ENGINEERING STEELS + ALLOYS

6061 Aluminium

6061 Aluminium has good strength, good weldability and excellent corrosion resistance to atmospheric conditions. 6061 also has good corrosion resistance to salt water. Supplied solution heat treated and artificially aged to T6 temper.Used for Aircraft components, marine fittings, electrical fittings, valves and cycle parts.
Colour Code Stocked Sizes  

Royal Blue (Bar end)

Bar Finish 
Cold Drawn
Chemical Composition
Min. % Max %
Aluminium Balance Balance
Silicon 0.40 0.80
Manganese 0 0.15
Chromium 0.04 0.35
Iron 0 0.70
Magnesium 0.80 1.20
Zinc 0 0.25
Titanium 0 0.15
Mechanical Properties Temper T6
Condition T6
Tensile Strength Mpa 300
0.2% Proof Strength 241
Elongation on 5.65% 8
Brinell Hardness HB 95
*Material stocked generally in condition T
Check test certificate if critical for end use.
Forging
Heat to between 399°C to 482°C
Hot Working
Heat to between 260°C to 371°C
Cold Working
Can be cold worked if necessary but must be heat treated to develop optimum strength
Heat Treatment
Annealing
 Heat to 413°C for 2-3 hours, controlled cooling at a rate of 10°C/hour to 260°C then air cool
 Hardening - Solution Heat Treat
 Heat to 532°C soak for 3 hours then water quench.
 Hardening - Precipitation Hardening
 Performed at 160°C for 18 hours then for 177°C for 8 hours and air cool
 Machining
 Carbide tooling us prefered. Machining in the harden (T6) is better than in the annealed state.
 Welding
 Good welding properties by all methods

Interlloy believes the information provided is accurate and reliable. However no warranty of accuracy, completeness or reliability is given, nor will any responsibility be taken for errors or omissions.