S32750是目前超級雙相不銹鋼系列中的典型代表,與普通2205雙相不銹鋼相比,Cr、Mo、N含量均有一定程度的提高,尤其是N含量,達到2800ppm左右,耐點腐蝕指數(shù)PREN達到43,因而具有更高的強度、更為優(yōu)越的耐氯離子點蝕、耐應(yīng)力腐蝕性能。適用于石油化工、煉油、真空制鹽、煙氣脫硫等腐蝕環(huán)境更為苛刻的領(lǐng)域。目前世界上只有極個別國家可以生產(chǎn)。
部分不銹鋼化學(xué)成份表
部分不銹鋼化學(xué)成份表 | |||||||||
規(guī)格 | 化學(xué)成份(%) | ||||||||
中國 | 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 | |
美國 | 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 |