sed kama nyenzo kuu za kukausha ni AgCu7.5, AgCu25, AgCu28,AgCu55, nk, na AgCu28 hutumiwa sana. Wana conductivity nzuri, fluidity na wettability, na hutumiwa sana katika sekta ya utupu wa umeme. Kutokana na upinzani mdogo kwa mzigo wa muda mrefu chini ya joto la juu, inafaa tu kwa sehemu za brazing ambazo joto la kazi ni la chini kuliko 400ºC.
Inatumika kama sarafu na mapambo. Aloi zinazotumika kama sarafu ni AgCu7.5, AgCu8,AgCu10, nk; aloi zinazotumika kama mapambo ni AgCu8.4, AgCu12.5, nk
Ag | Cu | Sn | Ni | Pb | Fe | Sb | Bi | |
AgCu4 | 96+/-0.3 | 4+0.3/-0.5 | ≤0.005 | ≤0.05 | ≤0.002 | ≤0.002 | ||
AgCu5 | 95+/-0.3 | 5+0.3/-0.5 | ≤0.005 | ≤0.05 | ≤0.002 | ≤0.002 | ||
AgCu7.5 | 92.5+/-0.3 | 7.5+0.3/-0.5 | ≤0.005 | ≤0.1 | ≤0.002 | ≤0.002 | ||
AgCu8.4 | 91.6+/-0.3 | 8.4+/-0.5 | ≤0.005 | ≤0.1 | ≤0.002 | ≤0.002 | ||
AgCu10 | 90+/-0.3 | 10+/-0.5 | ≤0.005 | ≤0.2 | ≤0.002 | ≤0.002 | ||
AgCu12.5 | 87.5+/-0.3 | 12.5+/-0.5 | ≤0.005 | ≤0.2 | ≤0.002 | ≤0.002 | ||
AgCu20 | 80+/-0.3 | 20+/-0.5 | ≤0.005 | ≤0.2 | ≤0.002 | ≤0.002 | ||
AgCu23 | 77+/-0.5 | 23+/-0.5 | ≤0.005 | ≤0.2 | ≤0.002 | ≤0.002 | ||
AgCu25 | 75+/-0.5 | 25+/-0.5 | ≤0.005 | ≤0.2 | ≤0.002 | ≤0.002 | ||
AgCu26 | 74+/-0.5 | 26+/-0.5 | ≤0.005 | ≤0.2 | ≤0.002 | ≤0.002 | ||
AgCu28 | 72+/-0.5 | 28+/-0.5 | ≤0.005 | ≤0.2 | ≤0.002 | ≤0.002 | ||
AgCu50 | 50+/-0.5 | 50+/-0.5 | ≤0.005 | ≤0.25 | ≤0.002 | ≤0.002 | ||
AgCu99 | 1+/-0.2 | 99+0.2/-0.5 | ||||||
AgCu18Ni2 | 80+/-0.5 | 18+/-0.5 | / | 2+/-0.3 |