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