Resources

Strength in numbers

Aluminium Alloy   |   BS-L

L97 T351 Plate

Commercial2024 - Obsolete

Applications:
High strength fabricated or machined items in aircraft industries, general engineering, machinery, military equipment, truck wheels. Screw machine products. Structural applications. Rivets.

Characteristic Properties:
Heat treatable alloy. Very good machining characteristics. High strength alloy with a strength slightly higher than 2014(A) and 2017A and 2030. High fatigue strength. Suitable for welding only by resistance welding. Corrosion resistance only with cladding or other protection.


Chemical Composition

BS 2L97(1971)
Alloy L97
Chemical Element % Present
Aluminium (Al) balance
Nickel (Ni) 0.05 max
Lead (Pb) 0.05 max
Tin (Sn) 0.05 max
Chromium (Cr) 0.1 max
Titanium + Zirconium (Ti+Zr) 0.2 max
Zinc (Zn) 0.2 max
Iron (Fe) 0.5 max
Silicon (Si) 0.5 max
Manganese (Mn) 0.3 - 0.9
Magnesium (Mg) 1.2 - 1.8
Copper (Cu) 3.8 - 4.9

Alloy Designations

Aluminium alloy L97 - 2024 is covered by standard BS 2L97 (1971)


Temper Types

The most common temper for L97 - 2024 aluminium plate is:

  • T351

Supplied Forms

L97 - 2024 aluminium is supplied in the following forms:

  • Plate

Generic Physical Properties

Physical Property Value
Density 2790 g/cm³
Melting Point 640 °C
Thermal Expansion 23.10 x10^-6 /K
Modulus of Elasticity 73000 GPa
Thermal Conductivity 121 W/m.K

Mechanical Properties

Thickness (mm) Proof Strength (Min) Tensile Strength (Min) Elongation % (Min)
Over 6 up to & incl. 12.5 280 430 10
Over 12.5 up to & incl. 25 280 430 10
Over 25 up to & incl. 40 280 420 9
Over 40 up to & incl. 63 270 410 9
Over 63 up to & incl. 90 270 410 8
Over 90 up to & incl. 115 270 400 8
Over 115 up to & incl. 140 260 390 7