ASTM A921/A921M Standard Specification for Steel Bars, Microalloy, Hot-Wrought, Special Quality, for Subsequent Hot Forging
Данный раздел/документ содержится в продуктах:
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- ASTM B603 Standard Specification for Drawn or Rolled Iron-Chromium-Aluminum Alloys for Electrical Heating Elements
- ASTM B603 Standard Specification for Drawn or Rolled Iron-Chromium-Aluminum Alloys for Electrical Heating Elements
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- API SPEC 6A Specification for Wellhead and Christmas Tree Equipment - TWENTIETH EDITION; Effective April 1, 2011; Incorporating ERTA 1: January 2011; ADDENDUM 1: November 2011; ERTA 2: November 2011; ADDENDUM 2: November 2012; ADDENDUM 3: March 2013; ERTA 3: June 2013; ERTA 4: August 2013; ERTA 5: November 2013; ISO 10423:2009 Adoption
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- ASTM B603 Standard Specification for Drawn or Rolled Iron-Chromium-Aluminum Alloys for Electrical Heating Elements
- ASME B31.1 Power Piping - Includes Interpretations No: 47
- API SPEC 6A Specification for Wellhead and Christmas Tree Equipment - TWENTIETH EDITION; Effective April 1, 2011; Incorporating ERTA 1: January 2011; ADDENDUM 1: November 2011; ERTA 2: November 2011; ADDENDUM 2: November 2012; ADDENDUM 3: March 2013; ERTA 3: June 2013; ERTA 4: August 2013; ERTA 5: November 2013; ISO 10423:2009 Adoption
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- ASME B31.1 Power Piping - Includes Interpretations No: 47
- API SPEC 6A Specification for Wellhead and Christmas Tree Equipment - TWENTIETH EDITION; Effective April 1, 2011; Incorporating ERTA 1: January 2011; ADDENDUM 1: November 2011; ERTA 2: November 2011; ADDENDUM 2: November 2012; ADDENDUM 3: March 2013; ERTA 3: June 2013; ERTA 4: August 2013; ERTA 5: November 2013; ISO 10423:2009 Adoption
- ASME B31.1 Power Piping - Includes Interpretations No: 47
- 29.100.20
- ASTM B603 Standard Specification for Drawn or Rolled Iron-Chromium-Aluminum Alloys for Electrical Heating Elements
- ASME B31.1 Power Piping - Includes Interpretations No: 47
- API SPEC 6A Specification for Wellhead and Christmas Tree Equipment - TWENTIETH EDITION; Effective April 1, 2011; Incorporating ERTA 1: January 2011; ADDENDUM 1: November 2011; ERTA 2: November 2011; ADDENDUM 2: November 2012; ADDENDUM 3: March 2013; ERTA 3: June 2013; ERTA 4: August 2013; ERTA 5: November 2013; ISO 10423:2009 Adoption
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- ASTM B603 Standard Specification for Drawn or Rolled Iron-Chromium-Aluminum Alloys for Electrical Heating Elements
- ASTM B603 Standard Specification for Drawn or Rolled Iron-Chromium-Aluminum Alloys for Electrical Heating Elements
- ASTM B603 Standard Specification for Drawn or Rolled Iron-Chromium-Aluminum Alloys for Electrical Heating Elements
- ASME B31.1 Power Piping - Includes Interpretations No: 47
- API SPEC 6A Specification for Wellhead and Christmas Tree Equipment - TWENTIETH EDITION; Effective April 1, 2011; Incorporating ERTA 1: January 2011; ADDENDUM 1: November 2011; ERTA 2: November 2011; ADDENDUM 2: November 2012; ADDENDUM 3: March 2013; ERTA 3: June 2013; ERTA 4: August 2013; ERTA 5: November 2013; ISO 10423:2009 Adoption
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ASTM International
Standard Specification for Steel Bars, Microalloy, Hot-Wrought, Special Quality, for Subsequent Hot Forging
N A921/A921M
Annotation
This specification covers hot-wrought, special quality microalloyed carbon steel bars intended for use as hot forging stock. The bars shall be hot-wrought, as-wrought, unless thermal treatment is necessary to ensure cold shearability.
The bars shall be furnished to chemical composition only. Chemical composition is based on standard carbon steel grades modified to include microalloying elements such as columbium (niobium), vanadium, or molybdenum. Desired mechanical properties are developed in the subsequent hot forging and controlled cooling operations.
Sections and sizes of bar steel available are covered in Specification A29/A29M.
Supplementary Requirements S1 to S6 are provided for use when additional controls or requirements are desired. These shall apply only when specified on the purchase order.
The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text and tables, SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.
Unless the order specifies the applicable “M” specification designation, the material shall be furnished to the inchpound units.
Автоматический перевод:
Стандартная спецификация для кусков стали, микросплава, горячо вызванного, специального качества, для последующей горячой ковки
