The difference between copper and brass

The difference between copper and brass

Red copper: also called red copper, that is, pure copper, red copper and brass are different in color and quality! In fact, the color is clear at a glance, as the name implies! Due to the surface oxidation, there is a layer of red cuprous oxide, which looks like The color is purplish red. The quality of red copper is harder than brass, and the weight is about the same

Brass: Brass is an alloy composed of copper and zinc. If it is only composed of copper and zinc, brass is called ordinary brass. If it is composed of two or more elements in multiple alloys, it is called special brass. For example, a copper alloy composed of lead, tin, manganese, nickel, lead, iron, and silicon. Brass has strong wear resistance. Special brass is also called special brass. It has high strength, high hardness and strong chemical resistance. There are also outstanding cutting mechanical properties. The seamless copper tube is drawn from brass, which is soft and has strong wear resistance. Brass seamless pipes can be used for heat exchangers and condensers, cryogenic pipelines, and subsea transportation pipes. Manufacture of sheets, bars, bars, pipes, casting parts, etc. 62%～68% copper, strong plasticity, manufacturing pressure equipment, etc.

The difference between copper and brass

1. Appearance color

Brass: It is light golden yellow and shiny.

Copper: Rose red, shiny.

2. Ingredients

Red copper: The content of copper has reached 99.9%.

Brass: about 60% copper; about 40% zinc; some grades contain about 1% lead, which is impurity.

3. Strength

Brass: higher.

Copper: lower.

4. Different density and usage

The density of brass (8.93g/cm3) is mostly used for mechanical bearing lining, and it is wear-resistant. Brass castings are often used to make valves and pipe fittings. Ordinary brass has a wide range of uses, such as water tank belts, water supply and drainage pipes, medals, corrugated pipes, serpentine tubes, condenser tubes, bullet casings, and various complex shaped punching products, small hardware parts, etc. As the zinc content increases from H63 to H59, they can withstand hot processing well, and are mostly used in various parts of machinery and electrical appliances, stamping parts and musical instruments.

Red copper. Pure copper, also known as red copper, has a density (7.83g/cm3), a melting point of 1083 degrees, and is non-magnetic. It has good electrical conductivity, thermal conductivity, corrosion resistance, and toughness. Red copper is malleable. Pure copper the size of a drop of water It can be drawn into a filament that grows up to two kilometers, or rolled into an almost transparent foil larger than the bed. The most valuable property of copper is its very good electrical conductivity, second only to silver in all metals. But copper is cheaper than silver. Much more, so it has become the "protagonist" of the electrical industry.

5. Difference in conductivity

Brass: lower.

Copper: higher.

6. The difference in corrosion resistance

Brass: Inferior.

Copper: better.

7. The difference in cutting performance

Brass: better.

Copper: poor.