Strength in numbers

Aluminium Alloy   |   BS-L

L112 T6


Packaging: containers, foils, collapsible tubes, radiator tubes, wide jar closures, printing plates (offset). Strip for heat exchanger, boilermaking. Insulation foils. Kitchenware. Chemical and food industry equipment, containers. Automotive trim, light reflectors. Architecture. Vessels, piping.

Characteristic Properties:
Very good corrosion resistance. Very good weldability (lowered strength values in the zone of welding). 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 L112(1971)
Alloy L112
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
Zinc (Zn) 0.2 max
Titanium (Ti) 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

Heat Treatment: Forging Stock:Cast billets & slabs for hot working & extruded bars,sections and hot rolled plate for forging shall be supplied non heat treated. Forgings:Unless otherwise agreed in accordance with BS L100,Forgings shall be supplied solution treated and precipitation treated. Forgings shall be heat treated as follows: Solution treat by heating uniformly at a temperature between 510-540C and quenching in water at a temperature not exceeding 70C.

Temper Types

The most common temper for L112-6082 aluminium forging stock is:

  • T6

Supplied Forms

L112-6082 T6 aluminium is supplied as forging stock from cast billet, extrusions or rolled plate

  • Forgings
  • Bar
  • Castings
  • Extrusions
  • Plate

Generic Physical Properties

Physical Property Value
Density 2.71 g/cm³
Melting Point 650 °C
Thermal Expansion 23.10 x10^-6 /K
Modulus of Elasticity 70 GPa
Thermal Conductivity 167-216 W/m.K
Precipitation treat by heating uniformly at a temperature between 165-195C for 3-12 hours. This specification cover forging stock and forgings of aluminium-magnesium-silicon-manganese alloy,solution treated and precipitation treated, suitable for welding. The titanium value shown in the Chemical Composition applies to titanium and/or other grain elements.

Mechanical Properties

BS L112(1971)
Forging Stock -
Mechanical Property Value
Hardness Brinell 90 Min HB
Tensile Strength 295 Min N/mm2
Elongation A 8 Min %
0.2% Proof Stress 255 Min N/mm2

The values shown in the Mechanical Properties apply to test samples in all sizes prepared by forging,which represent extruded forging stock, which represent extruded forging stock and forgings made from cast billets, hot rolled plate & extruded stock) & to test samples in sizes up to & incl 20mm prepared by machining,which represents extruded forging stock. Different values,applicable to machined test samples in additional sizes for extruded forging stock are shown in the specification