Material: AISI 1138 Description: Standard Specification For Carbon Steel Compositions For Forging To Hot-Rolled And Cold- Finished Steel Group Name: Ferrous Mild Steel Alloys Sub Group: AISI 1138 Carbon Steel Compositions For Forging To Hot-Rolled And Cold-Finished Steel Application: Intended for Valve, Pump, General Engineering, Automotive and Other Industries Standard: AISI-USA