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.
ASTM A1021/A1021M-05(2015) Referenced Document
ASTM A275/A275M Standard Test Method for Magnetic Particle Examination of Steel Forgings
ASTM A370 Standard Test Methods and Definitions for Mechanical Testing of Steel Products
ASTM A788/A788M Standard Specification for Steel Forgings, General Requirements
ASTM E112 Standard Test Methods for Determining Average Grain Size
ASTM E292 Standard Test Methods for Conducting Time-for-Rupture Notch Tension Tests of Materials
ASTM E381 Standard Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings
ASTM E562 Standard Test Method for Determining Volume Fraction by Systematic Manual Point Count
ASTM A1021/A1021M-05(2015) history
2020ASTM A1021/A1021M-20 Standard Specification for Martensitic Stainless Steel Forgings and Forging Stock for High-Temperature Service
2015ASTM A1021/A1021M-05(2015) Standard Specification for Martensitic Stainless Steel Forgings and Forging Stock for High-Temperature Service
2005ASTM A1021/A1021M-05(2010) Standard Specification for Martensitic Stainless Steel Forgings and Forging Stock for High-Temperature Service
2005ASTM A1021/A1021M-05 Standard Specification for Martensitic Stainless Steel Forgings and Forging Stock for High-Temperature Service
2002ASTM A1021-02 Standard Specification for Martensitic Stainless Steel Forgings and Forging Stock for High-Temperature Service
2001ASTM A1021-01 Standard Specification for Martensitic Stainless Steel Forgings and Forging Stock for High-Temperature Service