Suzhou Kaitianfu Machinery Co., Ltd

1. Common base material and chemical composition
Common base material and chemical composition（wt.%）
Mat
Type C Si Mn P S Cr Mo Ni Cu Nb Al Ti Co Fe
4130 0.28-0.33 0.15-0.35 0.4-0.6 ≤0.025 ≤0.025 0.8-1.1 0.15-0.25 ≤0.03 ≤0.03 Bal
4140 0.38-0.45 0.15-0.35 0.75-1.0 ≤0.025 ≤0.025 0.8-1.1 0.15-0.25 Bal
410 0.08-0.15 ≤1.0 ≤1.0 ≤0.025 ≤0.025 11.5-13.5 ≤0.75 Bal