精密無縫鋼管機械性能和化學成份-有萬正鋼管友情提供
機械性能：
|
牌號 |
交貨狀態 |
|
BK |
BKW |
BKS |
NBK |
|
抗拉強度(MPa) |
伸長率(%) |
抗拉強度(MPa) |
伸長率(%) |
抗拉強度(MPa) |
伸長率(%) |
抗拉強度(MPa) |
伸長率(%) |
屈服強度(MPa) |
|
≥ |
|
10 |
410 |
6 |
375 |
10 |
335 |
12 |
335 |
24 |
|
|
20 |
510 |
5 |
450 |
8 |
430 |
10 |
410 |
20 |
|
|
35 |
590 |
4 |
550 |
6 |
520 |
8 |
530 |
17 |
|
|
45 |
645 |
4 |
630 |
5 |
610 |
7 |
600 |
14 |
|
|
40Cr |
≥784 |
≥12 |
|
|
|
|
|
|
|
|
37Mn5 |
≥784 |
≥12 |
|
|
|
|
|
|
|
化學（xué）成份：
|
牌號（hào） |
化學成分% |
|
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 |
|
精密機械用精密無縫鋼（gāng）管
標準
GB/T3639------中國國家（jiā）標（biāo）準
|
