Medium Carbon Steel
ASTM A288 Class 5 Quenched and TemperedMedium Carbon Steel
ASTM A471 Class 4 Heat-TreatedNickel Chromium Molybdenum Steel
ASTM A471 Class 14 Heat-TreatedChromium Molybdenum Steel
ASTM A471 Class 13 Heat-TreatedChromium Molybdenum Steel
ASTM A471 Class 3 Heat-Treated