Metal brass is copper and what alloy

Brass is a copper based alloy with zinc as the main alloying element. It is named for its yellow color. Brass color is beautiful, has good process and mechanical properties, high electrical and thermal conductivity, corrosion resistance in air, fresh water and sea water, easy cutting and polishing, good welding and cheap. It is widely used in making conductive and thermal components, corrosion resistant structural parts, elastic components, daily hardware and decorative materials, etc.

Brass products were popular in Europe for about 300 years from about 1230 AD because they were much cheaper than large sculptures. The bronze statue of Archbishop Welp, dating from 1231, is the earliest known bronze statue made of brass. The process of casting brass works by mixing crushed zinc ore and charcoal with chunks of copper and heating them to combine the zinc and copper, then heating them to melt the alloy, and then pouring liquid copper into the mold. The earliest brassware in England was imported, chiefly from Tourne. A client can order from Tournay a complete tombstone already mounted in a beautiful baseplate or marble base. The way to make a bronze tombstone is to first cast the bronze statue, usually with a silhouette of the hanging shed around it, then place it in a prefabricated stone slab, and use a knife to cut out the details of the person on the bronze statue. Sometimes the hands and faces were made of alabaster or other inlaid materials. When the statue was finished, it was secured to a stone base with dark pins in lead bolts. The statue itself rests on a layer of pitch. Large bronze statues were cast in pieces and then joined together.

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