Norm

ASTM A914/A914M-92(2011)

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

78,39

Over deze norm

Status Definitief
Aantal pagina's 27
Commissie A01.15
Gepubliceerd op 01-04-2011
Taal Engels

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.

Details

ICS-code 77.140.60
Nederlandse titel Standard Specification for Steel Bars Subject to Restricted End-Quench Hardenability Requirements
Engelse titel Standard Specification for Steel Bars Subject to Restricted End-Quench Hardenability Requirements

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