thermomechanical process.

3.6. Hardening with rolling heating followed by tempering; QpnT: The process in which steel rolling is performed at temperatures above the Ar temperature , followed by accelerated cooling to a temperature below the completion temperature transformations and subsequent heating of the hardened steel to a temperature below the temperature of Ac , exposure at this temperature (vacation).

3.7 coefficient of plastic deformation in thickness: The ratio of the initial thickness of the workpiece to the final nominal thickness of the sheet.

4 Terms of order

When ordering, the following basic data should be indicated:

— brand (category) become;
________________
Instead of the term „steel grade“, the term „steel category“ (hereafter) may be used.


— designation of this standard;

— type of hire;

— weight;

— number of rental units;

— nominal dimensions and limit deviations;

— the required flatness (straightness for profile rolled products) and the quality of the rolled edge;

— the need for ultrasonic testing;

— the need to monitor the Register;

— for steel with the index „Arce“ the minimum design temperature of the material Td (5.5.3);

— a mark on the rental, supplied for the production of objects that are objects of technical regulation of the Technical Regulations on the safety of inland waterway transport facilities (if necessary); in the order indicate „TP RR“.

Rental provided under the supervision of the register (RMRS or PPP) may have additional requirements that differ from this standard, but are governed by the current edition of the Register Rules.

5 Classification of steel grades, designations

Rolled for shipbuilding is made of unalloyed special, alloyed high-quality and alloyed special steels of the following grades (categories):

5.1 Steel of normal and increased strength of base grades :
________________
The base grade of steel is steel without additional requirements for weldability and resistance to laminated fractures.


— normal strength:

A, B, D, E;

— increased strength:

A27S, D27S, E27S;

A32, D32, E32;

A36, D36, E36;

A40, D40, E40;

A40S, D40S, E40S.

5.2 Steel of normal and increased strength with a guarantee of resistance to layered ruptures with indices „Z25″, „Z35″:

BZ25, DZ25, EZ25, BZ35, DZ35, EZ35;

A27SZ25, D27SZ25, E27SZ25, A27SZ35, D27SZ35, E27SZ35;

A32Z25, D32Z25, E32Z25, A32Z35, D32Z35, E32Z35;

A36Z25, D36Z25, E36Z25, A36Z35, D36Z35, E36Z35;

A40Z25, D40Z25, E40Z25, A40Z35, D40Z35, E40Z35.

5.3 Steel of normal and increased strength of improved weldability with a guarantee of resistance to laminated ruptures with the index „W“:

BW, DW, EW;

A27SW, D27SW, E27SW;

A32W, D32W, E32W;

A36W, D36W, E36W;

A40W, D40W, E40W;

A40SW, D40SW, E40SW.

5.4 High strength steel of improved weldability with a guarantee of resistance to laminated breaks with index „W“:

D420W, E420W;

D460W, E460W;

D500W, E500W.

5.5 Steel of normal, high and high strength of improved weldability with a guarantee of resistance to laminated ruptures with the index „W“ for structures operating at low temperatures

5.5.1 Steel of normal strength, improved weldability with a guarantee of resistance to laminated ruptures:

FW.

5.5.2 High-strength steel of improved weldability with a guarantee of resistance to laminated fractures:

F32W;

F36W, F36SW;

F40W, F40SW.

5.5.3 Increased strength steel of improved weldability with a guarantee of resistance to layered ruptures with an index „Ars“ of at least 25.0 mm thick, used for any structural elements without limitations to a temperature not lower than Td, selected with an interval of 5 ° C (Td — material temperature, T  — Design temperature of the structure. For custom documentation Td = T in the absence of special instructions):

F32W ;

F36W , F36SW ;

F40W , F40SW .

5.5.4 High strength steel of improved weldability with a guarantee of resistance to laminated fractures:

F420W, F460W, F500W.

5.5.5 High strength steel of improved weldability with a guarantee of resistance to layered tears with an index of „Ars“ of at least 25.0 mm thick, used for any structural elements without limitations to a temperature not lower than Td selected with an interval of 5 ° C:

F420W , F460W , F500W .

5.6 Legend of indices in the steel grade

S is the symbol added after the designation of the steel category, if this steel for any reason does not fully comply with the requirements of the Rules for the Classification and Construction of Sea-going Ships, and the Rules for the Classification, Construction and Equipment of Floating Drilling Units and Offshore Fixed Platforms, but after approval by the Register ;

Z25 — steel with a normalized value of the relative contraction in the direction of thickness Zz 25%;

Z35 — steel with a normalized value of the relative contraction in the direction of thickness Zz 35%;

W — improved weldability steel with a normalized Zz value 35%.

Arc is a symbol added as an upper index to the steel designation of category F satisfying the requirements for steels of improved weldability and requirements for Z-properties. Next to the symbol, the calculated (minimum) temperature of the material Td (without the minus sign) is indicated, to which steel can be used for any structural elements without limitations;

PC — steel supplied under the technical supervision of the Register (for example, PC D32). In the designation of the category of increased strength for the category symbol, the letter H (for example, PC DH32) may be added to the category symbol at the customer’s request, and the letter Q (for example, PC EQ500W) can be added to the category symbol of high strength.

() — relative extension, %;

KV — impact work, determined on samples with a V-notch, J;

Zz — relative narrowing in the direction of sheet thickness,%;

CTOD — critical opening in the top of a crack, mm.

6 Assortment

6.1 Dimensions and marginal deviations of thick-plate, strip, wide-band universal and shaped rolled products

6.1.1. Rolled plates (hereinafter referred to as sheet) are produced in the form of sheets and cut sheets of rolls of the thickness indicated in Table 1, from 4500 to 12000 mm inclusive, from 1000 to 3200 mm in width. Limit deviations in length and width must comply with the requirements of GOST 19903.


Table 1 — Thickness of sheet metal depending on the grade of steel

6.1.2 The rolling width is more than 3200 to 4800 mm inclusive and the length of the rolled product up to 24000 mm inclusive is determined by the manufacturer’s agreement with the customer. For steel of normal strength of categories A, B, D with all indices and increased strength A27S, D27S, A32, D32, A36, D36, with all indices except „Аrс“, double-width sheets can be rolled as agreed by the manufacturer with the customer when placing the order .

6.1.3. Sheets of thickness from 4.0 to 20.0 mm are manufactured with an interval of 0.5 mm, more than 20.0 mm — with an interval of 1.0 mm.

6.1.4. The sheet rolling is delivered with the maximum minus deviations in the thickness of rolled metal not more than 0.3 mm and the maximum positive deviations in accordance with the requirements of Table 2.


Table 2 — Maximum positive deviations in thickness of sheet metal

In millimeters

6.1.5 At the request of the customer, sheet rolling is manufactured with the maximum minus thickness deviations in accordance with the requirements of Table 3 (with the indication in the order of the accuracy of manufacture — „T“). In this case, the maximum positive deviations in the thickness of the sheets are limited by the requirements for the batch weight in accordance with 8.7.


Table 3 — Limit minus deviations in thickness of sheet metal

In millimeters