SUS420J1, DIN-EN 1.4021, X20Cr13 steelmax2019-01-06T12:03:58+09:003월 23rd, 2018| JIS SUS420J1 인장강도 690 MPa, minimum–QT Condition (R-Bar) DIN EN 1.4021 QT700 : 700~850 MPa (R-Bar) DIN EN 1.4021 QT800 : 800~950 MPa (R-Bar)