无锡精密钢管（40cr材质精密光亮管63*5化学成份）
精密钢管
：
牌号
|
化学成分%
|
C
|
Si
|
Mn
|
S
|
P
|
Cr
|
10
|
0.07-0.13
|
0.17-0.37
|
0.35-0.65
|
≤0.035
|
≤0.035
|
|
20
|
0.17-0.23
|
0.17-0.37
|
0.35-0.65
|
≤0.035
|
≤0.035
|
|
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
|
|
精密钢管的化学成分有碳C、硅Si、锰Mn、硫S、磷P、铬Cr。
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