Aluminum 6061-T8
Subcategory: 6000 Series Aluminum Alloy; Aluminum Alloy; Metal; Nonferrous Metal
Close Analogs:
Composition Notes:
Aluminum content reported is calculated as remainder.
Composition information provided by the Aluminum Association and is not for design.
Key Words: al6061, Aluminium 6061-T8; UNS A96061; ISO AlMg1SiCu, AD-33 (Russia); AA6061-T8
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Material Notes:
Weldability = A; Stress Corrosion Cracking Resistance = A; General Corrosion Resistance = B (A = best; E = worst). General 6061 characteristics and uses: Excellent joining characteristics, good acceptance of applied coatings. Combines relatively high strength, good workability, and high resistance to corrosion; widely available. The T8 and T9 tempers offer better chipping characteristics over the T6 temper.
Uses: Aircraft fittings, camera lens mounts, couplings, marines fittings and hardware, electrical fittings and connectors, decorative or misc. hardware, hinge pins, magneto parts, brake pistons, hydraulic pistons, appliance fittings, valves and valve parts.
Some data provided by Alcoa.
Data points with the AA note have been provided by the Aluminum Association, Inc. and are NOT FOR DESIGN.
Physical Properties
| Physical Properties | Metric | English | Comments |
| Density | 2.7 g/cc | 0.0975 lb/in³ | AA; Typical |
Mechanical Properties
| Hardness, Brinell | 120 | 120 | 500 kg load/10 mm ball |
| Hardness, Knoop | 150 | 150 | Estimated from Brinell |
| Hardness, Rockwell A | 46.8 | 46.8 | Estimated from Brinell |
| Hardness, Rockwell B | 75 | 75 | Estimated from Brinell |
| Hardness, Vickers | 136 | 136 | Estimated from Brinell |
| Tensile Strength, Ultimate | Min 310 MPa | Min 45000 psi | |
| Tensile Strength, Yield | Min 276 MPa | Min 40000 psi | |
| Elongation at Break | 8 % | 8 % | |
| Modulus of Elasticity | 69 GPa | 10000 ksi | Average of Tension and Compression. In Aluminum alloys, the compressive modulus is typically 2% greater than the tensile modulus |
| Poisson’s Ratio | 0.33 | 0.33 | Estimated from trends in similar Al alloys. |
| Machinability | 50 % | 50 % | 0-100 Scale (A=90; B=70; C=50; D=30; E=10) |
| Shear Modulus | 26 GPa | 3770 ksi | Estimated from similar Al alloys. |
| Shear Strength | 185 MPa | 26800 psi | Estimated from ultimate tensile strength |
Electrical Properties
| Electrical Resistivity | 3.7e-006 ohm-cm | 3.7e-006 ohm-cm |
Thermal Properties
| CTE, linear 68°F | 23.6 µm/m-°C | 13.1 µin/in-°F | AA; Typical; Average over 68-212°F range. |
| CTE, linear 250°C | 25.2 µm/m-°C | 14 µin/in-°F | Estimated from trends in similar Al alloys. 20-300°C. |
| Specific Heat Capacity | 0.896 J/g-°C | 0.214 BTU/lb-°F | |
| Thermal Conductivity | 170 W/m-K | 1180 BTU-in/hr-ft²-°F | |
| Melting Point | 582 – 652 °C | 1080 – 1205 °F | AA; Typical range based on typical composition for wrought products 1/4 inch thickness or greater; Eutectic melting can be completely eliminated by homogenization. |
| Solidus | 582 °C | 1080 °F | AA; Typical |
| Liquidus | 652 °C | 1205 °F | AA; Typical |
Processing Properties
| Solution Temperature | 529 °C | 985 °F | |
| Aging Temperature | 160 °C | 320 °F | Rolled or drawn products; hold at temperature for 18 hr |
| Aging Temperature | 177 °C | 350 °F | Extrusions or forgings; hold at temperature for 8 hr |