機(jī)械結(jié)構(gòu)用不銹鋼焊接鋼管（GB／T12700-1991）
(1)尺寸規(guī)格和允許偏差
機(jī)械結(jié)構(gòu)用不銹鋼焊接鋼管的尺寸規(guī)格和允許偏差
|
名 稱 |
說(shuō) 明 |
|
鋼管外徑和壁厚尺寸規(guī)格 |
外徑和壁厚按表6-110的規(guī)定(壁厚0.3mm、0.4mm不適用GBT12770---1991) |
|
鋼管尺寸允許偏差 |
外徑和壁厚允許偏差按表6-111的規(guī)定 |
(2)牌號(hào)和化學(xué)成分
機(jī)械結(jié)構(gòu)用不銹鋼焊接鋼管的牌號(hào)和化學(xué)成分
|
牌 號(hào) |
化學(xué)成分(質(zhì)量分?jǐn)?shù))(％) |
|
C |
Si |
Mn |
P |
S |
Ni |
Cr |
其 他 |
|
00cr19Ni11 |
≤0.030 |
≤1.00 |
≤2.00 |
≤0.035 |
≤0.030 |
9.00-13.00 |
18.00-20.00 |
|
|
00Cr17Ni14Mo2 |
≤0.030 |
≤1.00 |
≤2.00 |
≤0.035 |
≤0.030 |
12.00-15.00 |
16.00-18.00 |
Mo2.00-3.00 |
|
0Cr19Ni9 |
≤0.08 |
≤1.00 |
≤2.00 |
≤0.035 |
≤0.030 |
8.00-10.00 |
18.00-20.00 |
|
|
1Cr18Ni9 |
≤0.15 |
≤1.00 |
≤2.00 |
≤0.035 |
≤0.030 |
8.00-10.00 |
17.00-19.00 |
|
|
(1Cr18Ni9Ti) |
≤0.12 |
≤1.00 |
≤2.00 |
≤0.035 |
≤0.030 |
8.00-11.00 |
17.00-19.00 |
Ti5(C％-0.02)-0.80 |
|
0Cr17Ni12Mo2 |
≤0.08 |
≤1.00 |
≤2.00 |
≤0.035 |
≤0.030 |
10.00-14.00 |
16.00-18.00 |
Mo2.00-3.00 |
|
0Cr18Ni11NB |
≤0.08 |
≤1.00 |
≤2.00 |
≤0.035 |
≤0.030 |
9.00-13.00 |
17.00-19.00 |
Nb≥10×C％ |
|
0Cr25Ni20 |
≤0.08 |
≤1.50 |
≤2.00 |
≤0.035 |
≤0.030 |
19.00-22.00 |
24.00-26.00 |
|
|
1Cr17 |
≤0.12 |
≤0.75 |
≤1.00 |
≤0.035 |
≤0.030 |
|
16.00-19.00 |
Ti或Nb0.10-1.00 |
|
1Cr15 |
≤0.12 |
≤1.00 |
≤1.00 |
≤0.035 |
≤0.030 |
|
16.00-18.00 |
|
|
0Cr13 |
≤0.08 |
≤1.00 |
≤1.00 |
≤0.035 |
≤0.030 |
|
11.50-13.50 |
|
|
1Cr13 |
≤0.15 |
≤1.00 |
≤1.00 |
≤0.035 |
≤0.030 |
|
11.50-13.50 |
|
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