CuNi12Zn24 - UNS.C75700 Nickel Silver Alloys, also called Copper-Nickel-Zinc alloys, 64-12-24 respectively, which has good formability, good corrosion and tarnish-resistance performance.
CuNi15Zn20 - UNS.C75400 Nickel Silver Alloys, also called Copper-Nickel-Zinc alloys, 65-15-20 respectively, which has good formability, good corrosion and tarnish-resistance performance.