ASTM A962/A962M-23 pdf free download – Standard Specification For Common Requirements For Bolting Intended For Use At Any Temperature From Cryogenic To The Creep Range.
This specification is expressed in both inch-pound units and in SI units. Unless the purchase order or contract specifies the applicable “M” specification designation (SI units) the inch-pound units shall apply. The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. 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 nonconformance with the specification.
9. Hardness Requirements
9.1 The material shall conform to the hardness requirements prescribed in the product specification. Hardness testing shall be performed in accordance with Test Methods and Definitions A370 when inch-pound units are specified or to the applicable track of Test Methods A1058 if SI units are specified.
9.2 Tensile tests prevail over hardness tests in the event a confict exists relative to minimum strength unless otherwise specified in the product specification.
10. Tensile Requirements
10.1 Bars and Specimens Machined From Components-The bolting component material shall conform to the tensile property requirements prescribed in the product specification.
10.1.1 When the dimensions of the component material to be tested will permit, the tension test specimens shall be machined to the form and dimensions of the standard 2- -in.[50-mm] gage length tension test specimen described in Test Methods and Definitions A370 when inch-pound units are specified or the standard length tension test specimens described in the applicable track of Test Methods A1058 if SI units are specified.

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