5083 aluminum is a high-magnesium alloy with good strength, corrosion resistance and machinability among non-heat-treatable alloys. The surface is beautiful after anodization. Good arc welding performance. The main alloying element in 5083 alloy is magnesium, which has good corrosion resistance and weldability, and medium strength.
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5083 aluminum is a high-magnesium alloy with good strength, corrosion resistance and machinability among non-heat-treatable alloys. The surface is beautiful after anodization. Good arc welding performance. The main alloying element in 5083 alloy is magnesium, which has good corrosion resistance and weldability, and medium strength. Excellent corrosion resistance makes 5083 alloy widely used in maritime applications such as ships, automobiles, aircraft welding parts, subway light rail, pressure vessels that require strict fire protection (such as liquid tankers, refrigerated trucks, refrigerated containers), refrigeration devices, TV towers, Drilling equipment, transportation equipment, missile parts, armor, etc.
Chemical Composition:
| Chemical Element | Weight (%) |
|---|---|
| Silicon | 0.4 |
| Iron | 0.4 |
| Copper | 0.1 |
| Manganese | 0.40-1.0 |
| Magnesium | 4.0-4.9 |
| Chromium | 0.05-0.25 |
| Zinc | 0.25 |
| Titanium | 0.15 |
| Others, each | 0.05 |
| Others, total | 0.15 |
| Aluminum | Balance |
Mechanical Properties:
| Alloy & Temper | Specification | Tensile Strength (MPa) | Yield Strength 0.2% Proof (MPa) | Elongation (% in 50mm) | ||
|---|---|---|---|---|---|---|
| All gauges (Note 2) | 5.0- 12.5mm | 6.31- 80.0mm | ||||
| 5083-O | B209M | 270-345 | 115-200 | 16 | ||
| 5083-H32 | B209M | 305-385 | 215 min | 12 | ||
| 5083-H116 | B928M | 305 min(1) | 215 min(1) | 10 | ||
| 5083-H321 | B928M | 305-385(1) | 215 min(1) | 10 - 12 | ||
Physical Properties :
| Alloy | Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion 20-100°C (m/m/°C) | Thermal Conductivity at 25°C (W/m.K) | Electrical Conductivity MS/m at 20°C | Electrical Resistivity (n.m) | |
|---|---|---|---|---|---|---|---|
| Equal Volume | Equal Mass | ||||||
| 5083 | 2660 | 71 | 23.8 | 117 | 17 | 57 | 59 |
Equivalent Grade:
| Alloy | UNS No | ISO | BS | DIN | |
|---|---|---|---|---|---|
| No | Name | ||||
| 5083 | A95083 | AlMg4.5Mn | N8 | 3.3547 | AlMg4.5Mn |
Possible Alternative Alloys:
| Alloy | Why it might be chosen instead of 5083 |
| 3003 | Brighter appearance required, particularly when considering treadplate. Much lower strength. |
| 5005 | Bright (decorative) anodising finish is required and lower strength is acceptable. |
| 5052 | Required as treadplate and lower strength is acceptable. |
Applications:
Shipbuilding; Railroad cars; Drilling rigs; Coachwork; Pressure vessels; Aluminium armor
