5310高压锅炉管性能指标一览表
钢号 屈服强度 抗拉强度 延伸率% 冲击(J)10*10 晶粒度 硬度 组织 20G ≥245MPa 410~550MPa L≥24 T≥22 L≥40 T≥27 4~10级 F+P SA-106B ≥240MPa ≥415MPa L≥30 L≥35 ≥4级 123-187 F+P SA-106C ≥275MPa ≥485MPa L≥30 L≥35 ≥4级 147-187 F+P SA-210C ≥275MPa ≥485MPa L≥30 4~9级 ≤179HBW F+P 15CrMoG ≥295MPa 440~640MPa L≥21 T≥19 L≥40 T≥27 4~10级 F+P(B) 12Cr1MoVG ≥255MPa 470~640MPa L≥21 T≥19 L≥40 T≥27 4~10级 F+P+B P11 ≥205MPa ≥425MPa L≥30 T≥27 4~10级 125-179 F+P+B P12 ≥220MPa ≥415MPa T≥30 T≥35 4~10级 125-179 F+P(B) P22 ≥205MPa ≥425MPa L≥22 T≥27 4~10级 125-179 F+P(B) P91 ≥415MPa 595~830MPa T≥20 T≥40 4~10级 ≤250HB或≤25HRC F+P(B) 熔炼和化学成分控制要求:
钢号 C Mn Si Cr Mo Cu S P Al V Ni 20G 0.17~0.24 0.35~0.65 0.17~0.37 ≤0.25 ≤0.15 ≤0.20 ≤0.02 ≤0.025 ≤0.01 ≤0.08 ≤0.25 SA-106B 0.20~0.25 0.65~1.0 0.17~0.35 ≤0.25 ≤0.15 ≤0.20 ≤0.015 ≤0.02 ≤0.02 ≤0.08 ≤0.25 SA-106C 0.20~0.25 0.65~1.0 0.17~0.35 ≤0.25 ≤0.15 ≤0.20 ≤0.015 ≤0.02 ≤0.02 ≤0.08 ≤0.25 15CrMoG 0.12~0.18 0.40~0.70 0.17~0.37 0.90~1.10 0.40~0.55 ≤0.20 ≤0.02 ≤0.025 ≤0.02 … ≤0.30 12Cr1MoVG 0.10~0.15 0.50~0.70 0.17~0.37 0.90~1.20 0.25~0.35 ≤0.20 ≤0.015 ≤0.02 0.005~0.040 0.2~0.3 ≤0.25 P11 0.07~0.15 0.30~0.60 0.50~1.00 1.00~1.50 0.44~0.65 ≤0.20 ≤0.02 ≤0.025 ≤0.025 … ≤0.30 P12 0.07~0.15 0.35~0.61 ≤0.50 0.80~1.25 0.44~0.65 0.05~0.15 0.05~0.15 0.05~0.15 0.05~0.15 0.05~0.15 0.05~0.15 P22 0.07~0.15 0.30~0.60 0.20~0.50 1.90~2.60 0.87~1.13 ≤0.20 ≤0.02 ≤0.025 ≤0.025 ≤0.09 ≤0.33 P91 0.08~0.12 0.30~0.60 0.20~0.50 8.0~9.5 0.85~1.05 ≤0.20 ≤0.01 ≤0.020 ≤0.01 0.18~0.25 ≤0.40