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ASTM A255-10(2014)

Standard Test Methods for Determining Hardenability of Steel
- 발행일 : 2014-10-01
- 발행기관 : ASTM
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분야

01.05 : 철강-환봉, 단조품, 베어링, 체인, 스프링

적용범위

1.1 These test methods cover the identification and description of test methods for determining the hardenability of steels. The two test methods include the quantitative end-quench or Jominy Test and a method for calculating the hardenability of steel from the chemical composition based on the original work by M. A. Grossman.

1.2 The selection of the test method to be used for determining the hardenability of a given steel shall be agreed upon between the supplier and user. The Certified Material Test Report shall state the method of hardenability determination.

1.3 The calculation method described in these test methods is applicable only to the range of chemical compositions that follow:

	Element	Range, %

	Carbon	0.10–0.70
	Manganese	0.50–1.65
	Silicon	0.15–0.60
	Nickel	1.50 max
	Chromium	1.35 max
	Molybdenum	0.55 max
	Copper	0.35 max
	Vanadium	0.20 max

1.4 Hardenability is a measure of the depth to which steel will harden when quenched from its austenitizing temperature (Table 1). It is measured quantitatively, usually by noting the extent or depth of hardening of a standard size and shape of test specimen in a standardized quench. In the end-quench test the depth of hardening is the distance along the specimen from the quenched end which correlates to a given hardness level.

(A) A variation of ±10°F (6°C) from the temperatures in this table is permissible.

(B) Normalizing and austenitizing temperatures are 50°F (30°C) higher for the 6100 series.

1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

국제분류(ICS)코드

페이지수

Edition

10(2014)

이력정보

No.	표준번호	표준명	발행일	상태
1	ASTM A255-20a상세보기	Standard Test Methods for Determining Hardenability of Steel	2020-11-01	표준
2	ASTM A255-20a REDLINE상세보기	Standard Test Methods for Determining Hardenability of Steel	2020-11-01	표준
3	ASTM A255-20상세보기	Standard Test Methods for Determining Hardenability of Steel	2020-07-01	구판
4	ASTM A255-20 REDLINE상세보기	Standard Test Methods for Determining Hardenability of Steel	2020-07-01	구판
5	ASTM A255-10(2018)상세보기	Standard Test Methods for Determining Hardenability of Steel	2018-09-01	구판
6	ASTM A255-10(2014)상세보기	Standard Test Methods for Determining Hardenability of Steel	2014-10-01	구판
7	ASTM A255-10상세보기	Standard Test Methods for Determining Hardenability of Steel	2010-05-01	구판
8	ASTM A255-07상세보기	Standard Test Methods for Determining Hardenability of Steel	2007-09-01	구판
9	ASTM A255-07e1상세보기	Standard Test Methods for Determining Hardenability of Steel	2007-09-01	구판
10	ASTM A255-02e1상세보기	Standard Test Methods for Determining Hardenability of Steel	2002-03-10	구판
11	ASTM A255-99상세보기	Standard Test Method for Determining Hardenability of Steel	2002-03-10	구판
12	ASTM A255-02상세보기	Standard Test Method for Determining Hardenability of Steel	2002-03-10	구판