S21803 00Cr18Ni5Mo3Si2 不銹鋼主要特性和用(yong)途

  此鋼(gang)在含(han)微量氯(lv)化(hua)物水溶液中(zhong)耐應力(li)腐蝕斷裂性(xing)(xing)能(neng)和耐點蝕性(xing)(xing)能(neng)均優于0Cr18Ni9型(xing)奧氏體不銹鋼(gang)。這種鋼(gang)的強度和韌性(xing)(xing)等綜合性(xing)(xing)能(neng)良(liang)好，冷、熱加工及冷成型(xing)工藝性(xing)(xing)能(neng)均較好。但(dan)是，焊后在熔合線(xian)附近易產生純鐵素體組織，從而使(shi)此鋼(gang)喪失雙相(xiang)鋼(gang)的良(liang)好特性(xing)(xing)。

  用(yong)于(yu)制(zhi)(zhi)造(zao)在含有(you)微量氯離子的介質中工(gong)(gong)作的耐應(ying)力(li)腐蝕的部件，尤其(qi)是(shi)適用(yong)于(yu)制(zhi)(zhi)造(zao)冷凝器、熱交(jiao)換器等(deng)換熱設備。已應(ying)用(yong)于(yu)石油煉(lian)制(zhi)(zhi)工(gong)(gong)業(ye)、紙漿工(gong)(gong)業(ye)和化肥工(gong)(gong)業(ye)。