Aluminium 5083 Alloy
Aluminium 5083 Alloy
Aluminium 5083 Alloy
This is an aluminium alloy with magnesium and a very small amount of manganese and chromium. It has a high resistance to corrosion by seawater and chemicals.
Alloy 5083 retains excellent strength after welding. It has the highest strength of the non-heat treatable alloys it has an Ultimate Tensile Strength of 317 MPa or 46000 psi and a Tensile Yield Strength of 228 MPa or 33000 psi. It is not the chosen alloy for use in temperatures in excess of 65 °C
Alloy also is known as
Alloy 5083 can also be referred to as the following grades and specifications but they may not always be a direct equivalent.
GM41
A95083
AlMG4.5Mn
Fabrication
Work-ability – Cold: Average
Maintainability: Poor
Temper Types
The most common tempers for 5083 aluminium are:
- O - Soft
- H111
- H32
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Weldability
Weldability
When welding 5083 to itself or another alloy from the same group, the recommended filler metal is 5183. Other suitable fillers are 5356 and 5556.
Weldability – Gas: Average
Weldability – Arc: Excellent
Weldability – Resistance: Excellent
Brazability: Poor
Solderability: Poor
Chemical Composition
5083 Alloy
| Chemical Element | % Present |
| Manganese (Mn) | 0.40 - 1.00 |
| Iron (Fe) | 0.40 max |
| Copper (Cu) | 0.10 max |
| Magnesium (Mg) | 4.00 - 4.90 |
| Silicon (Si) | 0.0 - 0.40 |
| Zinc (Zn) | 0.0 - 0.10 |
| Chromium (Cr) | 0.05 - 0.25 |
| Titanium (Ti) | 0.05 - 0.25 |
| Other (Each) | 0.0 - 0.05 |
| Others (Total) | 0.0 - 0.15 |
| Aluminium (Al) | Balance |
Properties
Properties
| Physical Property | Value |
| Density | 265 g/cm³ |
| Melting Point | 570 °C |
| Thermal Expansion | 25 x10^-6 /K |
| Modulus of Elasticity | 72 GPa |
| Thermal Conductivity | 121 W/m.K |
| Electrical Resistivity | 0.058 x10^-6 Ω .m |
Plate - 6.3mm to 80mm
| Mechanical Property | Value |
| Proof Stress | 115 Min MPa |
| Tensile Strength | 270 - 345 MPa |
| Hardness Brinell | 75 HB |
Plate - 80mm to 120mm
| Mechanical Property | Value |
| Proof Stress | 110 Min MPa |
| Tensile Strength | 260 Min MPa |
| Hardness Brinell | 70 HB |
| Elongation A | 12 Min % |