10、20、16Mn、10MoWVNb、15CrMo、1Cr5Mo、等
尺寸公差
钢管种类 |
外径(D) |
钢管壁厚(S) |
不锈钢复合管护栏 |
钢管外径(mm) |
允许偏差(mm) |
钢管壁厚(mm) |
允许偏差(mm) |
>30-50 |
±0.3 |
≤30 |
±10% |
>50-219 |
±0.8% |
热轧管 |
>219 |
±1.0% |
>20 |
±10% |
力学性能
标准 |
牌号 |
抗拉强度(MPa) |
屈服强度(MPa) |
伸长率(%) |
冲击功(J) |
低温冲击Akv |
GB6479 |
10 |
335-490 |
≥205 |
≥24 |
/ |
-20℃≥18 |
20 |
410-550 |
≥245 |
≥24 |
≥39 |
-20℃≥18 |
16Mn |
490-670 |
≥320 |
≥21 |
≥47 |
-40℃≥21 |
10MoWVNb |
470-670 |
≥295 |
≥19 |
≥62 |
|
15CrMo |
440-640 |
≥235 |
≥21 |
≥47 |
|
1Cr5Mo |
390-590 |
≥195 |
≥22 |
≥94 |
|
12 Cr2Mo |
450-600 |
≥280 |
≥20 |
≥38 |
|
化学成分:
标准 |
牌号 |
化学成分(%) |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Ni |
GB6479 |
10 |
0.07-0.14 |
0.17-0.37 |
0.35-0.65 |
≤0.030 |
≤0.030 |
/ |
/ |
/ |
20 |
0.17-0.24 |
0.17-0.37 |
0.35-0.65 |
≤0.030 |
≤0.030 |
/ |
/ |
/ |
16Mn |
0.12-0.20 |
0.20-0.60 |
1.20-1.60 |
≤0.030 |
≤0.030 |
|
|
|
10MoWVNb |
0.07-0.13 |
0.50-0.80 |
0.50-0.80 |
≤0.030 |
≤0.030 |
/ |
0.60-0.90 |
/ |
15CrMo |
0.12-0.18 |
0.17-0.37 |
0.40-0.70 |
≤0.030 |
≤0.030 |
0.80-1.10 |
0.40-0.55 |
/ |
1Cr5Mo |
≤0.15 |
≤0.50 |
≤0.60 |
≤0.030 |
≤0.030 |
4.00-6.00 |
0.45-0.60 |
≤0.60 |
12 Cr2Mo |
0.80-0.15 |
≤0.50 |
0.40-0.70 |
≤0.030 |
≤0.030 |
2.0-2.50 |
0.90-1.20 |
|
注:其中
10的残余元素含量Ni≤0.25%、Cr≤0.15%、Cu≤0.20% 20的残余元素含量Ni≤0.25%、Cr≤0.25%、Cu≤0.20%、Mo≤0.15%、V≤0.08% 其他的残余元素含量Ni≤0.30%、Cr≤0.30%、Cu≤0.20%
89x12 |
146x30 |
194x35 |
245x50 |
377x20 |
89x20 |
159x18 |
194x40 |
245x55 |
377x25 |
89x26 |
159x22 |
194x50 |
273x20 |
377x30 |
89x30 |
159x25 |
219x20 |
273x22 |
377x35 |
108x16 |
159x30 |
219x25 |
273x25 |
377x40 |
108x20 |
159x35 |
219x28 |
273x28 |
377x45 |
108x26 |
159x40 |
219x30 |
273x30 |
377x50 |
108x30 |
168x20 |
219x35 |
273x32 |
377x55 |
114x18 |
168x25 |
219x40 |
273x35 |
377x60 |
114x22 |
168x28 |
219x45 |
273x40 |
406x20 |
114x28 |
168x30 |
219x48 |
273x45 |
406x26 |
133x18 |
168x35 |
219x50 |
273x50 |
406x32 |
133x22 |
168x40 |
203x20 |
273x55 |
406x40 |
133x26 |
180x16 |
203x30 |
325x20 |
426x20 |
133x30 |
180x20 |
203x40 |
325x25 |
426x25 |
140x20 |
180x25 |
245x20 |
325x30 |
426x30 |
140x25 |
180x30 |
245x25 |
325x35 |
426x35 |
140x28 |
180x35 |
245x28 |
325x40 |
426x40 |
140x32 |
180x40 |
245x30 |
325x45 |
426x50 |
140x40 |
194x18 |
245x35 |
325x50 |
426x60 |
146x20 |
194x24 |
245x40 |
325x55 |
|
146x25 |
194x30 |
245x45 |
325x60 |
|
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