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ASTM-A914/A914M:2016 Edition

ASTM-A914/A914M:2016 Edition

$58.50

A914/A914M-16 Standard Specification for Steel Bars Subject to Restricted End-Quench Hardenability Requirements

Published By Publication Date Number of Pages
ASTM 2016 27
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ASTM A914/A914M-16

Historical Standard: Standard Specification for Steel Bars Subject to Restricted End-Quench Hardenability Requirements

ASTM A914/A914M

Scope

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.

1.2.1 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

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.

Keywords

bars; restricted hardenability;

ICS Code

ICS Number Code 77.140.60 (Steel bars and rods)

DOI: 10.1520/A0914_A0914M-16

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