机械结构用不锈钢焊接钢管(GB/T12700-1991)
(1)尺寸规格和允许偏差
机械结构用不锈钢焊接钢管的尺寸规格和允许偏差
名 称 |
说 明 |
钢管外径和壁厚尺寸规格 |
外径和壁厚按表6-110的规定(壁厚0.3mm、0.4mm不适用GBT12770---1991) |
钢管尺寸允许偏差 |
外径和壁厚允许偏差按表6-111的规定 |
(2)牌号和化学成分
机械结构用不锈钢焊接钢管的牌号和化学成分
牌 号 |
化学成分(质量分数)(%) |
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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