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ASTM A 255 : 2010 : R2014

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by

Standard Test Methods for Determining Hardenability of Steel

Available format(s)

Hardcopy , PDF

Superseded date

17-08-2020

Language(s)

English

Published date

01-10-2014

€96.91
Excluding VAT

CONTAINED IN VOL. 01.05, 2017 Describes the identification and description of test methods for determining the hardenability of steels.

Committee
A 01
DocumentType
Test Method
Pages
26
ProductNote
Reconfirmed 2014
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy
Supersedes

1.1These 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.

1.2The 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.

1.3The 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

1.4Hardenability 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.

1.5The 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.

1.6This 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.

SAE AMS6427P Steel Bars, Forgings, Mechanical Tubing, and Forging Stock, Aircraft Quality, 0.88Cr - 1.8Ni - 0.42Mo - 0.08V (0.28 - 0.33C) (4330 Mod)

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