Material: ASTM A389 Grade C24 Description: Standard Specification for Steel Castings, Alloy, Specially Heat‐Treated, for Pressure‐ Containing Parts, Suitable for High‐Temperature Service Group Name: Steel Castings Sub Group: ASTM A389 / A389M Steel Castings, Alloy, Specially Heat‐Treated, for Pressure‐Containing Parts Application: Intended for Valve, Pump, General Engineering, Automotive and Other Industries Standard: AS-AUSTRALIA