What is the melting point of aluminum

What is Melting Point

The term “melting point” refers to the temperature at which a solid material transitions into a liquid. More specifically, it is the temperature at which the solid and liquid phases of a substance coexist in thermal equilibrium. At this temperature, the substance has an equal probability of being in either its solid or liquid state.

What is the melting point of aluminum

Melting Point of Common Metals

The melting point of a metal is the temperature at which it changes from a solid to a liquid state. The melting points of metals can vary widely depending on the type of metal. Here are some common examples:

• Aluminum (Al): 660.32 °C (1,220.58 °F)
• Copper (Cu): 1,084.62 °C (1,984.32 °F)
• Gold (Au): 1,064.43 °C (1,948.01 °F)
• Iron (Fe): 1,538 °C (2,800 °F)
• Lead (Pb): 327.50 °C (621.50 °F)
• Silver (Ag): 961.93 °C (1,763.47 °F)
• Steel (an alloy of iron and carbon): Typically around 1,370 °C (2,500 °F), but can vary based on composition
• Tin (Sn): 231.93 °C (449.47 °F)
• Zinc (Zn): 419.53 °C (787.15 °F)

From the above data, we can see that aluminum melting point is not high, only 660.32°C, which means that when we melt the aluminum ingot into molten aluminum, we only need to raise the temperature to 660.32°C.

What is the melting point of aluminum

Aluminum melting temperature is 660.32°C, which is relatively low among common metals. The melting points of Fe and Cu are both above 1000°C.

Tungsten is the metal with the highest melting point, up to 3400°C.

Mercury is the metal with the lowest melting point and is liquid at room temperature and pressure,it is melting point is -39°C.

Mercury at room temperature

What are the factors that affect the melting point of aluminum?

The aluminum melting temperature is about 660.32°C (1,220.58°F) at standard atmospheric pressure. However, the melting point of aluminum can be affected by a variety of factors, including but not limited to the following:

• Purity: Pure aluminum has a higher melting point, while aluminum alloys containing impurities or other metallic elements usually have a lower melting point.
• Alloy composition: Adding different alloying elements (such as magnesium, silicon, copper, etc.) can significantly change the melting point of aluminum. For example, aluminum-titanium alloys formed by adding titanium will have different melting points.
• Pressure: Under high pressure conditions, the melting point of aluminum increases. Under standard atmospheric pressure, the melting point of aluminum is about 660.32°C, and under extremely high pressures, such as gigabar pressures, the melting point of aluminum can reach more than 1000°C.
• Grain size: The smaller the grain size, the melting point will be slightly lower because the surface area of small grains is relatively large and more prone to thermal vibration.
• Heating rate: Rapid heating will cause the melting point to decrease slightly because the crystal structure does not have enough time to adapt to the change in temperature.
• Crystal Structure: Aluminum typically exists in a face-centered cubic (FCC) crystal structure, but if the structure changes, the melting point will be affected.
• Other factors: degree of oxidation, thermal stability, etc. may also have a small impact on the melting point.

Melting point of diffirent alloys of aluminum

Why is the melting point of aluminum alloy so important?

Reproduction and processing

When casting aluminum alloy, solid aluminum alloy needs to be melted into liquid. In this process, we control the ambient temperature and save energy by understanding the melting point of aluminum alloy.

Ingot melting furnace

During the hot working process, too high or too low temperature will affect the processing performance of aluminum alloy. During the heat treatment process, the melting point determines the annealing temperature and quenching temperature, which directly affects the hardness and toughness of aluminum alloy.

In the application and selection of aluminum alloy

When using aluminum alloy, we must understand the melting point of aluminum alloy and the performance changes of different aluminum alloys under high temperature, so as to achieve the best effect.

Applications of aluminum alloy

Melting point of all of metals

The above are the melting points of all metals that Henan Huawei Aluminum can know. I hope it can help you. If you have any questions, please contact us:

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