1. Scope
1.1 This specification covers hot-worked alloy, carbon, and carbon-boron steels in a variety of compositions and sizes, which may attain specified depth of hardening in the end quench test. These steel compositions are identified by the suffix letter “H” added to the conventional grade number.
1.2 This specification provides for analyses other than those listed under Tables 1 and 2. Special hardenability limits are also permissible when approved by the purchaser and manufacturer.
1.3 The values stated in inch-pound units are to be regarded as the standard.
1.3.1 The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this standard.
2. Referenced Documents (purchase separately) 
The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
A29/A29M Specification for Steel Bars, Carbon and Alloy, Hot-Wrought, General Requirements for
A108 Specification for Steel Bar, Carbon and Alloy, Cold-Finished
A255 Test Methods for Determining Hardenability of Steel
E112 Test Methods for Determining Average Grain Size
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
Keywords
alloy steel bars; carbon steel bars; end quench hardenability; steel bars: Alloy steel bars--specifications; Alternating-current permeability; End-quench hardness; Hardenability (steel)--specifications; Structural steel (SS) bars--specifications;
ICS Code
ICS Number Code 77.140.60 (Steel bars and rods)
DOI: 10.1520/A0304-05R11
ASTM International is a member of CrossRef.
Citing ASTM Standards
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