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ASTM-A914:1999 Edition

ASTM-A914:1999 Edition

$58.50

A914/A914M-92(1999)e1 Standard Specification for Steel Bars Subject to Restricted End-Quench Hardenability Requirements

Published By Publication Date Number of Pages
ASTM 1999 27
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1.1 This specification covers hot-worked alloy and carbon-boron steels designed to attain restricted depth of hardening in the end-quench test. These steel compositions are identified by the suffix letter ‘RH’ added to the conventional grade number.

1.2 In general, steels with restricted hardenability (RH steels) will exhibit a hardness range not greater than 5 HRC at the initial position on the end-quench hardenability bar and not greater than 65% of the hardness range for standard H-band steels (Specification A304) in the inflection region. Generally the restricted hardenability band follows the middle of the corresponding standard H-band. An example of the RH band compared with the H band is given for Grade 4140 in Fig. 1.

1.3 This specification is expressed in both inch-pound units and SI units. However, the material will be supplied to inch-pound units unless the purchase order specifies the ‘M’ specification designation.

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