GOST R ISO 2566-2-2009

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  ГОСТ Р ИСО 2566-2-2009

GOST R ISO 2566−2-2009 Steel. Translation of values of relative elongation. Part 2. Steel austenitic

GOST R ISO 2566−2-2009

Group B09

NATIONAL STANDARD OF THE RUSSIAN FEDERATION

Steel

THE TRANSLATION OF THE VALUES OF THE ELONGATION

Part 2

STEEL AUSTENITIC

Steel. Conversion of elongation values. Part 2. Austenitic steel

OKS 77.040.10
AXTU 0709

Date of introduction 2010−06−01

Preface

The objectives and principles of standardization in the Russian Federation established by the Federal law of 27 December 2002 N 184-FZ «On technical regulation», and rules for the application of national standards of the Russian Federation — GOST R 1.0−2004 «Standardization in the Russian Federation. The main provisions"

Data on standard

1 PREPARED AND SUBMITTED by the Technical Committee for standardization TC 145 «monitoring Methods of steel products» based on the authentic translation of the standard referred to in paragraph 3, is FSUE «STANDARTINFORM"

2 APPROVED AND put INTO EFFECT by the Federal Agency for technical regulation and Metrology of December 11, 2009 N 733-St

3 this standard is identical with ISO 2566−2:1984 «Steel. Translation of values of relative elongation. Part 2. Austenitic steel» (ISO 2566−2:1984 «Steel — Conversion of elongation values — Part 2: Austenitic steels»)

4 INTRODUCED FOR THE FIRST TIME

Information about the changes to this standard is published in the annually issued reference index «National standards», and the text changes and amendments — in monthly indexes published information «National standards». In case of revision (replacement) or cancellation of this standard a notification will be published in a 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

1 Scope

This standard specifies the method of translating values of elongation at room temperature after the destruction of the sample obtained on various proportional and non-proportional bases lengths, other lengths of the bases.

The standard covers austenitic stainless steel with a tensile tensile strength from 450 to 750 N/mmafter heat treatment.

Transfer method does not cover are:

a) deformed in a cold state;

b) quenched and tempered;

c) nieustannie.

This transfer method should not be used if the base length exceeds the value of 25, and if the ratio of the width to the thickness of the test sample exceeds 20.

2 Notation

Symbols used in this standard, are given in table 1.


Table 1

3 Terms and definitions

This standard applies the following terms with respective definitions:

3.1 base length (gauge length): Any length of the parallel area of the test sample, which is used for measuring strain. This term is used to denote the original length of the base , marked on test specimen for determining elongation after fracture.

3.2 is proportional to the base length (proportional gauge length): the Length of the base, having established the dependence with the square root of the cross section, for example of 5.65.

3.3 the disproportionate length of the base (non-proportional gauge length): the Length of the base is not connected in some way with the cross-sectional area of the test sample, which has a certain size, for example 50 mm.

4 the Basic formula

The data of this standard is based on the formula obtained by statistical evaluation of test results, which in simplified form can be expressed as follows

, (1)

where is the required elongation on the length of the base ;

the elongation on the length of the base of 5.65.

When the length of the base 4, the formula takes the following form

, (2)

where the elongation on the length of the base 4.

According to the formulas (1) and (2) the calculated values of tables 2−22 and figures 1−5.


Table 2 — conversion Factors for the proportional lengths of the bases

Table 3 — conversion Factorsfor disproportionate lengths of the bases

Table 4 — conversion Factors from the length of the base of 5.65disproportionate to the length of the base

Table 5 — Coefficients of translation elongation on the length of the base 4in a disproportionate lengthening the length of the base