What is the difference between copper, brass and bronze

- Apr 17, 2019-

The difference between brass, copper, and bronze is as follows:


1. The color difference. The brass color is yellow, the copper is purple, the bronze color is brown.


2. The chemical elements of the composition are different.


Brass is an alloy composed of copper and zinc. Brass composed of copper and zinc is called ordinary brass. copper content about 60%; zinc about 40%;

Copper is a relatively pure copper, reach 99.9%. 

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


3. The use is not the same.


Brass has strong wear resistance, and brass is often used in the manufacture of valves, water pipes, air-conditioning inside and outside machine connecting pipes and radiators.


The conductivity and thermal conductivity of copper are second only to silver and are widely used in the production of conductive and heat-conductive equipment. Copper has good corrosion resistance in the atmosphere, seawater and certain non-oxidizing acids (hydrochloric acid, dilute sulfuric acid), alkalis, salt solutions and various organic acids (acetic acid, citric acid).


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


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



Extended information:


The world's copper resources are relatively abundant. Copper is not difficult to extract from its ore, but the minerals that can be mined are relatively rare. The world's proven copper is about 3.5 to 570 million tons, of which porphyry copper mine accounts for about 76% of the total. In terms of regional distribution, there are five regions with the most abundant copper reserves in the world:


Africa: Conululu (Kolwezi), Hitulu, Zambian Luansh and Ballyba, Mufulira, Nchangga TLP, Enkana (Rocana).


Asia: China Silver (Jinchuan) / Gansu, Shandong / Yanggu Xiangguang Copper Daye, Guixi, Huludao, Jinchang, Shanghai, Tianjin, Yunnan, India Burla Copper (Daihai), Tuticorin, Salceshme, Iran, Japan's other children / Ehime (Dongyu Smelter). Otaru (Akita) Naoshima (Kagawa), Komaki Hama (Fukushima), Saga-Ku (Oita), Yuno (Okayama), Kazakhstan, Balkasmis, Jezkazgan Smelter, Wenshan, Korea Smelter I, Wenshan Smelter II, Isabel/Wright (Philippines Smelting and Refining Association), Uzbekistan Al Marek Smelter.


Europe: Brex, Belgium, Belser, Belgium; Hoboken, UM Pildopu, Finland, Hararwarta, Hamburg, Hetstein, Lunen, Lunen 170, Podemagra, Italy, Głogow, Poland I, Główów II, Legnica smelter, Zlatna smelter in Romania, Kirovgrad (Kalata), Krasno Uralsk smelter, Najzhinski, Norilsk smelter, Central Uralsk smelter, Huelva, Spain, Sweden, Sweden, Walsall, South Slav.