ASTM A1021/A1021M-05

    Historical Standard: ASTM A1021/A1021M-05 Standard Specification for Martensitic Stainless Steel Forgings and Forging Stock for High-Temperature Service

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    ASTM A1021 / A1021M

    1. Scope

    1.1 This specification covers martensitic chromium stainless steel forgings, forged bar, and forging stock for high temperature service. The mechanical properties are developed by suitable heat treatment, as indicated for each alloy.

    1.2 This specification is expressed in both inch-pound units and in SI units; however, 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 inch-pound units or SI 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 standard.

    1.3 Supplementary requirements of an optional nature are provided for use at the option of the purchaser. The supplementary requirements shall apply only when specified individually by the purchaser in the purchase order or contract.

    1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    A275/A275M Practice for Magnetic Particle Examination of Steel Forgings

    A370 Test Methods and Definitions for Mechanical Testing of Steel Products

    A788/A788M Specification for Steel Forgings, General Requirements

    E112 Test Methods for Determining Average Grain Size

    E292 Test Methods for Conducting Time-for-Rupture Notch Tension Tests of Materials

    E381 Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings

    E562 Test Method for Determining Volume Fraction by Systematic Manual Point Count


    ICS Code

    ICS Number Code 77.140.85 (Iron and steel forgings)

    UNSPSC Code

    UNSPSC Code 31132600(Stainless steel forgings)


    DOI: 10.1520/A1021_A1021M-05

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