MIL-S-83030A, MILITARY SPECIFICATION, STEEL ALLOY, CARBURIZING, BARS AND BILLETS, STEEL NICKEL-CHROMIUM (3310, 3316, AND 9310), PREMIUM QUALITY (28 AUG 1968) [S/S BY SAE-AMS6250, SAE-AMS6260 AND SAE-AMS6317]., This specification covers requirements for nickel-chromium and nickel-chromium-molybdenum steels intended for carburizing use in applications requiring restrictive quality.