Material: ASTM A27 Grade Nā1 Description: Standard Specification for Steel Castings, Carbon for General Application Group ā Ferrous Mild Steel Alloys Group Name: Ferrous Mild Steel Alloys Sub Group: ASTM A27 / A27M Steel Castings, Carbon for General Application Application: Intended for Valve, Pump, General Engineering, Automotive and Other Industries Standard: AS-AUSTRALIA