Copper rod is a type of non-ferrous metal processing rod with high conductivity.

There are many types of copper rods, including red copper rods, brass rods, tin bronze rods, and white copper rods. Different types of copper bars have different forming processes and characteristics. The copper bar forming process includes extrusion, rolling, continuous casting, stretching, etc.

It can be roughly divided into several categories: red copper rods, brass rods, bronze rods, white copper rods, etc. The most important ones are still brass rods, red copper rods; There may be confusion in our daily procurement. So what is the difference between a copper rod and a brass rod?

Different materials have different characteristics and uses, and their prices also vary. Red copper rods are more expensive than brass rods.

Differences in purpose

Brass rod

A brass rod is a rod-shaped object made of an alloy of copper and zinc, named after its yellow color. Its melting point is 934-967 degrees. The zinc content varies, and there are also different colors. For example, a zinc content of 18% -20% will turn red yellow, while a zinc content of 20% -30% will turn brown yellow. In addition, brass has a unique sound when struck, so Eastern instruments such as gongs, cymbals, bells, and horns, as well as Western brass instruments, are all made of brass.

Brass has excellent mechanical and wear resistance properties, and can be used for manufacturing precision instruments, ship parts, gun casings, automotive parts, medical parts, electrical parts, as well as various mechanical supporting materials, automotive synchronizer gear rings, etc.

Copper rod

The copper rod is named after its purple red color and has good conductivity, thermal conductivity, corrosion resistance, and processing properties. It can be welded and brazed. It is not necessarily pure copper, and sometimes a small amount of deoxygenation or other elements are added to improve the material and performance, so it is also classified as a copper alloy.

Processing bars can be divided into:

Ordinary red copper (T1, T2, T3, T4)

Oxygen free copper (TU1, TU2, and high-purity, vacuum oxygen free copper)

Deoxycopper (TUP, TUMn)

Special copper (with a small amount of alloying elements added, such as arsenic copper, tellurium copper, silver copper)

Copper has good conductivity, thermal conductivity, and plasticity, second only to silver in terms of conductivity and thermal conductivity; Easy to process with hot and cold pressure, used in the electrical industry. Many products with high conductivity are used for manufacturing wires and cables, brushes, and special copper for electric spark erosion.

Red copper has good corrosion resistance in the atmosphere, seawater, certain non oxidizing acids (hydrochloric acid, dilute sulfuric acid), alkali, salt solutions, and various organic acids (acetic acid, citric acid), and is used in the chemical industry.

Characteristic differences

Density difference: Red copper rods have a slightly higher density of 8.9-8.95 (electrolytic copper); The brass rod has a lower density between 8.52 and 8.62 (rolled brass).

Different in composition: The main component of a red copper rod is copper, with a copper content of up to 99.95%; The components of brass rods include copper and zinc, with a copper content of 56% to 68%; Special brass may also have other impurities, so it can be distinguished from other impurities simply in terms of composition.

Different in strength: Brass rods have more components, so their strength is relatively high. However, the main component of red copper rods is copper, with almost no other impurities, so the strength of red copper is relatively lower than that of brass.

Copper bar forming process flow

Although there are many differences between them, the production process is the same; Copper bar forming process flow: including extrusion, rolling, continuous casting, stretching, etc.

1. Extrusion (rolling) - stretching - (annealing) - finishing - finished product.

2. Continuous casting (upward drawing, horizontal or wheel type, track type, immersion) - (rolling) - stretching - (annealing) - finishing - finished product.

3. Continuous extrusion stretching (annealing) finishing finished product.

Article source: Internet