What's the difference between brass, red copper, bronze and white copper?

The differences between brass, red copper, bronze and white copper are as follows:

1, the color is different. Brass is yellow, copper is purple, bronze is blue and copper is silvery white.

2. Chemical elements are different.

Brass is an alloy of copper and zinc. Brass composed of copper and zinc is called ordinary brass. If it is composed of two or more elements, such as lead, tin, aluminum, etc. All kinds of alloys are called special brass.

Red copper is a relatively pure copper, which can generally be considered as pure copper, but not necessarily pure copper. Sometimes a small amount of deoxidizing elements or other elements are added to improve the material and performance, so it is also classified as copper alloy.

Bronze is an alloy in which tin or lead is added to pure copper.

White copper is a copper-based alloy with nickel as the main additive element. Copper-nickel binary alloy is called ordinary white copper; White copper alloy containing elements such as manganese, iron, zinc and aluminum is called composite white copper.

3, different uses.

Brass has strong wear resistance. Brass is usually used to make connecting pipes for indoor and outdoor machines of valves, water pipes, air conditioners and radiators.

The conductivity and thermal conductivity of red copper are second only to that of silver, and it is widely used to make electrical and thermal conductivity equipment. Copper has good corrosion resistance in atmosphere, seawater, some non-oxidizing acids (hydrochloric acid and dilute sulfuric acid), alkali, salt solution and various organic acids (acetic acid and citric acid).

Bronze has the characteristics of low melting point, high hardness, strong plasticity, wear resistance, corrosion resistance and bright color, and is suitable for casting various appliances, mechanical parts, bearings, gears and so on.

Compared with other copper alloys, white copper has excellent mechanical and physical properties, good ductility, high hardness, beautiful color, corrosion resistance and good deep drawing performance. Widely used in shipbuilding, petrochemical industry, electrical appliances, instruments, medical devices, daily necessities, handicrafts and other fields, and is also an important resistance and thermocouple alloy.

Extended data:

There are abundant copper resources in the world. Copper is not difficult to extract from ore, but the exploitable mineral resources are relatively scarce. The proven copper in the world is about 350 ~ 570 million tons, of which porphyry copper deposits account for about 76% of the total. In terms of regional distribution, there are five regions with the richest copper reserves in the world:

Africa: Luyilu, Congo (kolwezi), Hitulu, Luanxia and Bariba, Mufulila, Nchanga TLP, Nkana (Rocana).

Asia: China Baiyin (Jinchuan)/Gansu, Shandong/Yanggu Xiangguang Copper Daye, Guixi, Huludao, Jinchang, Shanghai, Tianjin, Yunnan, India's Bula Copper (Daihai), Dutiguolin, Iran's Salz Stone Coal, and Japan's Biez/Ehime (Dongyu Smelter). Shosaka (Akita) Naoshima (Kagawa), Xiaoming Bin (Fukushima), Sagaguan (Oita), Yuno (Okayama), Balcas Mis of Kazakhstan, Jezkazgan Smelter, Wenshan Smelter I of Korea, Wenshan Smelter II, Isabel/Wright of Philippines (Philippine Smelter and Refining Association), Al marek Smelter of Uzbekistan.

Europe: Brixleag, Austria, Hoboken, Umpirdop, Haar Yabar Tower, Hamburg, Heterstein, Lunen 170 of Lunen, Portay magra of Italy, Gwaguffi of Poland, Gwaguffii of legnica Smelter, Zlatna smelter in Romania, Kirovgrad(Carata) in Russia, KraSi Nuo Uralsk smelter, Najinski smelter, Norilsk smelter and Central Uralsk smelter.

References:

Baidu encyclopedia-copper

Baidu encyclopedia-copper

Baidu encyclopedia-brass

Baidu encyclopedia-bronze medal

Baidu encyclopedia-white copper