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ASTM A914/A914M-92

Historical Revision

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

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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.


SDO ASTM: ASTM International
Document Number A914
Publication Date Dec. 15, 1992
Language en - English
Page Count 27
Revision Level 92
Supercedes
Committee A01.15
Publish Date Document Id Type View
Nov. 1, 2019 A0914_A0914M-19 Revision
Dec. 1, 2016 A0914_A0914M-16 Revision
Dec. 15, 1992 A0914_A0914M-92R99E01 Revision
Dec. 15, 1992 A0914_A0914M-92 Revision
Aug. 15, 2024 A0914_A0914M-19R24 Reaffirmation
April 1, 2011 A0914_A0914M-92R11 Reaffirmation
March 1, 2005 A0914_A0914M-92R05 Reaffirmation
Dec. 15, 1992 A0914_A0914M-92R99 Reaffirmation