S21803 00Cr18Ni5Mo3Si2 不銹鋼主(zhu)要(yao)特性和用(yong)途


  此鋼在含微量氯(lv)化物水溶(rong)液中耐(nai)應力腐(fu)蝕斷(duan)裂性(xing)能和耐(nai)點(dian)蝕性(xing)能均優(you)于0Cr18Ni9型(xing)奧氏體不銹鋼。這(zhe)種鋼的強度和韌性(xing)等綜合性(xing)能良好(hao),冷、熱加工(gong)(gong)及冷成型(xing)工(gong)(gong)藝性(xing)能均較好(hao)。但是,焊后在熔(rong)合線附近易產生純鐵素(su)體組織,從而使(shi)此鋼喪失雙相鋼的良好(hao)特性(xing)。


  用于(yu)制造在含(han)有微量氯離子(zi)的(de)介質中工(gong)(gong)作的(de)耐(nai)應力腐蝕的(de)部(bu)件,尤(you)其(qi)是適(shi)用于(yu)制造冷凝器、熱(re)交換(huan)器等換(huan)熱(re)設備。已應用于(yu)石油煉制工(gong)(gong)業、紙漿工(gong)(gong)業和化(hua)肥工(gong)(gong)業。