Historical
AGMA 923-C22
Metallurgical Specifications for Steel Gearing
Metallurgical quality characteristics for use in conjunction with AGMA gear rating standards are recommended. Three different metallurgical quality grades: grade 1, grade 2, and grade 3 are defined. Characteristics include raw material, heat treatment, post heat treat processing, and associated inspections. Gear design and rating, case depth, allowable stress numbers, and quality control sampling plans are not included.
American Gear Manufacturers Association [agma]