不锈钢的耐点腐蚀指数 PRE (Pitting Resistance Equivalent)=%Cr+3.3X% (Mo+%W) +16X%N超级奥氏体不锈钢：PRE40的奥氏体不锈钢区分UNS No.CrNiMoCuNOthersPRE叹相不锈钢-S32305225：3工70.1635.S325.06756.5:3.30.1739超级収相S32750256.93.3：0.2742.S31254；-201360.80.2043超级.S3205325-,5.5,0.2U44奥氏悴不锈钢N08367.2.12460.2044(PEE40)rN08?262025610.204=3玉fTS?205023：22：6O.a-5.47=7 | N0S354：2335.7.50.2051J 5HANG SHANGpTJiitES 耳thl 眄N082521403-20.7Ti31N1基合金N0662t22傷P3.6Nb52N10276IS.1645Fe63N06022：.21$714；W,4Fe67