What is the difference between brass and copper? Brass and copper are two common copper alloys in the field of metal materials, and they differ significantly in several ways. In this paper, we will conduct an in-depth comparative analysis of brass and copper from the aspects of composition, physical properties, applications and economic value.
1. Composition differences
Brass: Brass is mainly composed of copper (Cu) and zinc (Zn), of which the copper content usually accounts for about 60%, while the zinc content accounts for about 40%. In addition, depending on the specific application needs, small amounts of other elements such as lead, tin, manganese, nickel, iron, and silicon may be added to the brass. These additions can further adjust the mechanical properties, corrosion resistance and processability of brass.
Copper: Copper, also known as red copper, is the main component of pure copper, and the copper content can be as high as 999% or more. Due to its high purity properties, copper contains almost no other impurity elements.
2. Comparison of physical properties
Appearance & Color: Brass has a golden yellow color with a smooth surface and a metallic luster. Copper, on the other hand, has a purplish-red or reddish appearance due to the oxidation of its surface to form a layer of red cuprous oxide.
Density & Strength: Brass is usually low in density, around 852～8.62g cm, while copper has a higher density, about 89～8.95g/cm³。In terms of strength, brass is usually stronger than copper due to the presence of other alloying elements in it. Copper has relatively low strength due to its high purity.
Third, the field of application
Brass: Brass has good wear resistance, mechanical properties and processing properties, so it is widely used in the manufacture of various mechanical parts, seamless copper tubes, hardware accessories and works of art and other fields. In addition, brass is often used in the manufacture of plumbing equipment such as faucets and valves, as well as electrical components such as electrical connectors.
Copper: Copper is known for its excellent electrical conductivity, thermal conductivity and ductility, and is widely used in the electric power and electrical industries. It is often used to make wires, cables, motor windings, and transformers as key components of electrical equipment. In addition, in the field of architectural decoration, copper is also favored for its unique color and texture.
Fourth, economic value
In the market, there are certain differences between brass and copper. In general, copper is relatively high, which is mainly due to its high purity and wide range of applications. Brass, on the other hand, is relatively low, but still has a certain market value. The quality of these two copper alloys will also be affected by various factors such as market supply and demand, fluctuations in raw materials, and the international economic situation.
Hopefully, the above information will help you better understand the difference between brass and copper.