Material: ASTM A217 Grade WC4 Description: Standard Specification for Steel Castings, Martensitic Stainless and Alloy, for Pressure‐ Containing Parts, Suitable for High‐Temperature Service Group Name: Ferrous Mild Steel Alloys Sub Group: A217 / A217M Steel Castings, Martensitic Stainless and Alloy, for Pressure‐Containing Parts, Suitable for High‐Temperature Service Application: Intended for Valve, Pump, General Engineering, Automotive and Other Industries Grade Standard: AS-AUSTRALIA