... For ordinary structure, auto mechanical structureMain Steel Grade10,20,35,45,16Mn,1020,1045,1541,E275,E315,34CrMo4,42CrMo4,STKM13A,STKM13B ... .65≤0.040////EN10297-1E275≤0.21≤0.35≤1.40≤0.030////E315≤0.21≤0.30≤1.50≤0 ... .035//0.15~0.300.90~1.2042CrMo40.38~0.45≤0.400.60~0.90≤0.035//0.15~0 ...