1.1 This specification2 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     A266/A266M Carbon Steel Forgings for Pressure Vessel Components A288 Carbon and Alloy Steel Forgings for Magnetic Retaining Rings for Turbine Generators A289/A289M Alloy Steel Forgings for Nonmagnetic Retaining Rings for Generators A290/A290M Carbon and Alloy Steel Forgings for Rings for Reduction Gears A291/A291M Steel Forgings, Carbon and Alloy, for Pinions, Gears, and Shafts for Reduction Gears A336/A336M Alloy Steel Forgings for Pressure and High-Temperature Parts A372/A372M Carbon and Alloy Steel Forgings for Thin-Walled Pressure Vessels A427/A427M Wrought Alloy Steel Rolls for Cold and Hot Reduction A469/A469M Vacuum-Treated Steel Forgings for Generator Rotors A470/A470M Vacuum-Treated Carbon and Alloy Steel Forgings for Turbine Rotors and Shafts A471/A471M Vacuum-Treated Alloy Steel Forgings for Turbine Rotor Disks and Wheels A504/A504M Wrought Carbon Steel Wheels A508/A508M Quenched and Tempered Vacuum-Treated Carbon and Alloy Steel Forgings for Pressure Vessels A521/A521M Steel, Closed-Impression Die Forgings for General Industrial Use A541/A541M Quenched and Tempered Carbon and Alloy Steel Forgings for Pressure Vessel Components A579/A579M Superstrength Alloy Steel Forgings A592/A592M High-Strength Quenched and Tempered Low-Alloy Steel Forged Parts for Pressure Vessels A646/A646M Premium Quality Alloy Steel Blooms and Billets for Aircraft and Aerospace Forgings A649/A649M Forged Steel Rolls Used for Corrugating Paper Machinery A668/A668M Steel Forgings, Carbon and Alloy, for General Industrial Use A711/A711M Steel Forging Stock A723/A723M Alloy Steel Forgings for High-Strength Pressure Component Application