... date Material: Forged Carbon Steel, Stainless Steel , Duplex Stainless Steel , Low Alloy Steel( A105,LF2,F6a,F304,F316,321,F22,F51,F11 ... .Test block from the product for mechanical testing is shipped with your product. Work Shop: Products: Packing: Certification: A105,LF2,F6a ... ,17-4PH,F60,4140,4340,4130,410,310,320 forged round bar