L98 T4 Plate data sheet

Aluminium Alloy | BS-L

L98 T4 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 2L98(1971) Alloy L98
Chemical Element	% Present
Aluminium (Al)	balance
Tin (Sn)	0.05 max
Lead (Pb)	0.05 max
Nickel (Ni)	0.05 max
Chromium (Cr)	0.1 max
Zinc (Zn)	0.2 max
Titanium + Zirconium (Ti+Zr)	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

Heat Treatment Materail shall supplied solution treated, and aged at room temperature. If agreed between the manufacturer and the purchaser, the material shall be supplied in one of the following conditions, as stated on the order. As rolled Annealed Heat treatment shall be carried out as follows: Solution treat by heating at a temperature of 495C +/- 5C and quenching in water at a temperature not exceeding 40C. Age at room temperature for not less than 48 hours.

Alloy Designations

Aluminium alloy L98 - 2024 is covered by standard BS 2L98 (1971) - (now obsolete)

Temper Types

The most common temper for L98 - 2024 aluminium is:

Supplied Forms

L98 - 2024 aluminium is supplied in the following forms:

Plate

Generic Physical Properties


Physical Property	Value
Density	2.79 g/cm³
Melting Point	640 °C
Thermal Expansion	23.10 x10^-6 /K
Modulus of Elasticity	73 GPa
Thermal Conductivity	121 W/m.K

Mechanical Properties

BS 2L98(1971) Plate - 6mm to 12.5mm
Mechanical Property	Value
Elongation A50 mm	10 Min %
Tensile Strength	410 Min N/mm2
0.2% Proof Stress	260 Min N/mm2

This specification covers plate of aluminium- copper-magnesium-manganese alloy solution treated and aged at room temperature:not controlled stretched. The mechanical property values specified apply to tests carried out in the long transverse direction for material with nominal thickness over 6mm up to and including 12.5mm. Different values for additional nominal thicknesses and test conditions are shown in the specification

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Last updated 09 January 2014

Disclaimer

This Data is indicative only and as such is not to be relied upon in place of the full specification. In particular, mechanical property requirements vary widely with temper, product and product dimensions. All information is based on our present knowledge and is given in good faith. No liability will be accepted by the Company in respect of any action taken by any third party in reliance thereon.

Please note that the 'Datasheet Update' date shown above is no guarantee of accuracy or whether the datasheet is up to date.

The information provided in this datasheet has been drawn from various recognised sources, including EN Standards, recognised industry references (printed & online) and manufacturers’ data. No guarantee is given that the information is from the latest issue of those sources or about the accuracy of those sources.

Material supplied by the Company may vary significantly from this data, but will conform to all relevant and applicable standards.

As the products detailed may be used for a wide variety of purposes and as the Company has no control over their use; the Company specifically excludes all conditions or warranties expressed or implied by statute or otherwise as to dimensions, properties and/or fitness for any particular purpose, whether expressed or implied.

Advice given by the Company to any third party is given for that party’s assistance only and without liability on the part of the Company. All transactions are subject to the Company’s current Conditions of Sale. The extent of the Company’s liabilities to any customer is clearly set out in those Conditions; a copy of which is available on request.

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