Special SteelChina S136/1.2083/SUS420/4Cr13 Mould Base Plates Material Custom Mould Basis Manufacture High Hardenability Stainless Alloy Steel Plate&Sheet, Find details about China Steel Sheet, Steel from S136/1.2083/SUS420/4Cr13 Mould Base Plates Material Custom Mould Basis Manufacture High Hardenability Stainless Alloy Steel Plate&Sheet