#Automotive B420CL,B420CL steel plate,B420CL steel sheet,B420CL steel price,B420CL steel plate manufacturer,B420CL steel sheet manufacturer
B420CL thickness allowable deviation should be consistent with Q / BQB 301 high precision (PT.B) provisions,B420CL good cold formability for automotive roll forming wheel and spoke network. B420CL steel mechanical property Grade Tensile test Yield strength Tensile strength Yield ratio Elongation after fracture A L0=5.65√S0 (%) 180°Bending Test b Diameter B420CL ≥290 420-520 -- ≥28 0.5a B420CL steel chemical composition Grade Chemical composition(Heat analysis)% C Si Mn P S Alt B420CL ≤0.12 ≤0.30 ≤1.50 ≤0.030 ≤0.025 ≥0.010 B420CL application : B420CL steel plate, steel strip is a kind of hot-rolled picked steel trip for automotive structure steel with welding performance, and some stamping performance. B420CL steel plate, st...