35CrMo--碳 C ：0.32～0.40, 矽 Si：0.17～0.37 ,錳 Mn：0.40～0.70, 硫 S ：允許殘餘含量≤0.035 磷 P ：允許殘餘含量≤0.035 , 鉻 Cr：0.80～1.10,鎳 Ni：允許殘餘含量≤0.30.銅 Cu：允許殘餘含量≤0.30..鉬 Mo：0.15～0.25A3鋼就是現在的Q235碳素結構鋼，Q235分A、B、C、D四級(GB/T 700-2006)Q235A級含 C ≤0.22% Mn ≤1.4% Si ≤0.35% S ≤0.050 P ≤0.045Q235B級含 C ≤0.20% Mn ≤1.4% Si ≤0.35% S ≤0.045 P ≤0.045Q235C級含 C ≤0.17% Mn ≤1.4% Si ≤0.35% S ≤0.040 P ≤0.040Q235D級含 C ≤0.17% Mn ≤1.4% Si ≤0.35% S ≤0.035 P ≤0.035詳細的額可以