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ASTM A304-05(2011)

Standard Specification for Carbon and Alloy Steel Bars Subject to End-Quench Hardenability Requirements

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.

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