鉛(qian)(qian)(qian)(qian)(qian)是一(yi)種暗灰色(se)的(de)(de)(de)金屬，熔點為327℃，它(ta)(ta)有(you)(you)很好(hao)的(de)(de)(de)耐(nai)腐(fu)蝕性(xing)能，常(chang)(chang)用(yong)(yong)(yong)來作硫(liu)酸(suan)(suan)(suan)(suan)設備和(he)管(guan)(guan)(guan)道(dao)(dao)襯(chen)(chen)里。鉛(qian)(qian)(qian)(qian)(qian)在大(da)氣、淡水、海水中(zhong)(zhong)很穩定，鉛(qian)(qian)(qian)(qian)(qian)對硫(liu)酸(suan)(suan)(suan)(suan)、磷(lin)酸(suan)(suan)(suan)(suan)、亞硫(liu)酸(suan)(suan)(suan)(suan)、鉻(ge)酸(suan)(suan)(suan)(suan)和(he)氫氟酸(suan)(suan)(suan)(suan)等則(ze)有(you)(you)良好(hao)的(de)(de)(de)耐(nai)蝕性(xing)。鉛(qian)(qian)(qian)(qian)(qian)不耐(nai)硝酸(suan)(suan)(suan)(suan)的(de)(de)(de)腐(fu)蝕，在鹽酸(suan)(suan)(suan)(suan)中(zhong)(zhong)也不穩定。鉛(qian)(qian)(qian)(qian)(qian)質軟，可塑性(xing)好(hao)，管(guan)(guan)(guan)道(dao)(dao)工(gong)程中(zhong)(zhong)常(chang)(chang)用(yong)(yong)(yong)鉛(qian)(qian)(qian)(qian)(qian)管(guan)(guan)(guan)。在安裝鑄鐵管(guan)(guan)(guan)承(cheng)插口(kou)時(shi)，常(chang)(chang)用(yong)(yong)(yong)鉛(qian)(qian)(qian)(qian)(qian)做接(jie)口(kou)填(tian)塞(sai)材(cai)料(liao)，以牌號為Pb6的(de)(de)(de)鉛(qian)(qian)(qian)(qian)(qian)較適(shi)宜(yi)。硬(ying)鉛(qian)(qian)(qian)(qian)(qian)是鉛(qian)(qian)(qian)(qian)(qian)和(he)銻的(de)(de)(de)合(he)金，它(ta)(ta)的(de)(de)(de)抗腐(fu)蝕性(xing)略低于純鉛(qian)(qian)(qian)(qian)(qian)，但機械強度較高，常(chang)(chang)用(yong)(yong)(yong)于制(zhi)造耐(nai)酸(suan)(suan)(suan)(suan)設備。鉛(qian)(qian)(qian)(qian)(qian)蒸氣有(you)(you)毒，故熔化(hua)(hua)鉛(qian)(qian)(qian)(qian)(qian)時(shi)，要(yao)防止(zhi)燙傷和(he)鉛(qian)(qian)(qian)(qian)(qian)中(zhong)(zhong)毒。在化(hua)(hua)工(gong)行業(ye)，鉛(qian)(qian)(qian)(qian)(qian)主要(yao)用(yong)(yong)(yong)于處(chu)理硫(liu)酸(suan)(suan)(suan)(suan)的(de)(de)(de)設備上。Pb4用(yong)(yong)(yong)作設備內襯(chen)(chen)，Pb6用(yong)(yong)(yong)作管(guan)(guan)(guan)道(dao)(dao)接(jie)頭，硬(ying)鉛(qian)(qian)(qian)(qian)(qian)可制(zhi)造硫(liu)酸(suan)(suan)(suan)(suan)工(gong)業(ye)用(yong)(yong)(yong)的(de)(de)(de)泵、閥門、管(guan)(guan)(guan)道(dao)(dao)等。