Copper Metal Suppliers From China

1. Pure Copper: Code “T”

Pure copper, as the name suggests, is the copper with the highest copper content. Because of its purple color, it is also called red copper. The main components are copper and silver, with a content of 99.5-99.95%; the main impurity elements are phosphorus, bismuth, antimony, arsenic, iron, nickel, lead, tin, sulfur, zinc, oxygen, etc.; used to make conductive equipment, high-grade copper alloys, and copper-based alloys.

2. Brass: Code “H”

Brass is an alloy composed of copper and zinc. Brass composed of copper and zinc is called ordinary brass. If it is a variety of alloys composed of more than two elements, it is called special brass. Brass has strong wear resistance. Brass is often used to make valves, water pipes, air conditioner internal and external machine connection pipes and radiators.

3. Bronze: Code “Q”

Bronze is the earliest alloy in the history of metal smelting. It is an alloy of pure copper (red copper) with tin or lead added. It has special importance and historical significance. Compared with pure copper (red copper), bronze has high strength and low melting point (25% tin smelting bronze will reduce the melting point to 800℃. The melting point of pure copper (red copper) is 1083℃). Bronze has good castability, wear resistance and stable chemical properties.

4. White Copper: Code “B”

White copper is a copper-based alloy with nickel as the main added element. It is silvery white and has a metallic luster, hence the name white copper. Copper and nickel can be infinitely dissolved in each other to form a continuous solid solution, that is, regardless of the proportion of each other, it is always a single-phase alloy. When nickel is melted into red copper and the content exceeds 16%, the color of the resulting alloy becomes as white as silver. The higher the nickel content, the whiter the color. The nickel content in white copper is generally 25%.

5. Tin Bronze: Code Name “Qsn”

Bronze with tin as the main alloying element. The tin content is generally between 3% and 14%, and it is mainly used to make elastic components and wear-resistant parts. The tin content of deformed tin bronze does not exceed 8%, and sometimes phosphorus, lead, zinc and other elements are added. Phosphorus is a good deoxidizer and can also improve fluidity and wear resistance. Adding lead to tin bronze can improve machinability and wear resistance, and adding zinc can improve casting performance.

This alloy has high mechanical properties, anti-friction properties and corrosion resistance, is easy to cut, has good brazing and welding properties, a small shrinkage coefficient, and is non-magnetic.