4J36 (Alloy ea Katoloso) (Lebitso le Tloaelehileng: Invar, FeNi36, Invar Standard, Vacodil36)
4J29 (Expansion alloy)(Lebitso le Tloaelehileng: Kovar, Nilo K, KV-1, Dilver Po, Vacon 12)
4J42 alloy haholo-holo e entsoe ka tšepe, likarolo tsa nickel. E khetholloa ka coefficient e tsitsitseng ea ho atolosa. Eketsa coefficient ea katoloso ea mocheso le ntlha ea Curie ka ho eketseha ha nickel content.