Aluminum 5086
5086 is an aluminum alloy made primarily of magnesium. It cannot be heat treated, but strengthens the material through strain hardening or cold machining.
Since heat treatment has little effect on strength, the 5086 is easy to weld (especially by arc welding) and retains most of its mechanical strength. Good welding results and good corrosive properties in seawater make the 5086 very popular in ship gangways, shipbuilding and yacht hulls.
Chemical Composition
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 |
Physical Properties
Property | Metric | Imperial |
Density | 2.66 g/cc | 0.0961 lb/in³ |
Melting Point | 585-641°C | 1085-1185°F |
Mechanical Properties
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 |
Thermal Properties
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 |
Specifications
· 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
Applications
· Missile components
· Seawater applications
· Unfired and welded pressure vessels
· Auto aircraft cryogenics
· TV towers
· Drilling rigs
· Transportation equipment
· Tanks and marine components
· Vessel gangways
otherproduct