Standard Specification for Steel Bars, Alloys, for Nitriding

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

09-06-2022

Publisher

American Society for Testing and Materials

Committee	A 01
DocumentType	Standard
Pages	3
PublisherName	American Society for Testing and Materials
Status	Current
Supersedes	ASTM A 355 : 1989 : R2017

1.1This specification covers alloy steel bars, suitable for surface hardening by nitriding, designated as Classes A, B, C, and D. Class A and Class D bars are general-purpose bars; Class B bars are free-machining bars; Class C bars contain 3.50 % nickel and are characterized by higher core strength. All classes are normally furnished in the hot-rolled, quenched, and tempered condition. However, centerless-ground or turned bars, in any of the classes, may be specified by the purchaser. Also, as-rolled, annealed, or unannealed bars suitable for forging may be purchased to this specification. When as-rolled, annealed, or unannealed bars are furnished, Sections 6, 10, and 11 are not applicable.

1.2The 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.

1.3This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM A 29/A29M : 2023	Standard Specification for General Requirements for Steel Bars, Carbon and Alloy, Hot-Wrought
ASTM A 29/A29M : 2020	Standard Specification for General Requirements for Steel Bars, Carbon and Alloy, Hot-Wrought