Brass Precision Components - Features And Applications

Published By Mahesh H S, 10 Oct 2017



Brass Precision Components - Features And Applications
Brass Precision Components:


The Brass components which are made to a tolerance of plus or minus 0.001mm can be termed as brass precision items. The heading itself is self explantory, we can also concur that items which are machined using a six axis CNC machine with minimum tolerance of 0.001mm can fall in to brass precision components.


The Brass Precision Components are in good demand by different industries all around the globe. All these Brass Precision Components are designed and developed using highly advanced technology. 


Unique Mechanical Characteristics of Brass:


The Brass is a metal which has some unique composition and is mainly composed of ‘Copper’ and ‘Zinc’. Copper is the main component, and brass is usually classified as a copper alloy. The percentage of ‘Zinc’ gives the color to the brass; the more percentage of Zinc, the lighter the color will be. Usually the color of brass differs from darkish red brown to a light silvery yellowish. The Brass is harder and stronger than copper.


It is easy to form into various shapes or very ductile, Its ductility is further improved with addition of Aluminum in its chemical composition.  Brass is an extremely Good Conductor of heat and electricity due to its Copper content.Brass can be used in Heat Exchanges, refrigeration.


It is resistant to corrosion from salt water through its Zinc content, The resistance to corrosion could be further enhanced by adding chromium. Brass being resistant to Corrosion can be used in Plumbing applications, weather-stripping, Marine applications, screws, radiators, musical instruments, and cartridge casings for firearms.


Elastic property of Brass:


In the year 1852, firearms were in rise, the first metal casing cartridges for firearms were introduced. Although several different metals were tried, brass was the most successful because of its ability to expand and seal the breech under pressure when the cartridge was first fired, then immediately contract to admit the empty cartridge casing to be extracted from the firearm. This property led to the development of rapid-fire automatic weapons.


Raw MaterialsThe main component of brass is ‘Copper’; the amount of copper varies from 55% and 95% by density depending on the type of brass and its intended use. The Brass which contains high amount copper are obtained from process called “Electrically refining”, which is atleast to 99.33% pure to decrease or lessen the presence of other materials. Another method of getting out the Copper is from scrap of Copper alloy.  


While using the recycled scrap, the amount of percentages of copper and other alloy materials in the scrap must be known to the manufacturer so that he can manage the percentages of materials to be added in order to achieve the needed brass composition.


Enhancement of Corrosion Resistance in BrassThe second component of brass is zinc. The percentage of zinc varies from 5% and 40% by density depending on the type of brass. Brasses with higher percentages of zinc are stronger and harder, but they are also more difficult to form and is used to prevent corrosion, However there are other elements which can further improve corrosion resistance. 


Arsenic and antimony are sometimes added to brasses that contain more than 20% zinc in order to inhibit corrosion. Chromium enhances corrosion resistance to a maximum.


Application Engineering through Optimal Selection of BrassThe conventional naming for different Brass types is commonly reflected either through the color material or through its intended use. Let us take some example, the yellow brass contained 35% zinc and had a yellowish color, while the red brass contains 15% zinc and had a reddish colour.


The Cartridge brass which contains 30% of zinc was used to make firearm cartridges. Whereas the Naval brass had up to 39.7% of zinc and were used in several applications on ships. As, Zinc provides the needed Corrosion protection needed when brass component is exposed to salt water.


Unfortunately, scattered among the traditional brass names were a number of misnomers. Brass with 10% zinc was called commercial bronze. These brasses are harder and more resistance to corrosion can be brazed or soldered. Its appealing color makes it to be used in Door Knobs, Kick Plates. It can be also used in valves and marine applications.


In US a unique method called “Unified Numbering System” is used to specify for metal and alloys. In this system an alphabetical letter is used – for example in this case the letter “C” is used for Copper, as of brass is a copper alloy- succeeded by five digits. 


The Chemical composition in the Brass makes them appropriate for being shaped into the end product by using mechanical methods like forging or rolling, these are called as ‘Wrought Brasses’. Here the first digit of their designation is I through 7. A Brass whose chemical configuration makes them appropriate for being shaped into end product by flowing into a mold are called ‘Cast Brasses’, and the first digit of their designation will be 8 or 9.


The Brass Precision Components have So many Good Features. Some Of those are:


1. The Accurate Dimensions. 

2. The corrosion proof. 

3. Brass Precision Components  has Excellent Finish. 

4. It has Nice durability. 


The Applications Of Brass Precision Components are:


1. Used in wiring accessories. 

2. Used in Electric Switch.

3. Used in the sanitary product.

4. Used in Electrical accessories like switch-gear.