B25鎳白銅
B25白銅特(te)性及適用范圍:
為(wei)結構銅鎳(nie)合金,具有高的力(li)學(xue)性(xing)(xing)能和抗蝕性(xing)(xing),在熱態(tai)及冷態(tai)下壓力(li)加工性(xing)(xing)良好,由于其(qi)含鎳(nie)量較高,故其(qi)力(li)學(xue)性(xing)(xing)能和耐(nai)蝕性(xing)(xing)均(jun)較B5.B19高。
B25白銅化學成分
鎳+鈷 Ni+Co:24.0-26.0
鐵(tie) Fe:0.5
錳(meng) Mn:0.5
鋅Zn:0.3
硅(gui) Si:0.15
鎂(mei) Mg:0.05
鉛 Pb:0.001
硫 S:0.01
碳 C:0.05
磷 P:0.01
銅(tong) Cu:余量(liang)
雜質:1.8
錫 Sn:0.03
B25白銅力(li)學(xue)性能:
抗拉(la)強度(du) (σb/MPa):≥215
伸長率(lv) (δ10/%):≥20
注:板(ban)材的橫向拉(la)伸性能(neng)
試樣尺寸:厚度(7-14)
白銅的密度
白銅(tong)是銅(tong)鎳合金的雅稱(cheng),密(mi)度在銅(tong)和鎳之間 8.9--8.88
白(bai)銅(tong)(tong)(tong)(tong)是以鎳(nie)為主要添(tian)加元(yuan)素(su)的(de)銅(tong)(tong)(tong)(tong)基合(he)(he)金(jin),呈銀白(bai)色,有金(jin)屬光澤,故名白(bai)銅(tong)(tong)(tong)(tong)。銅(tong)(tong)(tong)(tong)鎳(nie)之間彼此(ci)可無限固(gu)溶(rong),從而(er)形成連續固(gu)溶(rong)體,即不論(lun)彼此(ci)的(de)比(bi)例多少(shao),而(er)恒為α--單相合(he)(he)金(jin)。當把鎳(nie)熔入紅銅(tong)(tong)(tong)(tong)里D200,含(han)量超(chao)過16%以上時,產生(sheng)的(de)合(he)(he)金(jin)色澤就變得(de)相對(dui)近(jin)白(bai)如銀,鎳(nie)含(han)量越高,顏色越白(bai),但是,畢竟與(yu)銅(tong)(tong)(tong)(tong)融合(he)(he),只要鎳(nie)含(han)量比(bi)例不超(chao)過70%,肉眼都會看到銅(tong)(tong)(tong)(tong)的(de)黃(huang)色。何況通常(chang)白(bai)銅(tong)(tong)(tong)(tong)中(zhong)鎳(nie)的(de)含(han)量一般為25%。
1、白銅的用途
在銅合金中,白銅因(yin)耐蝕性(xing)優異(yi),且易(yi)于塑型、加工(gong)(gong)(gong)和焊接,廣泛用于造船、石油、化工(gong)(gong)(gong)、建筑、電(dian)力、精密儀表、器械、樂(le)器制(zhi)作(zuo)等部門作(zuo)耐蝕的結構件。某些(xie)白銅還有特殊的電(dian)學(xue)性(xing)能,可(ke)制(zhi)作(zuo)電(dian)阻元(yuan)件、熱電(dian)偶材料和補償(chang)導線。非工(gong)(gong)(gong)業用白銅主要用來制(zhi)作(zuo)裝飾工(gong)(gong)(gong)藝品(pin)。