Copper-Nickel-Tin Spring Alloy

The alloy is a copper-nickel-tin spring alloy that gets its strength through a special heat treatment. When welding, you have to be careful not to put too much heat in, otherwise you lose the spring effect and the material becomes soft. Weld as cool and controlled as possible, preferably with argon or a shielded atmosphere, so the weld stays clean and no scaling forms. After welding, let it cool slowly, then the spring force remains more or less preserved.