S32750是目前超级双相不锈钢系列中的典型代表,与普通2205双相不锈钢相比,Cr、Mo、N含量均有一定程度的提高,尤其是N含量,达到2800ppm左右,耐点腐蚀指数PREN达到43,因而具有更高的强度、更为优越的耐氯离子点蚀、耐应力腐蚀性能。适用于石油化工、炼油、真空制盐、烟气脱硫等腐蚀环境更为苛刻的领域。目前世界上只有极个别国家可以生产。
部分不锈钢化学成份表
部分不锈钢化学成份表 |
规格
|
化学成份(%)
|
中国
|
|
C
|
Si
|
Mn
|
P
|
S
|
Ni
|
Cr
|
Mo
|
0Cr19Ni9
|
≤0.08
|
≤1.00
|
≤2.00
|
≤0.035
|
≤0.035
|
8.00-10.50
|
18.00-20.00
|
|
0Cr19Ni11
|
≤0.030
|
≤1.00
|
≤2.00
|
≤0.035
|
≤0.035
|
9.00-13.00
|
18.00-20.00
|
|
0Cr17Ni12Mo2
|
≤0.08
|
≤1.00
|
≤2.00
|
≤0.035
|
≤0.035
|
10.00-14.00
|
16.00-18.00
|
2.00-3.00
|
0Cr19Ni14Mo2
|
≤0.030
|
≤1.00
|
≤2.00
|
≤0.035
|
≤0.035
|
12.00-15.00
|
16.00-18.00
|
2.00-3.00
|
日本
|
SUS304
|
≤0.08
|
≤1.00
|
≤2.00
|
≤0.040
|
≤0.040
|
8.00-11.00
|
18.00-20.00
|
|
SUS304L
|
≤0.030
|
≤1.00
|
≤2.00
|
≤0.040
|
≤0.040
|
9.00-13.00
|
18.00-20.00
|
|
SUS316
|
≤0.08
|
≤1.00
|
≤2.00
|
≤0.040
|
≤0.040
|
10.00-14.00
|
16.00-18.00
|
2.00-3.00
|
SUS316L
|
≤0.030
|
≤1.00
|
≤2.00
|
≤0.040
|
≤0.040
|
12.00-16.00
|
16.00-18.00
|
2.00-3.00
|
美国
|
Tp304
|
≤0.08
|
≤0.75
|
≤2.00
|
≤0.040
|
≤0.040
|
8.00-11.00
|
18.00-20.00
|
|
Tp304L
|
≤0.035
|
≤0.75
|
≤2.00
|
≤0.040
|
≤0.040
|
8.00-13.00
|
18.00-20.00
|
|
Tp316
|
≤0.08
|
≤0.75
|
≤2.00
|
≤0.040
|
≤0.040
|
11.00-14.00
|
16.00-18.00
|
2.00-3.00
|
Tp316L
|
≤0.035
|
≤0.75
|
≤2.00
|
≤0.040
|
≤0.040
|
10.00-15.00
|
16.00-18.00
|
2.00-3.00
|