ASTM-A914:1992 Edition

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

Published By	Publication Date	Number of Pages
ASTM	1992	27

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Description

ASTM A914/A914M-92

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.

1.3 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

Carbon-boron steel; End-quench hardenability; Hardenability-steel; Steel bars-alloy steel; Steel bars-carbon steel; steel bars-alloy (hot-worked)/carbon-boron, subject to restricted; end-quench hardenability requirements, spec

ICS Code

ICS Number Code n/a

DOI:

Additional information

Standard Title	A914/A914M-92 Standard Specification for Steel Bars Subject to Restricted End-Quench Hardenability Requirements
Published Code	ASTM
Publication Date	1992
Pages Count	27