Properties of Aluminium

Understanding these basic properties of aluminium will assist in choosing the right material for your next project.Aluminium is extensively used throughout the world for a variety of products. It is an abundant element with which many of us interact on a daily basis. Its atomic number is 13 and it is identified with the symbol Al. its extreme malleability properties that it shares with metals like lead and tin, are the cause of it being classified as a poor metal.

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Properties Of Aluminium

Below are the different grades (and their characteristics) of aluminium that we stock...

  1. 6063
  2. 6261
  3. 5083
  4. 6082
  5. 7075
  6. 1200 H4

1. Aluminium 6063 - Properties Of Aluminium

6063 is often referred to as architectural aluminum for two reasons - firstly, it's surface finish is far smoother than other available alloys, and secondly, its strength is much less (approx. half the strength of 6061),meaning it is well suited to applications where ultimate strength is not a requirement.

6063 is classed as "Good" for forming and cold working requirements, "Excellent" for anodizing, and "Fair" for machining.

6063-T52 Aluminum
Minimum Properties Ultimate Tensile Strength, psi 27,000
Yield Strength, psi 21,000
Brinell Hardness 60
Chemistry Aluminum (Al) 97.5% max
Chromium (Cr) 0.1% max
Copper (Cu) 0.1% max
Iron (Fe) 0.35% max
Magnesium (Mg) 0.45 - 0.90%
Manganese (Mn) 0.1% max
Silicon (Si) 0.2 - 0.6%

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2. Aluminium 6261

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3. Aluminium 5083

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4. Aluminium 6082

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5. Aluminium 7075

7075 Aluminum

7075 is the "aircraft grade" aluminum that we carry at Metals Centre. Its main alloying ingredients are copper and zinc, which mean it's one of the highest-strength aluminum alloys available. Simply put, its normal strength in a T6 temper will out perform most mild steels.

7075 also has fair-to-good ratings for corrosion resistance , ,anodizing response and machinability. Generaly speaking it is not considered to be weldable.
7075-T6 Aluminum
Physical and Mechanical Properties Ultimate Tensile Strength, psi 83,000
Yield Strength, psi 73,000
Brinell Hardness 150
Rockwell Hardness B87
Chemistry Aluminum (Al) 87.1 - 91.4%
Zinc (Zn) 5.1 - 6.1% max
Copper (Cu) 1.2 - 2.0%
Chromium (Cr) 0.18 - 0.28%
Iron (Fe) 0.5 max
Magnesium (Mg) 2.1 - 2.9%
Manganese (Mn) 0.3% max

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6. Aluminium 1200 H4

This has been replaced by a new designation

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Metals Centre
18 John St
Unit C1, John st Warehouse
Selby ext. 11
South Africa

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