15CrMoG 化学成分% |
||||||
C |
Si |
Mn |
P |
S |
Cr |
Mo |
0.12~0.18 |
0.15~0.40 |
0.40~0.70 |
≤0.025 |
≤0.025 |
0.80~1.20 |
0.45~0.60 |
合金管尺寸及允许偏差
偏差等级 |
标准化外径允许偏差 |
D1 |
±1.5%,最小±0.75 mm |
D2 |
±1.0%。最小±0.50 mm |
D3 |
±0.75%.最小±0.30 mm |
D4 |
±0.50%。最小±0.10 mm |