C1100因(yin)其顏(yan)色(se)(se)(se)為(wei)紫紅(hong)色(se)(se)(se)而得(de)名(ming)。各種性(xing)質見(jian)銅(tong)(tong)。紫銅(tong)(tong)就(jiu)是工業(ye)純銅(tong)(tong)，其熔點(dian)為(wei)1083℃，無同素異構轉(zhuan)變，相(xiang)對密度為(wei)8.9，為(wei)鎂的(de)五倍。比普(pu)通(tong)鋼(gang)還重約(yue)15%。其具有(you)(you)玫(mei)瑰紅(hong)色(se)(se)(se)，表面形成(cheng)氧(yang)化膜(mo)后呈(cheng)紫色(se)(se)(se)，故一般稱為(wei)紫銅(tong)(tong)。它是含有(you)(you)一些氧(yang)的(de)銅(tong)(tong)，因(yin)而又(you)稱含氧(yang)銅(tong)(tong)。C11000有(you)(you)良好的(de)導(dao)(dao)電、導(dao)(dao)熱、耐(nai)蝕和加工性(xing)能,可(ke)以焊接(jie)和釬焊。含降低(di)導(dao)(dao)電、導(dao)(dao)熱性(xing)雜(za)質較少(shao),微量的(de)氧(yang)對導(dao)(dao)電、導(dao)(dao)熱和加工等性(xing)能影響(xiang)不大，但(dan)易引(yin)起“氫(qing)病”，不宜(yi)在高溫（如>370℃）還原性(xing)氣氛中加工（退(tui)火、焊接(jie)等）和使用。

這里所(suo)說(shuo)的紫(zi)銅(tong)(tong)，確(que)實(shi)要非(fei)常(chang)純(chun)，含銅(tong)(tong)達(da)99.95%以上才(cai)行。極(ji)(ji)少(shao)量的雜質，特別是磷、砷、鋁等，會大(da)大(da)降低銅(tong)(tong)的導電(dian)(dian)率。銅(tong)(tong)中含氧(煉銅(tong)(tong)時容(rong)易(yi)混入(ru)少(shao)量氧)對(dui)導電(dian)(dian)率影響很大(da)，用于電(dian)(dian)氣工業的銅(tong)(tong)一(yi)般都是無(wu)氧銅(tong)(tong)。另外(wai)，鉛、銻、鉍等雜質會使(shi)銅(tong)(tong)的結(jie)晶不能結(jie)合在一(yi)起，造成熱(re)脆(cui)，也會影響純(chun)銅(tong)(tong)的加工。這種純(chun)度很高的純(chun)銅(tong)(tong)，一(yi)般用電(dian)(dian)解法精制(zhi)：把不純(chun)銅(tong)(tong)(即粗(cu)銅(tong)(tong))作陽極(ji)(ji)，純(chun)銅(tong)(tong)作陰極(ji)(ji)，以硫酸銅(tong)(tong)溶液(ye)為(wei)電(dian)(dian)解液(ye)。當電(dian)(dian)流通過后，陽極(ji)(ji)上不純(chun)的銅(tong)(tong)逐(zhu)漸(jian)熔解，純(chun)銅(tong)(tong)便逐(zhu)漸(jian)沉淀在陰極(ji)(ji)上。這樣(yang)精制(zhi)而得(de)的銅(tong)(tong);純(chun)度可達(da)99

C1100化學成分：

銅+銀(yin)Cu+Ag：≥99.90

錫Sn：≤0.002

鋅Zn：≤0.005

鉛(qian)Pb：≤0.005

鉛(qian)Pb：≤0.005

鎳Ni：≤0.005

鐵Fe：≤0.005

銻(ti)Sb：≤0.002

硫S：≤0.005

砷As：≤0.002

鉍Bi：≤0.001

氧O：≤0.06

注：≤0.1(雜質)

C1100物理性能：

抗拉強度σb (MPa)：≥275

伸(shen)長(chang)率δ10 (%)：≥5伸(shen)長(chang)率δ5 (%)：≥10

C1100在含氫的的還原介質(zhi)中易產生氫脆(cui)，俗稱(cheng)氫病，故不宜在高溫370攝氏(shi)(shi)度(du)以上溫度(du)還原介質(zhi)中進行加(jia)工和使用：在低-250攝氏(shi)(shi)度(du)以下，其強度(du)會提高。

C1100是陰(yin)極重熔銅(tong)，其具有高的導電、導熱性，良好的耐(nai)腐蝕性和加(jia)工性能，可(ke)以熔焊及釬(han)焊。

C1100主要(yao)用作導電、導熱(re)和耐腐蝕元器件，如電線電纜、導電螺絲、殼(ke)體和各種導管及航空工(gong)業。