Nickel alloys are copper-based alloys, with nickel being the main alloying element in them. The mixture of nickel and copper guarantees high strength, electrical resistance and corrosion resistance. Aluminum, iron, manganese, zinc, titanium, lead, silicon can also act as elements of copper-nickel alloys. You can order the alloy by the link: https://asynt.net/en/catalog/stainless-and-heat-resistant-steels/nickel-alloys-en/