五金磁鋼可(ke)以說是(shi)永(yong)(yong)(yong)磁(ci)體(ti)中的(de)(de)一種(zhong)，主要用(yong)在(zai)永(yong)(yong)(yong)磁(ci)電(dian)機(ji)上的(de)(de)五(wu)(wu)金(jin)磁(ci)鋼(gang)。五(wu)(wu)金(jin)磁(ci)鋼(gang)主要用(yong)在(zai)直流(liu)電(dian)機(ji)中，與(yu)電(dian)磁(ci)式電(dian)機(ji)通過勵磁(ci)線(xian)圈產(chan)生磁(ci)勢(shi)源不同(tong)(tong)，永(yong)(yong)(yong)磁(ci)電(dian)機(ji)是(shi)以永(yong)(yong)(yong)磁(ci)材料產(chan)生恒定(ding)磁(ci)勢(shi)源。五(wu)(wu)金(jin)磁(ci)鋼(gang)代替電(dian)勵磁(ci)具(ju)(ju)有(you)(you)很多優勢(shi)。可(ke)使電(dian)機(ji)結構(gou)簡單(dan)、維修方(fang)便、重量輕(qing)、體(ti)積小(xiao)(xiao)、使用(yong)可(ke)靠、用(yong)銅量少、銅耗低(di)、能耗小(xiao)(xiao)等(deng)。對電(dian)機(ji)影響(xiang)這方(fang)面，五(wu)(wu)金(jin)磁(ci)鋼(gang)的(de)(de)電(dian)阻率越(yue)高，渦流(liu)損(sun)失(shi)越(yue)小(xiao)(xiao)。同(tong)(tong)時，只有(you)(you)溫度(du)系數小(xiao)(xiao)，在(zai)高溫下才具(ju)(ju)有(you)(you)良(liang)好的(de)(de)溫度(du)穩定(ding)性。