Melting point of aluminum

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The melting point of aluminum alloy is a very complicated issue, involving the influence of many factors. Aluminum alloys with different grades have different melting points.

What is melting point

The melting point is the temperature at which a substance changes from a solid state to a liquid state, and may also be referred to as the melting temperature or melting point.

Melting Point Of Aluminum Alloy

Melting point of aluminum alloy

In the field of chemistry and physics, melting point is a very important property because it can help us understand the properties and behavior of substances for proper selection and design in practical applications.
Melting points are usually expressed in degrees Celsius or Fahrenheit and can be determined or calculated experimentally.

Comparison of melting points of aluminum and other metals

Aluminum is a lightweight, strong, conductive, and corrosion-resistant metal that is used in a wide variety of fields. As a common metal material, the melting point of aluminum is an important property that people pay attention to. Here is a comparison of the melting points of aluminum and some other common metals:

Metals Fahrenheit (f): Celsius (c):
Aluminum 1,220 660
Yellow Brass 1,660-1,710 905-932
Bronze 1,675 913
Red Brass 1,810-1,880 990-1,025
Copper 1,983 1,084
Cast Iron 2,060-2,200 1,127-1,204
Carbon Steel 2,500-2,800 1,371-1,593
Nickel 2,647 1,453
Wrought Iron 2,700-2,900 1,482-1,593
Stainless Steel 2,750 1,510
Titanium 3,040 1,670

Table source: https://www.onlinemetals.com/en/melting-points

Which metals have a lower melting point?

Mercury (Hg) is the metal with the lowest melting point at normal temperature and pressure. Mercury is a silvery liquid metal that is solid below 20 degrees Celsius and liquid above 20 degrees Celsius, and has a melting point of -38.83 degrees Celsius (-37.89 degrees Fahrenheit), the lowest melting point of any known metal.

Aluminum Ingot

Aluminum ingot

In addition to mercury, there are other metals with relatively low melting points, such as sodium (Na), aluminum (Al) and magnesium (Mg), whose melting points are 97.72 degrees Celsius, 660.32 degrees Celsius and 650 degrees Celsius, respectively.

Melting points of aluminum alloys with different alloys

Aluminum alloy is an alloy material mixed with aluminum and other metals (such as copper, zinc, magnesium, etc.). Different grades of aluminum alloys have different melting points due to their different compositions. The following are melting point data for some common aluminum alloy grades:

Alloy Melting Range (°F) Melting Range (°C) Applications
1000 series 1220 660 Generally used in food packaging, electronic products, home building materials, auto parts, cooking utensils, etc.
2000 series 1018 – 1182 548-639 Excellent characteristics such as high strength, rigidity, wear resistance, corrosion resistance and weldability,widely used in aviation, automobile, military industry, sports equipment and other fields.
3000 series 1058 – 1180 570-638 3000 series aluminum alloy has good corrosion resistance, weldability and formability, so it is widely used in food processing, construction, chemical industry, shipbuilding and other fields.
4000 series 1076 – 1184 580-640 The 4000 series aluminum alloy has excellent characteristics such as high thermal expansion coefficient, low melting point, good machinability and corrosion resistance, so it is widely used in aviation, shipbuilding, electronics, metallurgy and other fields.
5000 series 1139 – 1211 615-655 5000 series aluminum alloys are widely used in aviation, automobiles, ships, construction and other fields
6000 series 1076 – 1211 580-655 Building products, automotive parts, piping, furniture, bicycle frames, railroad cars,representative product-6061 aluminum
7000 series 716 – 1184 380-640 Aircraft wings and fuselages, missile parts, gears and shafts, worm gears

It should be noted that the above data are for reference only, and will be affected by many factors in actual application, such as material purity, heat treatment process, etc., which may cause a slight change in the melting point.

In addition, different aluminum alloy grades also have different mechanical properties, corrosion resistance, processing properties, etc., and it is necessary to select appropriate materials according to specific application requirements.

In general, the melting point of aluminum alloy is a very complicated issue, involving the influence of many factors. In practical applications, it is necessary to select a suitable aluminum alloy according to specific requirements and conditions to ensure that it has the required mechanical properties, corrosion resistance and heat treatment properties.

Melting points of different grades of aluminum alloys

Aluminum Alloy Melting Point (°C) Melting Point (°F)
1100 660 1220
2011 535 995
2024 505 940
3003 655 1215
5052 605 1120
6061 585 1085
6063 555 1030
7075 480 895

Does the melting point of aluminum affect the manufacture of aluminum alloy sheets/coils?

The answer is yes, first of all we need to understand the production process of aluminum alloy sheet/coil:

Aluminum Sheet/Coil

Aluminum sheet/coil

  • 1. Put the aluminum ingot into the ingot melting furnace to melt the aluminum ingot into liquid aluminum;
  • 2. Add a small amount of other elements to the liquid aluminum, such as (manganese, magnesium, copper, iron, etc.);
  • 3. Cast the synthesized liquid aluminum into aluminum slabs (450-630mm);
  • 4. Rolling the aluminum ingot (hot rolling or cold rolling);

In the first step, the temperature must be raised to the melting point of aluminum (660 ° C), and the melting point of aluminum is increased, so the temperature of the ingot melting furnace needs to be increased;
The melting points of aluminum and aluminum alloys also have a certain impact on their applications. Aluminum alloys with lower melting points are doomed not to be used in application scenarios with higher ambient temperatures to ensure their own state;

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