SCM420
SCM420 SCM420合金結(jie)構(gou)鋼淬透性(xing)(xing)較高,無(wu)回火(huo)脆性(xing)(xing),焊接性(xing)(xing)相當好,形(xing)成冷(leng)裂的傾(qing)向(xiang)很小,可(ke)切削性(xing)(xing)及(ji)冷(leng)應變塑(su)性(xing)(xing)良好。●特性(xing)(xing)及(ji)適用范(fan)圍:SCM420一般在調(diao)質(zhi)或滲碳淬火(huo)狀態下使用,用于制(zhi)造在非(fei)腐蝕性(xing)(xing)介(jie)質(zhi)及(ji)工(gong)作溫度低于 250℃、含(han)有(you)氮氫混合物(wu)的介(jie)質(zhi)中工(gong)作的高壓管及(ji)各(ge)種(zhong)緊固件、較高級的滲碳零件,如齒輪、軸等。●化學成份(單位%):碳 C :0.18~0.23硅 Si:0.15~0.35錳 Mn:0