Temper Types
The most common temper for 6061 aluminium is:
- T6
Properties
Chemical Composition
Alloy 6061
BS EN 573-3
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
BS EN 755-2
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
Fabrication
Process | Rating |
---|---|
Workability - Cold | Good |
Machinability | Acceptable |
Weldability
Process | Rating |
---|---|
Weldability - Gas | Good |
Weldability - Arc | Very Good |
Weldability - Resistance | Good |
Brazability | Good |
Solderability | Good |