A333的化学成分 标准 牌号 化学成分(%) C Si Mn P S Cr Ni Cu Mo V Al ASTM A333 Gr.1 ≤0.30 0.40~1.06 ≤0.025 ≤0.025 Gr.3 ≤0.19 0.18~0.37 0.31~0.64 ≤0.025 ≤0.025 3.18-3.82 Gr.4 ≤0.12 0.18~0.37 0.50~1.05 ≤0.025 ≤0.025 0.44-1.01 0.47-0.98 0.4-0.57 0.04-0.30 Gr.6 ≤0.30 ≥0.10 0.29~1.06 ≤0.025 ≤0.025 Gr.7 ≤0.19 0.13~0.32 ≤0.90 ≤0.025 ≤0.025 2.03-2.75 Gr.8 ≤0.13 0.13~0.32 ≤0.90 ≤0.025 ≤0.025 8.40-9.60 Gr.9 ≤0.20 0.40~1.06 ≤0.025 ≤0.025 1.60-2.24 0.75-1.25 Gr.10 ≤0.20 0.10~0.35 1.15~1.50 ≤0.030 ≤0.015 ≤0.25 ≤0.015 ≤0.50 ≤0.12 ≤0.06 Gr.11 ≤0.10 0.35 ≤0.6 ≤0.025 ≤0.025 35.0-37.0 ≤0.50