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|
尺寸公差 | |||
|
外径(D) |
≤159 |
%26gt;159 | |
|
外径允许偏差 |
±1.0%(最小为±0.5mm) |
±1.25% | |
|
壁厚(S) |
≤20 |
S%26gt;20 |
D≥351 |
|
壁厚允许偏差 |
+15%,-10%(最小为+0.45mm,-0.30mm) |
±10% |
±15% |
|
纵向力学性能 | ||||
|
类别 |
纲级 |
抗拉强度(MPa) |
屈服点(MPa)≥ |
延伸率（%）≥ |
|
碳钢和碳锰钢 |
360 |
360-480 |
215 |
24 |
|
410 |
410-530 |
235 |
22 | |
|
490 |
490-610 |
285 |
21 | |
|
1Cr0.5Mo |
440 |
440-600 |
275 |
22 |
|
2.25Cr1Mo |
410 |
410-560 |
235 |
20 |
|
490 |
490-640 |
275 |
16 | |
|
化学成份 | |||||||||||||
|
分类 |
钢级 |
C |
Si |
Mn |
P≤ |
S≤ |
Cr |
Mo |
Ni |
Cu |
Sn |
W |
总量 |
|
碳钢和
碳锰钢 |
360 |
≤0.17 |
≤0.35 |
0.40-0.80 |
0.040 |
0.040 |
≤0.25 |
≤0.10 |
≤
0.30 |
≤
0.30 |
- |
- |
≤
0.70 |
|
410 |
≤0.21 |
≤0.35 |
0.40-1.20 |
0.040 |
0.040 |
≤0.25 |
≤0.10 |
≤
0.30 |
≤
0.30 |
- |
- |
≤
0.70 | |
|
440 |
≤0.23 |
≤0.35 |
0.80-1.50 |
0.040 |
0.040 |
≤0.25 |
≤0.10 |
≤
0.30 |
≤
0.30 |
- |
- |
≤
0.70 | |
|
1Cr0.5Mo |
440 |
0.10-0.18 |
0.10-0.35 |
0.40-0.70 |
0.040 |
0.040 |
0.70-1.10 |
0.45-0.65 |
≤
0.30 |
≤
0.25 |
≤
0.03 |
≤
0.020 |
- |
|
2.25Cr1Mo |
410 |
0.08-0.15 |
0.10-0.35 |
0.40-0.70 |
0.040 |
0.040 |
2.00-2.50 |
0.90-1.20 |
≤
0.30 |
≤
0.25 |
≤
0.03 |
≤
0.020 |
- |
|
14*2 |
34*5 |
60*4.5 |
114*6.3 |
|
16*1.5 |
38*3.5 |
60*12 |
114*6.5 |
|
16*3.5 |
38*4 |
63.5*4 |
114*7 |
|
18*3 |
38*6 |
60*5 |
114*14 |
|
22*2.5 |
42*3 |
60*5.5 |
114*16 |
|
22*3 |
42*3.5 |
63.5*6 |
127*16 |
|
22*3.5 |
42*4 |
68*4 |
140*10 |
|
22*4 |
42*5 |
68*5.5 |
140*16 |
|
25*4 |
42*5.5 |
76*5 |
168*12 |
|
27*3 |
42*6 |
76*5.5 |
168*14 |
|
27*4 |
48*3.5 |
76*6 |
219*11 |
|
28*4 |
48*4 |
76*7 |
219*13 |
|
30*5 |
48*5 |
83*7 |
273*9 |
|
32*4 |
48*5.5 |
89*4 |
325*8 |
|
34*3 |
50.8*3.65 |
89*5 |
377*16 |
|
34*3.5 |
57*3.5 |
89*12.5 |
377*20 |
|
34*4 |
60*4 |
114*6 |
426*20 |
|
34*4.5 |
|
|
|