用于高壓化肥設(shè)備和管道用無縫鋼管。
力學性能：
|
標準 |
牌號 |
抗拉強度(MPa) |
屈服強度(MPa) |
伸長率(%) |
沖擊功(J) |
低溫沖擊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 |
|
化學成分
|
標準 |
牌號 |
化學成分(%) |
|
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 |
|
12Cr2Mo |
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的殘余元素含量Ni≤0.25%、Cr≤0.15%、Cu≤0.20%
20的殘余元素含量Ni≤0.25%、Cr≤0.25%、Cu≤0.20%、Mo≤0.15%、V≤0.08%
其他的殘余元素含量Ni≤0.30%、Cr≤0.30%、Cu≤0.20%
