Aluminium, Commercial Alloy
Aluminium Alloy 6061 T6 Extrusions
Most versatile heat treatable aluminium alloy.
Aluminium alloy 6061 is a medium to high strength heat-treatable alloy with a strength higher than 6005A.
It is the most versatile of the heat-treatable alloys and is typically used in heavy duty structures.
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6061 T6 Aluminium Related Specifications
| System / Standard | Country / Region | Grade / Designation |
| AA | USA | 6061-T6 |
| UNS | International | A96061 (6061-T6) |
| EN / DIN | Europe | EN AW-6061-T6 |
| EN Name | Europe | AlMg1SiCu-T6 |
| GB | China | 6061-T6 |
| JIS | Japan | A6061-T6 |
| BS | UK | 6061-T6 (extrusions) |
Properties
Chemical Composition
Alloy 6061
| Chemical Element | % Present |
| Manganese (Mn) | 0.00 - 0.15 |
| Iron (Fe) | 0.00 - 0.70 |
| Magnesium (Mg) | 0.80 - 1.20 |
| Silicon (Si) | 0.40 - 0.80 |
| Copper (Cu) | 0.15 - 0.40 |
| Zinc (Zn) | 0.00 - 0.25 |
| Titanium (Ti) | 0.00 - 0.15 |
| Chromium (Cr) | 0.04 - 0.35 |
| Other (Each) | 0.00 - 0.05 |
| Others (Total) | 0.00 - 0.15 |
| Aluminium (Al) | Balance |
Mechanical Properties
Extrusions Up to 200mm Dia. & A/F, 5mm WT for Tube and Prof
| Mechanical Property | Value |
| Proof Stress | 240 Min MPa |
| Tensile Strength | 260 Min MPa |
| Hardness Brinell | 95 HB |
General Physical Properties
| Physical Property | Value |
| Density | 2.70 g/cm³ |
| Melting Point | 650 °C |
| Thermal Expansion | 23.4 x 10-6/K |
| Modulus of Elasticity | 70 GPa |
| Thermal Conductivity | 166 W/m.K |
| Electrical Resistivity | 0.040 x 10-6 Ω .m |
Characteristics
- Very good corrosion resistance
- Very good weldability although reduced strength in the weld zone
- Medium fatigue strength
- Good cold formability in the temper T4, but limited formability in T6 temper
- Not suitable for very complex cross sections
Additional Information
Weldability
| Process | Rating |
| Weldability - Gas | Good |
| Weldability - Arc | Very Good |
| Weldability - Resistance | Good |
| Brazability | Good |
| Solderability | Good |
Fabrication
| Process | Rating |
| Workability - Cold | Good |
| Machinability | Acceptable |
