Brass is an alloy of copper and what?

Brass is a copper-based alloy with zinc as the main alloying element, so it is named because of its yellow color. Brass has beautiful color, good technological and mechanical properties, high electrical and thermal conductivity, corrosion resistance to atmosphere, fresh water and seawater, easy cutting and polishing, good weldability and low price. It is often used to make conductive heating elements, corrosion-resistant structural parts, elastic elements, daily hardware and decorative materials. , and has a wide range of uses.

Brass products have been popular in Europe for about 300 years since 1230, because they are much cheaper than large sculptures. The bronze statue of Archbishop Villepoux, which started at 123 1, is the earliest bronze statue made of brass. The casting process of brass products is as follows: firstly, crushed zinc ore, charcoal and copper block are mixed and heated to combine zinc and copper, then the alloy is melted by heating, and then the copper liquid is poured into the mold. The earliest brass products in Britain were imported, mainly from Tourne. Customers can order complete tombstones installed on beautiful floors or marble bases from Tourne. The method of making a copper tombstone is to cast a bronze statue first, generally casting the silhouette of the surrounding shed first, then putting it into a prefabricated slate, and carving people's details on the bronze statue with a knife. Sometimes alabaster or other inlay materials are used for the hands and faces of bronze statues. After the bronze statue is completely completed, it is fixed on the stone base with the hidden pin in the lead bolt. The bronze statue itself was placed on a layer of asphalt. Large bronze statues are cast in sections and then connected together.