Aluminum HE 30 is a famous aluminium alloy used in numerous applications. It is a lightweight material with excellent corrosion resistance, making it ideal for various industries. In this blog post, we’ll closely examine what Aluminum HE 30 is, its composition, physical and mechanical properties, uses hardness, heat treatment, welding, and corrosion resistance.
Aluminum HE 30 Composition
Aluminum HE 30 is an aluminium alloy that contains magnesium and silicon as the primary alloying elements. The typical composition is 4.5-6% magnesium and 0.9-1.5% silicon. Additionally, it may contain small amounts of copper, iron, manganese, and zinc. This alloy exhibits a high strength-to-weight ratio, good formability, and excellent weldability.
| Chemical Element | % Present |
| Manganese (Mn) | 0.40 – 1.00 |
| Iron (Fe) | 0.0 – 0.50 |
| Magnesium (Mg) | 0.60 – 1.20 |
| Silicon (Si) | 0.70 – 1.30 |
| Copper (Cu) | 0.0 – 0.10 |
| Zinc (Zn) | 0.0 – 0.20 |
| Titanium (Ti) | 0.0 – 0.10 |
| Chromium (Cr) | 0.0 – 0.25 |
| Other (Each) | 0.0 – 0.05 |
| Others (Total) | 0.0 – 0.15 |
| Aluminium (Al) | Balance |
Aluminum HE 30 Physical Properties
The density of Aluminum HE 30 is approximately 2.7 g/cm³, making it one of the lightweight aluminium alloys. It has a melting point of 595°C, a thermal conductivity of 166 W/(m·K), and a coefficient of thermal expansion of 23.2 × 10^-6/K at 20°C. Additionally, it boasts high electrical conductivity, about 47% of copper.
| Physical Property | Value |
| Density | 2.70 g/cm³ |
| Melting Point | 555 °C |
| Thermal Expansion | 24 x10^-6 /K |
| Modulus of Elasticity | 70 GPa |
| Thermal Conductivity | 180 W/m.K |
| Electrical Resistivity | 0.038 x10^-6 Ω .m |
Aluminum HE 30 Mechanical Properties
Aluminum HE 30 displays high strength and good mechanical properties, making it ideal for aerospace and defence applications. The yield strength of this alloy ranges from 240-290 MPa, and its ultimate tensile strength is 310-360 MPa. Its elongation at break is 8-12%, and its hardness is between 70-90 HRB. Moreover, it exhibits good fatigue resistance and is exceptionally resistant to thermal cracking.
| Property | Value |
|---|---|
| Proof Stress | 85 Max MPa |
| Tensile Strength | 150 Max MPa |
| Hardness Brinell | 40 HB |
Aluminum HE 30 Equivalents
- AA6082
- HE30
- DIN 3.2315
- EN AW-6082
- ISO: Al Si1MgMn
- A96082
Aluminum HE 30 Uses
Due to its excellent mechanical properties, corrosion resistance, and lightweight, Aluminum HE 30 finds use in a wide range of applications. Its typical applications include aerospace components and structures, defence applications, structural parts for automobiles and trucks, and marine applications such as shipbuilding and sporting goods.
Aluminum HE 30 Heat Treatment
The heat treatment process is crucial in optimizing the mechanical properties of Aluminum HE 30. The T6 tempering treatment involves heating the metal to 510-530°C and quenching it in water. This process results in the precipitation hardening of magnesium silicide particles, which improves the strength of the alloy.
Aluminum HE 30 Welding
Aluminum HE 30 boasts excellent weldability and can be welded using arc welding, TIG welding, and MIG welding methods. However, it is essential to adhere to best practices when soldering the alloy to avoid causing damage to its mechanical properties.
Aluminum HE 30 Corrosion Resistance
Aluminum HE 30 offers excellent corrosion resistance in fresh and saltwater environments. It forms a protective oxide layer that shields the alloy from oxidation and corrosion. However, the protective layer may rust over time if exposed to harsh chemicals or high temperatures.
Conclusion
In conclusion, Aluminum HE 30 is a special aluminium alloy with various properties that make it ideal for numerous applications. Its lightweight, high strength, excellent corrosion resistance, and good formability make it a preferred option in the aerospace, automotive, marine, and sporting goods industries. Its mechanical properties can be optimized through heat treatment, and its weldability makes joining other parts easier. Overall, Aluminum HE 30 is a versatile material worth considering for various engineering applications.
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