Strength in numbers

Aluminium Alloy   |   BS-L

L111 T6511 Bar

Commercial6082 - Obsolete

Characteristic Properties:
Very good corrosion resistance. Very good weldability (lowered strength values in the weld zone). Good machinability. Good cold formability in T4 temper after a stabilizing heat treatment. Heat treatable medium high strength construction. Alloy with a strength somewhat higher than 6061. Medium high fatigue strength. Not suitable for complex sections.

Chemical Composition

BS L111(1971)
Alloy L111
Chemical Element % Present
Aluminium (Al) balance
Tin (Sn) 0.05 max
Lead (Pb) 0.05 max
Copper (Cu) 0.1 max
Nickel (Ni) 0.1 max
Titanium (Ti) 0.2 max
Zinc (Zn) 0.2 max
Chromium (Cr) 0.25 max
Iron (Fe) 0.5 max
Manganese (Mn) 0.4 - 1
Magnesium (Mg) 0.5 - 1.2
Silicon (Si) 0.7 - 1.3

Temper Types

The most common temper for L111-6082 aluminium are:

  • T4
  • T5
  • T6
  • T6511

Supplied Forms

L111-6082 aluminium is supplied in Bar and Extruded Sections.

  • Bar
  • Extrusions

Generic Physical Properties

Physical Property Value
Density 2710 g/cm³
Melting Point 650 °C
Thermal Expansion 23.10 x10^-6 /K
Modulus of Elasticity 70000 GPa
Thermal Conductivity 167-216 W/m.K

Mechanical Properties

The Mechanical Properties values shown apply to material in the T6511 temper.

In the table, 'Dimension' means diameter or minor sectional dimension.

Dimension (mm) Proof Strength Tensile Strength Elongation
Up to & incl. 20 255 Min 295 Min 7% Min
Over 20 up to & incl. 150 270 Min 310 Min 8% Min
Over 150 up to & incl. 200 240 Min 280 Min 5% Min