C71640白銅

標準(zhun)：ASTM B111M-1992(1992、1993年版)

名稱：銅(tong)-鎳(nie)-鐵-錳合金

●化學成分(fen)：

銅+銀 Cu+Ag：余(yu)量

鉛 Pb：≤0.05

鐵 Fe：1.7~2.3

鋅(xin) Zn：≤1.0

鎳 Ni：29.0~32.0

錳 Mn：1.5~2.5

白銅(tong)與黃(huang)銅(tong)的用途區別

黃(huang)銅(tong)(tong)(tong)(tong)是由(you)(you)銅(tong)(tong)(tong)(tong)和(he)(he)鋅(xin)所組成的(de)合金(jin)。如果(guo)只是由(you)(you)銅(tong)(tong)(tong)(tong)、鋅(xin)組成的(de)黃(huang)銅(tong)(tong)(tong)(tong)就(jiu)叫作普(pu)通黃(huang)銅(tong)(tong)(tong)(tong)。如果(guo)是由(you)(you)二種以上的(de)元素組成的(de)多(duo)種合金(jin)就(jiu)稱為特(te)殊(shu)黃(huang)銅(tong)(tong)(tong)(tong)。如由(you)(you)鉛(qian)、錫、錳(meng)、鎳、鉛(qian)、鐵、硅組成的(de)銅(tong)(tong)(tong)(tong)合金(jin)。黃(huang)銅(tong)(tong)(tong)(tong)有較強(qiang)的(de)耐磨(mo)性(xing)能(neng)(neng)。特(te)殊(shu)黃(huang)銅(tong)(tong)(tong)(tong)又叫特(te)種黃(huang)銅(tong)(tong)(tong)(tong)，它(ta)強(qiang)度(du)(du)高、硬度(du)(du)大、耐化學腐(fu)蝕性(xing)強(qiang)。還有切削加(jia)工的(de)機械性(xing)能(neng)(neng)也(ye)較突出。由(you)(you)黃(huang)銅(tong)(tong)(tong)(tong)所拉(la)成的(de)無縫銅(tong)(tong)(tong)(tong)管(guan)，質軟、耐磨(mo)性(xing)能(neng)(neng)強(qiang)。黃(huang)銅(tong)(tong)(tong)(tong)無縫管(guan)可用于熱交(jiao)換(huan)器和(he)(he)冷凝器、低溫管(guan)路、海(hai)底運輸管(guan)。制造(zao)板料、條材、棒材、管(guan)材，鑄造(zao)零件(jian)等。含(han)銅(tong)(tong)(tong)(tong)在(zai)62%～68%，塑性(xing)強(qiang)，制造(zao)耐壓設備等。

白(bai)銅(tong)是以鎳(nie)(nie)為主要添加元(yuan)素的銅(tong)基合金，呈銀白(bai)色，有金屬光澤(ze)，故(gu)名白(bai)銅(tong)。銅(tong)鎳(nie)(nie)之間彼此可無限(xian)固溶(rong)，從而形成連續固溶(rong)體，即不論(lun)彼此的比例多少，而恒為α--單(dan)相合金。當(dang)把(ba)鎳(nie)(nie)熔入紅銅(tong)里，含(han)量超(chao)過16％以上時，產(chan)生的合金色澤(ze)就變得潔白(bai)如銀，鎳(nie)(nie)含(han)量越(yue)高，顏色越(yue)白(bai)。白(bai)銅(tong)中鎳(nie)(nie)的含(han)量一般(ban)為25%。