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breed classify
semi-killed steel OR killed steel
yield strength
SS400/235-260MPa S355JR/335-360MPa
strength of extension
SS400/420MPa S355JR/485MPa
elongation
SS400/26min S355JR/26min
carbon content
SS400/C(0.12-0.20)% S355JR/C(0.12-0.20)%
manganese content
SS400/Mn(0.45)% S355JR/Mn(1.35)%
silicon content
SS400/Si(≥0.19)% S355JR/Si(≥0.002)%
phosphorus content
SS400/P(0.03)% S355JR/P(0.012)%
sulphur content
SS400/S(0.02)% S355JR/S(0.013)%
manufacturing technique
Hot rolled(elementary) Can be processed again repeatedly