The way to distinguish white copper from silver and Miao silver is that in the normal proportion, the latter two are opposite to each other. However, the modern technology of aluminum white copper is similar to that of Tibetan Silver and Miao silver, but even more white, but the hardness is higher and the proportion is lighter. There is no use of pure white copper or even aluminum and white copper in the Tibetan and Miao silver areas. It is known that only some businessmen use them to make new rubbing molds and non hand-held (especially French and ornament) utensils.
Pure copper and nickel can significantly improve the strength, corrosion resistance, hardness, resistance and thermoelectric properties, and reduce the resistivity temperature coefficient. Compared with other copper alloys, copper has good mechanical and physical properties. It has good ductility, high hardness, beautiful color, and corrosion resistance. It is widely used in shipbuilding, petrochemical, electrical appliances, instruments, medical machinery, daily necessities, crafts and so on. It is also an important resistance and thermoelectric coupling. Kim. The disadvantage of white copper is mainly to add elements - nickel is a scarce strategic material, and the price is more expensive.