(anonymous)
EN AW-5083
Product Description
Aluminium alloy 5083 belongs to the 5000-series, characterised by the addition of magnesium (~4.5%) and manganese. It offers outstanding corrosion resistance, excellent weldability, and suitability for cryogenic service to −196 °C. Residual stresses in the stock material may be released during machining of thin features.
$$ -196~^{\circ}\mathrm{C} $$
Key Characteristics
• Excellent corrosion resistance — seawater and aggressive chemical environments
• Good machinability
• Excellent weldability (MIG and TIG)
• Suitable for cryogenic service to −196 °C
$$ 1-196,^{\circ}\mathrm{C} $$
• Not heat-treatable to high strength
Mechanical Properties — EN 485-2
| Tensile Strength(Rm) | 270-350MPa |
|---|---|
| Yield Strength(Rp0.2) | 125MPa(min) |
| Elongation at Break(A50) | 12%(min) |
| Hardness | ~75HB(Brinell,ISO6506) |
| Elastic Modulus(E) | ~70GPa |
| Density | 2.66g/cm3 |
| Thermal Conductivity | ~117W/m·K |
| Coeff.of Thermal Expansion | 23.7×10^{-6}/K(20-100℃) |
| Melting Range | 570-638℃ |
| Electrical Conductivity | ~29%IACS |
$$ 23.7\times10^{-6}/K(20-100^{\circ}C) $$
$$ 570-638,^{\circ}C, $$
Chemical Composition — EN 573-3
| Silicon(Si) | ≤0.40% |
|---|---|
| Iron(Fe) | ≤0.40% |
| Copper(Cu) | ≤0.10% |
| Manganese(Mn) | 0.40-1.00% |
| Magnesium(Mg) | 4.00-4.90% |
| Chromium(Cr) | 0.05-0.25% |
|---|---|
| Zinc(Zn) | ≤0.25% |
| Titanium(Ti) | ≤0.15% |
| Aluminium(Al) | Remainder |
Machining Notes
Good machinability with carbide tooling. Lower cutting speeds than 6082/7075 recommended due to tendency for built-up edge. Flood coolant advised for walls below 3 mm. Consider roughing in stages for precision parts to manage residual stress release.
Typical Applications
Shipbuilding and marine structures, offshore components, pressure vessels, cryogenic storage, military armour, bridge components, chemical processing equipment.