There are many types of car alloys and tyres in different sizes and designs. In fact alloy wheels come in so many styles that you can make your car really original with the right set. Here are a few of the most important types of car alloys and tyres that car owners should know about.
Car alloys made of aluminum and nickel are called aluminum alloys. It is the proportions of metal which determines the strength and weight of a wheel. Aluminum alloys have less nickel in them which means these alloys are lighter and more pliable in an impact. However, car alloys with more nickel means a heavier wheel. While this kind of wheel will not bend easily, it does tend to be more brittle and prone to cracking.
Next are the car alloys and tyres called cast aluminum. They are exactly what their name suggests, they are made when molten alloy is poured into a mold and allowed to cool. Although there are numerous types of casting methods for car alloys, cast aluminum is the one that is not very dense, and so greater weight of metal is needed for strength.
This type of car alloy is the simplest form. It requires casting metal to be poured directly into the mold. Due to this, these alloys are the least dense metal, since gravity is the only thing pushing the metal into the mold. Gravity-cast aluminum alloy is therefore thicker and heavier than other alloys in order to be strong enough to be used safely for wheels.
Next are the two types of pressure casting. This method uses low pressure and counter pressure casting for making car alloys. For low pressure castings, air pressure is used to force molten metal into the mold. This forces the molten metal to pack itself into the mold, making it more dense and strong. In counter pressure casting, the opposite process is used. A mild vacuum is created inside the mold, which sucks the molten alloy into the mold. This process creates a much dense and stronger car alloy and tyre.
And last is steel, which is heavier and stronger than aluminum, and has been used for constructing wheels for ages. It is harder to bend steel or damage it because it is stronger, and does not require further casting or forging. Massive presses stamp out steel alloys and are then welded together to form the wheel.
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