(国标)高压化肥设备用无缝钢管---执行标准:GB6479(2000)
GB6479无缝钢管是:化肥设备用高压无缝钢管(GB6479-2000)是适用于工作温度为-40~400℃、工作压力为10~30Ma的化工设备和管道的优质碳素结构钢和合金钢无缝钢管。
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 试样尺寸:10*10*55 |
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 |
V |
W |
Nb |
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 |
|
0.30~0.050 |
0.50~0.90 |
0.06~0.12 |
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%
|