精密钢管常用牌号化学成份
标准 |
牌号 |
化学成份% |
|
|
碳 |
硅 |
锰 |
硫 |
磷 |
铬 |
|
|
C |
Si |
Mn |
S |
P |
Cr |
GB/T699 |
10# |
0.07~0.13 |
0.17~0.37 |
0.35~0.65 |
≤0.035 |
≤0.035 |
|
GB/T3639-2000 |
20# |
0.17~0.23 |
0.17~0.37 |
0.35~0.65 |
≤0.035 |
≤0.035 |
|
GB3077-88 |
35# |
0.32~0.39 |
0.17~0.37 |
0.35~0.65 |
≤0.035 |
≤0.035 |
|
|
45# |
0.42~0.50 |
0.17~0.37 |
0.50~0.80 |
≤0.035 |
≤0.035 |
|
|
40cr |
0.37~0.44 |
0.17~0.37 |
0.50~0.80 |
≤0.035 |
≤0.035 |
0.08~1.10 |
|
25Mn |
0.22~0.29 |
0.17~0.37 |
0.70~1.00 |
≤0.035 |
≤0.035 |
≤0.25 |
|
37Mn5 |
0.30~0.39 |
0.15~0.30 |
1.20~1.50 |
≤0.015 |
≤0.020 |
|
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