结构用碳素钢、合金钢中日JIS-GB材料对照表 化学成分% 机械性能 硬度 化学成分% 机械性能 硬度 备国标JIS 牌号JIS C Si Mn Cr Ni 其它 P S σb σy δ ψ ak N/mm.mm % N/mm.mm HB HRC 备注 标准 牌号GB C Si Mn Cr Ni 其它 P S σb σs δ5 ψ Aku N/mm.mm % J HB HRC 注 G4051 S15C 0.13-0.18 0.15-0.35 0.30-0.60 ≤0.2 ≤0.2 Cu：≤0.30 ≤0.03 ≤0.035 ≥370 ≥230 ≥30 109-167 GB/T699 15 0.12-0.18 0.17-0.37 0.35-0.65 ≤0.25 ≤0.30 ≤0.035 ≤0.035 ≥375 ≥225 ≥27 ≥55 ≥71 ≥143 G4051 S20C 0.18-0.23 0.15-0.35 0.30-0.60 ≤0.2 ≤0.2 Cu：≤0.30 ≤0.03 ≤0.035 ≥400 ≥240 ≥28 116-174 GB/T699 20 0.17-0.23 0.17-0.37 0.35-0.65 ≤0.25 ≤0.30 ≤0.035 ≤0.035 ≥410 ≥245 ≥25 ≥55 ≥156 G4051 S25C 0.22-0.28 0.15-0.35 0.30-0.60 ≤0.2 ≤0.2 Cu：≤0.30 ≤0.03 ≤0.035 ≥440 ≥260 ≥27 123-183 GB/T699 25 0.22-0.29 0.17-0.37 0.50-0.80 ≤0.25 ≤0.30 ≤0.035 ≤0.035 ≥450 ≥275 ≥23 ≥50 ≥170 G4051 S30C 0.27-0.33 0.15-0.35 0.60-0.90 ≤0.2 ≤0.2 Cu：≤0.30 ≤0.03 ≤0.035 ≥470 ≥280 ≥25 137-197 GB/T699 30 0.27-0.34 0.17-0.37 0.50-0.80 ≤0.25 ≤0.30 ≤0.035 ≤0.035 ≥490 ≥295 ≥21 ≥50 ≥63 ≥179 G4051 S35C 0.32-0.38 0.15-0.35 0.60-0.90 ≤0.2 ≤0.2 Cu：≤0.30 ≤0.03 ≤0.035 ≥510 ≥300 ≥23 149-207 GB/T699 35 0.32-0.39 0.17-0.37 0.50-0.80 ≤0.25 ≤0.30 ≤0.035 ≤0.035 ≥530 ≥315 ≥20 ≥45 ≥55 ≥197 G4051 S45C 0.42-0.48 0.15-0.35 0.60-0.90 ≤0.2 ≤0.2 Cu：≤0.30 ≤0.03 ≤0.035 ≥560 ≥340 ≥20 167-229 GB/T699 45 0.42-0.50 0.17-0.37 0.50-0.80 ≤0.25 ≤0.30 ≤0.035 ≤0.035 ≥600 ≥355 ≥16 ≥40 ≥39 ≥229 G4051 S55C 0.52-0.58 0.15-0.35 0.60-0.90 ≤0.2 ≤0.2 Cu：≤0.30 ≤0.03 ≤0.035 ≥640 ≥390 ≥15 183-255 GB/T699 55 0.52-0.60 0.17-0.37 0.50-0.80 ≤0.25 ≤0.30 ≤0.035 ≤0.035 ≥645 ≥380 ≥13 ≥35 ≥55 ≥255 G4102 SNC 236 0.32-0.40 0.15-0.35 0.50-0.80 0.50-0.90 1.00-1.50 Cu：≤0.30 ≤0.03 ≤0.03 ≥740 ≥590 ≥22 ≥50 217-277 QT GB/T3077 40CrNi 0.37-0.44 0.17-0.37 0.50-0.80 0.45-0.75 1.0-1.4 ≤0.035 ≤0.035 ≥980 ≥785 ≥10 ≥45 ≥241 G4102 SNC 631 0.27-0.35 0.15-0.35 0.35-0.65 0.60-1.0 2.5-3.00 Cu：≤0.30 ≤0.03 ≤0.03 ≥830 ≥685 ≥18 ≥50 248-302 QT GB/T3077 30CrNi3 0.27-0.33 0.17-0.37 0.30-0.60 0.60-0.90 2.75-3.15 ≤0.035 ≤0.035 ≥980 ≥785 ≥9 ≥45 ≥63 ≥241 G4102 SNC 836 0.32-0.40 0.15-0.35 0.35-0.65 0.60-1.0 3.00-3.50 Cu：≤0.30 ≤0.03 ≤0.03 ≥930 ≥785 ≥12 ≥45 269-321 QT GB/T3077 37CrNi3 0.34-0.41 0.17-0.37 0.30-0.60 1.2-1.6 3.0-3.5 ≤0.035 ≤0.035 ≥1130 ≥980 ≥10 ≥50 ≥47 ≥269 G4103 SNCM431 0.27-0.35 0.15-0.35 0.60-0.90 0.60-1.0 1.60-2.00 Mo0.15-0.3;Cu≤0.3 ≤0.03 ≤0.03 ≥830 ≥685 ≥20 ≥55 248-302 QT GB/T3077 30CrNi2MoVA 0.27-0.34 0.24-0.40 0.30-0.60 0.60-0.90 2.0-2.5 Mo:0.2-0.3 ≤0.035 ≤0.030 ≥1110 ≥1035 ≥17 ≥65 ak≥17.6 ≥269 G4103 SNCM240 0.38-0.43 0.15-0.35 0.70-1.0 0.40-0.65 0.40-0.70 Mo0.15-0.3;Cu≤0.3 ≤0.03 ≤0.03 ≥880 ≥785 ≥17 ≥50 255-311 QT GB/T3077 40CrMnMoA 0.37-0.45 0.17-0.37 0.90-1.2 0.9-1.2 1.25-1.65 Mo:0.2-0.3 ≤0.035 ≤0.035 ≥980 ≥785 ≥10 ≥45 ≥63 ≥217 G4103 SNCM439 0.36-0.43 0.15-0.35 0.60-0.90 0.60-1.0 1.60-2.00 Mo0.15-0.3;Cu≤0.3 ≤0.03 ≤0.03 ≥980 ≥885 ≥16 ≥45 293-352 QT GB/T3077 40CrNiMoA 0.37-0.44 0.17-0.37 0.50-0.80 0.6-0.9 Mo:0.15-0.25 ≤0.035 ≤0.035 ≥980 ≥835 ≥12 ≥55 ≥78 ≥269 G4103 SNCM220 0.17-0.23 0.15-0.35 0.60-0.90 0.40-0.65 0.40-0.70 Mo0.15-0.3;Cu≤0.3 ≤0.03 ≤0.03 ≥830 ≥17 ≥40 248-341 QT GB/T3077 20CrNiMo 0.17-0.23 0.17-0.37 0.60-0.95 0.40-0.70 0.35-0.75 Mo:0.2-0.3 ≤0.035 ≤0.035 ≥980 ≥785 ≥9 ≥40 ≥47 ≥197 G4103 SNCM415 0.12-0.18 0.15-0.35 0.40-0.70 0.40-0.65 1.60-2.00 Mo0.15-0.3;Cu≤0.3 ≤0.03 ≤0.03 ≥880 ≥16 ≥45 255-341 QT GB/T3077 12CrNi2 0.10-0.17 0.17-0.37 0.30-0.60 0.60-0.90 1.50-1.90 ≤0.035 ≤0.035 ≥785 ≥590 ≥12 ≥50 ≥63 ≥207 Mo0.2-0.3 G4103 SNCM420 0.17-0.23 0.15-0.35 0.40-0.70 0.40-0.65 1.60-2.00 Mo0.15-0.3;Cu≤0.3 ≤0.03 ≤0.03 ≥980 ≥15 ≥40 293-375 QT GB/T3077 30CrNi2MoVA 0.27-0.34 0.24-0.40 0.30-0.60 0.60-0.90 2.0-2.5 V0.15-0.3 ≤0.035 ≤0.030 ≥1110 ≥1035 ≥17 ≥65 ak≥17.6 ≥269
结构用碳素钢、合金钢中日JIS-GB材料对照表
