ASTM A788/A788M : 08

Standard Specification for Steel Forgings, General Requirements

Standard Details

1.1 This specification covers a group of common requirements that, unless otherwise specified in the individual product specification, shall apply to steel forgings under any of the following specifications issued by ASTM:

ASTM Designation	Title
A 266/A 266M	Carbon Steel Forgings for Pressure Vessel Components
A 288	Carbon and Alloy Steel Forgings for Magnetic Retaining Rings for Turbine Generators
A 289/A 289M	Alloy Steel Forgings for Nonmagnetic Retaining Rings for Generators
A 290/A 290M	Carbon and Alloy Steel Forgings for Rings for Reduction Gears
A 291/A 291M	Steel Forgings, Carbon and Alloy, for Pinions, Gears, and Shafts for Reduction Gears
A 336/A 336M	Alloy Steel Forgings for Pressure and High-Temperature Parts
A 372/A 372M	Carbon and Alloy Steel Forgings for Thin-Walled Pressure Vessels
A 427	Wrought Alloy Steel Rolls for Cold and Hot Reduction
A 469/A 469M	Vacuum-Treated Steel Forgings for Generator Rotors
A 470/A 470M	Vacuum-Treated Carbon and Alloy Steel Forgings for Turbine Rotors and Shafts
A 471	Vacuum-Treated Alloy Steel Forgings for Turbine Rotor Disks and Wheels
A 508/A 508M	Quenched and Tempered Vacuum-Treated Carbon and Alloy Steel Forgings for Pressure Vessels
A 521	Steel, Closed-Impression Die Forgings for General Industrial Use
A 541/A 541M	Quenched and Tempered Carbon and Alloy Steel Forgings for Pressure Vessel Components
A 579/A 579M	Superstrength Alloy Steel Forgings
A 592/A 592M	High-Strength Quenched and Tempered Low-Alloy Steel Forged Fittings and Parts for Pressure Vessels
A 649/A 649M	Forged Steel Rolls Used for Corrugating Paper Machinery
A 668/A 668M	Steel Forgings, Carbon and Alloy, for General Industrial Use
A 723/A 723M	Alloy Steel Forgings for High-Strength Pressure Component Application
A 765/A 765M	Carbon Steel and Low-Alloy Steel Pressure-Vessel-Component Forgings with Mandatory Toughness Requirements
A 768/A 768M	Vacuum-Treated 12 % Chromium Alloy Steel Forgings for Turbine Rotors and Shafts
A 837/A 837M	Steel Forgings, Alloy, for Carburizing Applications
A 859/A 859M	Age-Hardening Alloy Steel Forgings for Pressure Vessel Components
A 891	Precipitation Hardening Iron Base Superalloy Forgings for Turbine Rotor Disks and Wheels
A 909	Steel Forgings, Microalloy, for General Industrial Use
A 940	Vacuum Treated Steel Forgings, Alloy, Differentially Heat Treated, for Turbine Rotors
A 965/A 965M	Steel Forgings, Austenitic, for Pressure and High Temperature Parts
A 983/A 983M	Specification for Continous Grain Flow Forged Carbon and Alloy Steel Crankshafts for Medium Speed Diesel Engines
A 1021/A 1021M	Martensitic Stainless Steel Forgings and Forging Stock for High-Temperature Service

1.2 In case of conflict in requirements, the requirements of the individual product specifications shall prevail over those of this specification.

1.3 The purchaser may specify additional requirements (see 4.2.3) that do not negate any of the provisions of either this specification or of the individual product specifications. The acceptance of any such additional requirements shall be dependent on negotiations with the supplier and must be included in the order.

1.4 If, by agreement, forgings are to be supplied in a partially completed condition, that is, all of the provisions of the product specification have not been filled, then the material marking (see Section 17) and certification (see Section 16) shall reflect the extent to which the product specification requirements have been met.

1.5 As noted in the Certification Section (16), the number and year date of this specification, as well as that of the product specification, are required to be included in the product certification.

1.6 When the SI version of a product specification is required by the purchase order, Specification A 788/A 788M shall be used.

1.7 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 non-conformance with the standard.

1.8 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.