2Cr13/420/SUS420J1 Stainless Steel 1,high hardness after quenching 2,errosion ... Special Steel Trading Co., Ltd.Stainless Steel Steel Sheet AISI 420/UNS G42000/JIS SUS 4720J1DIN X20Cr13 Steel Sheet Dimensions:1 ... Steel Trading Co., Ltd.stainless steel steel sheet1, Grade: AISI 420/UNS G42000/JIS SUS 4720J1DIN X20Cr13 2, Chemical composition CSiMnPSCr0 ...