Melchior (alloy) corrosion in air, freshwater and seawater. Increasing content of nickel iron or manganese improves corrosion and cavitation resistance, especially in sea water and atmospheric water vapor. The alloy of 30% Ni, 0.8% Fe, 1% Mn and 68.2% copper is used in maritime shipping, in particular for the manufacture of condenser tubes. Thanks to the nickel, melchior, unlike brass and bronze, has not a yellow but a silver color. Together with high corrosion resistance, this silvery color is preferred for the manufacture of household utensils. Melchior (alloy) In metallurgy, melchior is an alloy of copper, mainly with nickel (5–30%). Its name
Sundown Tin and Copper Mine have been mined after 1923. There is no reference to copper after this date either. The tin mine area consists of the open cut, with a grided shaft in its floor, and a collapsed adit at the base of its work face. Above the open cut is the main shaft, located on a bench cut into the hillside, with a mullock tip, tripod steel poppet head and older timber shaft- head staging, over a three-compartment shaft. The concrete pad supporting one of the poppet legs is inscribed with the names "T Fredrick, S. Lynn, F. Meehan, GRM Kane". Adjacent to