99.99% Cu:Ni:Si:Ag=91.1:6:1.4:1.5 wt%
1元
99.95% Cu:Ni=90.7:9.3 wt%；Cu:Ni=98.5:1.5 wt%
99.9% Cu:Sn=8:2 wt%
99.99% Cu:Zn=7:3 wt%
99.95% W:Cu=3:97 wt%；W:Cu=6:94 wt%
99.99% Cu:Pb=99:1 wt%
99.99% Cu:Ag:Zn=50:40:10 wt%
99.9% Ag:Cu:Zn=45:30:25 wt%
99.99% Au:Cu=80:20 wt%
99.99% Pd:Ag:Cu=10:58:32 wt%；Pd:Ag:Cu=15:65:20 wt%
99.99%Ag:Cu=72:28 wt%；
99.99%Ag:Cu:Ni=71:28:1 wt%；Ag:Cu:Ni=70:28:2 wt%
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