ASTM A781/A781M-21 - 1.5.2021
 
1. Scope

1.1?This specification covers a group of requirements that are mandatory requirements of the following steel casting specifications issued by ASTM. If the product specification specifies different requirements, the product specification shall prevail.

ASTM
Designation


Title of Specification

A27/A27M

Steel Castings, Carbon, for General Application

A128/A128M

Steel Castings, Austenitic Manganese

A148/A148M

Steel Castings, High Strength, for Structural Purposes

A297/A297M

Steel Castings, Iron-Chromium and Iron-Chromium-Nickel, Heat Resistant, for General Application

A447/A447M

Steel Castings, Chromium-Nickel-Iron Alloy (25-12 Class), for High-Temperature Service

A494/A494M

Castings, Nickel and Nickel Alloy

A560/A560M

Castings, Chromium-Nickel Alloy

A743/A743M

Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application

A744/A744M

Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service

A747/A747M

Steel Castings, Stainless, Precipitation Hardening

A890/A890M

Castings, Iron-Chromium-Nickel-Molybdenum Corrosion-Resistant, Duplex (Austenitic/Ferritic) for General Application

A915/A915M

Steel Castings, Carbon and Alloy, Chemical Requirements Similar to Standard Wrought Grades

A958/A958M

Steel Castings, Carbon and Alloy, with Tensile Requirements, Chemical Requirements Similiar to Standard Wrought Grades

A1002

Castings, Nickel-Aluminum Ordered Alloy

1.2?This specification also covers a group of supplementary requirements that may be applied to the above specifications as indicated therein. These are provided for use when additional testing or inspection is desired and apply only when specified individually by the purchaser in the order.

1.3 The requirements of the individual material specification and this general specification shall prevail in the sequence named.

1.4?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 nonconformance with the standard.

1.5?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

 
2. Referenced Documents

A915/A915M-26

Standard Specification for Steel Castings, Carbon, Alloy, and Martensitic Stainless Chemical Requirements Similar to Standard Wrought Grades

E446-20

Standard Reference Radiographs for Steel Castings Up to 2 in. (50.8 mm) in Thickness

A958-09

Standard Specification for Steel Castings, Carbon and Alloy, with Tensile Requirements, Chemical Requirements Similar to Standard Wrought Grades

A967-05

Standard Specification for Chemical Passivation Treatments for Stainless Steel Parts

A991/A991M-25

Standard Test Method for Conducting Temperature Uniformity Surveys of Furnaces Used to Heat Treat Steel Products

A1002-16(2025)

Standard Specification for Castings, Nickel-Aluminum Ordered Alloy

A1058-19

Standard Test Methods for Mechanical Testing of Steel Products´Metric

A1067-10

Standard Specification for Test Coupons for Steel Castings

A1080-15

Standard Practice for Hot Isostatic Pressing of Steel, Stainless Steel, and Related Alloy Castings

E29-22

Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

E94-04

Standard Guide for Radiographic Examination

E125-63(2023)

Standard Reference Photographs for Magnetic Particle Indications on Ferrous Castings

E165-09

Standard Practice for Liquid Penetrant Examination for General Industry

E186-20

Standard Reference Radiographs for Heavy-Walled (2 to 412 in. (50.8 to 114 mm)) Steel Castings

E280-21

Standard Reference Radiographs for Heavy-Walled (412 to 12 in. (114 to 305 mm)) Steel Castings

A609/A609M-12(2023)

Standard Practice for Castings, Carbon, Low-Alloy, and Martensitic Stainless Steel, Ultrasonic Examination Thereof

E354-25

Standard Test Methods for Chemical Analysis of High-Temperature, Electrical, Magnetic, and Other Similar Iron, Nickel, and Cobalt Alloys

E353-25

Standard Test Methods for Chemical Analysis of Stainless, Heat-Resisting, Maraging, and Other Similar Chromium-Nickel-Iron Alloys

E340-23

Standard Practice for Macroetching Metals and Alloys

A747/A747M-23

Standard Specification for Steel Castings, Stainless, Precipitation Hardening

A751-25

Standard Test Methods and Practices for Chemical Analysis of Steel Products

A800/A800M-20

Standard Practice for Estimating Ferrite Content of Stainless Steel Castings Containing Both Ferrite and Austenite

A941-26a

Standard Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys (Includes all amendments and changes 4/15/2026).

E709-21

Standard Guide for Magnetic Particle Testing

A743/A743M-21

Standard Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application

A744/A744M-21a

Standard Specification for Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service (Includes all amendments and changes 11/10/2021).

A27/A27M-20

Standard Specification for Steel Castings, Carbon, for General Application

A128/A128M-19(2025)

Standard Specification for Steel Castings, Austenitic Manganese

A148/A148M-24

Standard Specification for Steel Castings, High Strength, for Structural Purposes

A297/A297M-21a

Standard Specification for Steel Castings, Iron-Chromium and Iron-Chromium-Nickel, Heat Resistant, for General Application (Includes all amendments and changes 9/17/2021).

A370-24a

Standard Test Methods and Definitions for Mechanical Testing of Steel Products (Includes all amendments and changes 10/29/2024).

A380-06

Standard Practice for Cleaning, Descaling, and Passivation of Stainless Steel Parts, Equipment, and Systems

A447/A447M-11(2021)

Standard Specification for Steel Castings, Chromium-Nickel-Iron Alloy (25-12 Class), for High-Temperature Service

A488/A488M-24

Standard Practice for Steel Castings, Welding, Qualifications of Procedures and Personnel

A494/A494M-26

Standard Specification for Castings, Nickel and Nickel Alloy

A560/A560M-25

Standard Specification for Castings, Chromium-Nickel Alloy

A890/A890M-26

Standard Specification for Castings, Iron-Chromium-Nickel-Molybdenum Corrosion-Resistant, Duplex (Austenitic/Ferritic) for General Application

A802-A802M-95(2001)

Standard Practice for Steel Castings, Surface Acceptance Standards, Visual Examination