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Brass is known as an alloy composed of copper and zinc. Special brass- variety of alloys composed of two or more elements. It has relatively strong abrasion resistance and is often used in the manufacture of valves, water pipes, connectors for pipes for air conditioners and radiators.

Dongguan Weimi Hardware's brass products are mostly used for water pipes and valve fittings. Water pipe fastening parts range from 2-3 series to as many as ten or twenty series.

The picture above Is showing the 8 series product of one of our customers where three components are a set ( nut, stem and socket). Brass is a brittle material, easy to cut and process. Difficult part of the project is that socket is made as a non-standard, left-handed thread and there are no solid parts.

 Weimi team successfully produced the thread gauge and the customer is very satisfied after assembling the finished product. Some product sizes have precision tolerances of + 0.03 / -0, -0.05 / + 0, Dense product size meet requirements in 100%, surface is gloss and there is no oxidation.

Parts made from red cooper are very often produced by Weimi.

The picture below is one of our copper product that have been made through turning and milling process. If you have similar products or are interested in cooperation, you can contact Weimi at any time. We will be happy to help.

Red copper also known as a pure copper is a simple substance which is named for its purple-red color. Properties of red cooper: melting point of 1083 ° C, no isomeric transformation, and a relative density 8.9 is 5 times that of magnesium.

The mass of the same volume of red cooper is about 15% heavier than ordinary steel. It has a rose red and purple color. If copper contains oxygen, we call it oxygen-containing cooper.

Red copper has a good electrical and thermal conductivity, excellent plasticity and is easily processed by hot and cold pressure. It is widely used in the manufacture of wires, cables, brushes, electric sparks and other products that require good electrical conductivity.

The difference between copper and brass

1. Appearance

Brass: pale golden yellow, shiny.

Copper: Rose red, shiny.

2. Ingredients

Copper: copper content about 99.9%.

Brass: about 60% copper; 40% zinc; some brands contain about 1% lead ( contamination ).

3. Intensity

Brass: higher.

Copper: lower.

4. Density and usage

The density of brass (8.93g / cm3) is multi-purpose and is lined with mechanical bearings, which is wear-resistant. Brass castings are commonly used to make valves and pipe fittings. The use of ordinary brass is extremely extensive, such as water tank belts, water supply and drainage pipes, medals, corrugated pipes, serpentine pipes, condenser pipes, cartridge cases, and various complex shapes of punched products and small hardware.

Copper. (Pure copper) has a density of 7.83g / cm3,  melting point of 1083 degrees, and is non-magnetic. It has a good electrical and thermal conductivity, corrosion resistance, and toughness.

5. Conductivity

Brass: lower.

Copper: Higher.

6. Corrosion resistance

Brass: Poor.

Copper: Good.

7. Cutting performance

Brass: Good.

Copper: Poor.

There are other coppers that are not used much in the machining industry. We are not going to introduce them as they are not commonly used.  

Cooper surface.

Copper is susceptible to oxidation because as it’s a non-ferrous metal. It is easily reacting with oxygen in the air and it’s forming copper oxide.

Products that can be passivated will have color differences and have a short anti-oxidation time;

Membrane oxidation is a popular effect. How does it work? The anti-oxidation working fluid penetrates into the gaps on the surface of copper ions (thin, unrecognizable to the naked eye), and then clean the copper surface to prevent oxidation. The working liquid can be dried on the surface of the copper material. The anti-oxidation liquid forms a uniform protective film between the copper ion gaps, which can effectively isolate the oxygen in nature, thereby effectively preventing the oxidation and discoloration of copper. Advantages of this process: durable oxidation time, low cost, bright color, no influence on conductive properties, soldering properties, tin performance.

We hope that you found this information helpful. According to the material properties and your needs, we can help you make the right choice. Of course, if you have any questions, please contact us at any time. If you are not sure what kind of material you should choose, you are more than welcome to ask. We can produce samples of various materials for your choice according to your drawings.