无锡无缝钢管GB5312不同材质的化学成分
标准 |
牌号 |
化学成分(%) |
|
|
|
|
C |
Si |
Mn |
P |
S |
|
|
GB/T5312 |
320 |
≤0.16 |
≤0.35 |
0.40~0.70 |
≤0.035 |
≤0.035 |
360 |
≤0.17 |
≤0.35 |
0.40~0.80 |
≤0.035 |
≤0.035 |
|
410 |
≤0.21 |
≤0.35 |
0.40~1.20 |
≤0.035 |
≤0.035 |
|
460 |
≤0.22 |
≤0.35 |
0.80~1.40 |
≤0.035 |
≤0.030 |
|
490 |
≤0.23 |
≤0.35 |
0.80~1.50 |
≤0.035 |
≤0.030 |
|
注:残余元素Cr≤0.25%,Mo≤0.10%,Ni≤0.30%,Cu≤0.30%总量≤0.70%