What is the role of brass and copper

Brass: Brass is an alloy of copper and zinc. If brass is only composed of copper and zinc, it is called ordinary brass. If it is composed of two or more kinds of alloys, it is called special brass. Such as copper alloy composed of lead, tin, manganese, nickel, lead, iron, silicon. Brass has strong wear resistance. Special brass is also called special brass, which has high strength, high hardness and strong chemical resistance. Also cutting machining performance is also outstanding. Brass drawn seamless brass tube, soft and wear-resistant. Brass seamless pipes can be used in heat exchangers and condensers, cryogenic pipelines, and submarine transport pipes. Manufacture of sheets, bars, rods, pipes, cast parts, etc. Contains 62% to 68% of copper, has high plasticity, and manufactures pressure-resistant equipment.

Red copper: Red copper is pure copper, also known as red copper. It has good electrical and thermal conductivity, excellent plasticity, and is easy to be processed by hot and cold pressure. It is widely used in the manufacture of electric corrosion for wires, cables, brushes, and electric sparks. Products such as copper require good conductivity. That is red copper. Pure copper is smelted from sulfide or oxide copper ore, which can be used to cast money and make utensils. Ming and Song Ying Xing's "Heavenly Open Objects · Bronze": "Every copper is used for the world, only when it comes out of the mountain and out of the oven, there is only red copper. It is blended with calamine or lead, and turned into brass; Bronze copper; alum, nitrate and other medicines are made into bronze; Guangxi ginseng is fragrant copper; ﹝ lead and written ﹝ diarrhea are cast copper. The primary quality is only red copper. " Chapter Two, Chapter Two: "They smelt red copper with very pure ingredients. Except for natural traces (0.1-0.2%) of impurities, they did not artificially add tin or lead to form alloys. Although the hardness of red copper is poor, it can be directly beaten. Into various tools and decorations. "