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  • ASTM
    A914/A914M-19(2024) Standard Specification for Steel Bars Subject to Restricted End-Quench Hardenability Requirements
    Edition: 2024
    $144.00
    Unlimited Users per year

Description of ASTM-A914/A914M 2024

ASTM A914/A914M-19-Reapproved2024

Active 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.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


Keywords

bars; restricted hardenability;


ICS Code

ICS Number Code 77.140.60 (Steel bars and rods)


DOI: 10.1520/A0914_A0914M-19R24



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