BS 6479:1984 pdf free.Method for determination and verification of the effective depth of carburized and hardened cases in steels. BS 6479 describes a method for determining and verifying the effective depth of carburized and hardened cases in steels. It is applicable to: a) carburized cases including carbo-nitrided cases in steels, the depth of which is greater than 0.3 mm; h)...