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The alloy melting point is the temperature at which an alloy transitions from a solid crystalline state to a liquid one. It is an important property to know when choosing the right metal for a particular application, as it helps determine the strength and durability of the product.
A pure metal has a very defined melting point. This is because the atoms of the metal are arranged in a precise manner and form a strong bond, making the material able to melt at a certain temperature.
But when you alloy a metal, there are other factors that play into the melting point of the alloy. For example, the alloy may contain impurities that change how it melts.
Why do alloys have a range of melting points?
Alloys consist of two or more metals and a combination of other elements, so they have melting points that vary from one element to the next.
In general, alloys do not have a fixed and definite melting point but they start to solidify at a certain temperature and progressively become more and more solid as the temperature drops.
When an alloy consists of aluminum and another element, the cooling curve shows that the initial solidification happens at a specific temperature (figure 5). Once the temperature has dropped to a lower point, the whole of the aluminum has hardened.
The alloy melting point is an essential property to know for any product. It is vital to understand what temperatures an alloy will be subjected to before any work begins, so the product can withstand that temperature range and continue to function properly.