Aluminum 5086
Material Data Sheet
5086 is an aluminum alloy, primarily alloyed with magnesium. It is not heat treatable but instead is strengthened by strain hardening or cold mechanical working of the material.
Since heat treatment doesn’t strongly affect the strength, 5086 can be readily welded (especially by means of electric arc welding) and retains most of its mechanical strength. The good results with welding and good corrosion properties in seawater make 5086 extremely popular for vessel gangways, boat building, and yacht hulls.
Aluminum 5086 alloy is annealed at 343°C (650°F) and then cooled in air. It has excellent cold working characteristics in the O temper and somewhat less in the H38 and H36 tempers. 5086 Aluminum has good machining characteristics in the strain hardened tempers, which include H38, H36, and H34.
| Element | Content (%) |
|---|---|
| Aluminum, Al | 93.0 – 96.3 |
| Magnesium, Mg | 3.5 – 4.5 |
| Mangnese, Mn | ≤ 0.2 – 0.7 |
| Iron, Fe | ≤ 0.50 |
| Silicon, Si | ≤ 0.40 |
| Chromium, Cr | ≤ 0.25 |
| Zinc, Z | ≤ 0.25 |
| Titanium, Ti | ≤ 0.15 |
| Copper, Cu | ≤ 0.1 |
| Property | Metric | Imperial |
|---|---|---|
| Density | 2.66 g/cc | 0.0961 lb/in³ |
| Melting Point | 585-641°C | 1085-1185°F |
| Property | Metric | Imperial |
|---|---|---|
| Hardness, Brinell | 78 | 78 |
| Hardness, Knoop | 101 | 101 |
| Hardness, Vickers | 88 | 88 |
| Ultimate Tensile Strength | 290 MPa | 42000 psi |
| Tensile Yield Strength | 207 MPa | 30000 psi |
| Elongation at Break | 12% | 12% |
| Modulus of Elasticity | 71 GPa | 10300 ksi |
| Compressive Modulus | 72.4 GPa | 10500 ksi |
| Ultimate Bearing Strength | 552 MPa | 80100 psi |
| Bearing Yield Strength | 331 MPa | 48000 psi |
| Poisson’s Ratio | 0.33 | 0.33 |
| Fatigue Strength | 150 MPa | 21800 psi |
| Frature Toughness | 49 MPa-m½ | 44.6 ksi-in½ |
| Machinability | 30% | 30% |
| Shear Modulus | 26.4 GPa | 3830 ksi |
| Shear Strength | 175 MPa | 25400 psi |
| Property | Metric | Imperial |
|---|---|---|
| CTE, linear 68°F | 23.8 µm/m-°C | 13.2 µin/in-°F |
| CTE, linear 250°C | 25.8m/m-°C | 14.3 µin/in-°F |
| Specific Heat Capacity | 0.9 J/g-°C | 0.215 BTU/lb-°F |
| Thermal Conductivity | 125W/m-K | 870TU-in/hr-ft²-°F |
| Solidus | 585°C | 1085 °F |
| Liquidus | 641°C | 1185 °F |
- ASTM B209
- ASTM B210
- ASTM B221
- ASTM B241
- ASTM B313
- ASTM B345
- ASTM B361
- ASTM B547
- ASTM B548
- MIL C-26094
- MIL S-24149/2
- QQ A-200/5
- QQ A-250/7
- SAE J454
- QQ WW-T-700/5
- Missile components
- Seawater applications
- Unfired and welded pressure vessels
- Auto aircraft cryogenics
- TV towers
- Drilling rigs
- Transportation equipment
- Tanks and marine components
- Vessel gangways
