1.1 This specification covers normalized and tempered, and quenched and tempered, carbon and alloy steel forged or rolled rings for reduction gears. 1.2 Several grades and classes of steel are covered as follows: This specification deals with normalized and tempered, and quenched and tempered, carbon and alloy steel forged or rolled rings for reduction gears. The grades and classes of steels covered here are: Grade 1, Classes A and B, and Grade 2, Classes C and