● 標(biāo)準 Standard    GB6479-2013  主要鋼級牌號：20、16Mn ● 用途 Uses     用于化肥設(shè)備上輸送高溫高壓流體管道

● 化學(xué)成份、機械性能 Chemical composition 牌號 Grade 化學(xué)成分 Chemical composition, % C Si Mn Cr Mo V W Nb Ni P S 10 0.07 ~0.14 0.17 ~0.37 0.35 ~0.65 - - - - - - ≤0.030 ≤0.030 20 0.17 ~0.24 0.17 ~0.37 0.35 ~0.65 - - - - - - ≤0.030 ≤0.030 16Mn 0.12 ~0.20 0.20 ~0.60 1.20 ~1.60 - - - - - - ≤0.030 ≤0.030 15MnV 0.12 ~0.18 0.20 ~0.60 1.20 ~1.60 - - 0.04 ~0.12 - - - ≤0.030 ≤0.030 10MoWVNb 0.07 ~0.13 0.50 ~0.80 0.50 ~0.80 - 0.60 ~0.90 0.30 ~0.50 0.50 ~0.90 0.06 ~0.12 - ≤0.030 ≤0.030 12CrMo 0.08 ~0.15 0.17 ~0.37 0.40 ~0.70 0.40 ~0.70 0.40 ~0.55 　 　 　 　 ≤0.030 ≤0.030 15CrMo 0.12 ~0.18 0.17 ~0.37 0.40 ~0.70 0.80 ~1.10 0.40 ~0.55 - - - - ≤0.030 ≤0.030 1Cr5Mo ≤ 0.15 ≤ 0.50 ≤ 0.60 4.00 ~6.00 0.40 ~0.60 - - - ≤ 0.60 ≤0.030 ≤0.030 12Cr2Mo 0.08 ~0.15 ≤ 0.50 0.40 ~0.70 2.0 ~2.50 0.90 ~1.20 - - - - ≤0.030 ≤0.030 12SiMoVNb 0.08 ~0.14 0.50 ~0.80 0.60 ~0.90 - 0.90 ~1.10 0.30 ~0.50 - 0.04 ~0.08 - ≤0.030 ≤0.030 牌號 Grade 抗拉強度 Tensile strength, Mpa 屈服點 Yield point, Mpa 延伸率 Elongation min, % 10 335~490 205 24 20 410~550 245 24 16Mn 490~670 320 21 15MnV 510~690 350 19 12CrMo 410~560 205 21 15CrMo 440~640 235 21