Cold-rolled, hot-rolled steel coil for raw material, after acid pickling to remove oxide skin in cold rolling

Chemical composition (melting analysis)%

C  0.1

Si   0.5

Mn  1.0

P  0.1

S  0.030

Al min  0.015

Mechanical properties (Mpa).

Yield point  260-320

Tensile strength   360-440

Elongation at break   29

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