Material: ASTM A567 Grade HK 40 Description: Standard Specification for Iron - Base Alloy Castings, for High Strength at Elevated Temperatures Group Name: Ferrous Stainless Steel Alloys Sub Group: ASTM A 567/A 567M Iron - Base Alloy Castings, for High Strength at Elevated Temperatures Application: Intended for Valve, Pump, General Engineering, Automotive and Other Industries Standard: AS-AUSTRALIA