Strength in numbers

Aluminium Alloy   |   BS-L

L115 T651 Plate


Aluminium alloy L115 – 6082T6 is a medium strength alloy with excellent corrosion resistance. It has the highest strength of the 6000 series alloys. Alloy 6082 is known as a structural alloy. In plate form, 6082 is the alloy most commonly used for machining. As a relatively new alloy, the higher strength of 6082 has seen it replace 6061 in many applications. The addition of a large amount of manganese controls the grain structure which in turn results in a stronger alloy.
In T6 temper, the alloy machines well.

Chemical Composition

BS L115(1971)
Alloy L115
Chemical Element % Present
Aluminium (Al) balance
Lead (Pb) 0.05 max
Tin (Sn) 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

Alloy Designations

Aluminium alloy L115 has similarities to the following standard designations and specifications but may not be a direct equivalennt:


Temper Types

The most common temper for L115 – 6082 aluminium is:

  • T651

Supplied Forms

L115-6082 T651 aluminium is supplied in plate.

  • Plate

Generic Physical Properties

Physical Property Value
Density 2.70 g/cm³
Melting Point 555 °C
Thermal Expansion 24 x10^-6 /K
Modulus of Elasticity 70 GPa
Thermal Conductivity 180 W/m.K
Electrical Resistivity 0.038 x10^-6 Ω .m

Mechanical Properties

BS L115(1971)
Plate - Up to and inc. 25mm
Mechanical Property Value
Tensile Strength 295 Min N/mm2
Elongation A 8 Min %
0.2% Proof Stress 240 Min N/mm2

These Mechanical Properties apply to Plate in the T651 temper