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Useful Steel Data

 

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2024:

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Disclaimer: The content of this page is for general information only and is not to be used for engineering or design. The content of this material specification page was compiled from available public sources and authorities on material properties. Although we believe the information to be corrrect, Metal Stock, Inc. is not responsible for the accuracy of any of the material specifications and only presents this data as general information for our customers.

2024 is a high strength aluminum alloy with higher strength than 2011 and adequate work ability. With its high strength and excellent fatigue resistance, it is used to advantage on parts and structures where a good strength-to-weight ratio is desired. 2024 is readily machined at high speeds and gives accurate machining detail with a high finish. 2024 in the annealed condition is easily formed and may be subsequently heat treated. 2024 has good stress corrosion cracking resistance. Since corrosion resistance is relatively low, 2024 is commonly used with an anodized finish or in clad form, with a thin surface layer of high purity aluminum for increased corrosion resistance. Electrical conductivity is 35% of copper.

2024 Drawn Bar conforms to ASTM B211, AMS 4120, QQ-A-225/6 2024 Extruded Bar Conforms to ASTM B221,
QQ-A-200/3.

2024 Plate conforms to ASTM B209, AMS 4035, QQ-A-250/4.

 

General Information about 2024:


APPLICATIONS:

2024 is commonly used for structural components, couplings, hydraulic valve bodies, fuse parts, gears and shafts, worm gears, pistons, rectifier parts, missile parts, munitions, fasteners, cap nuts, bolts, hardware, truck wheels, transportation industry parts, computer parts, clock parts, veterinary and orthopedic equipment, and commonly in the aircraft industry for aircraft fittings, fuselage structurals, wing tension members, shear webs and ribs and structural areas where stiffness, fatigue performance, and good strength-to-weight ratio is required.

MACHINING AND WELDING:

2024 in the T4 and T351 condition has a machinability rating of 90% when compared to 2011 at 100%. Machines to a high finish. 2024 can be formed in the annealed condition. 2024 can be forged or hot worked; however, subsequent heat treatment is necessary in order to retain reasonable corrosion resistance. 2024 is a very poor choice for welding. Gas and arc welding is not recommended. 2024 can be spot welded or seam resistance/flash welded. Brazing and soldering is not recommended. Generally, welding should be avoided because of the degradation of corrosion resistance that occurs as a result of the weld heat.

HEAT TREATING - Forging, Normalizing, and Annealing:

2024 is an age-hardening aluminum alloy and responds to heat treatment to accomplish the strengthening (aging). The T4 condition is attained by a 920°F heating followed by a cold water quench and aging at room temperature. T6 is attained by the same 920°F and quenched followed by a 375°F for 10 hours and air cooling.

ANNEALING:

Annealing is done at 750° - 800°F for at least two hours at temperature, followed by slow cooling in furnace. This will anneal 2024 from a heat treated condition. Annealing 2024 between cold working operations may be done at 650°F for two hours, followed by air cool.

AGING:

The T4 condition is attained by a 920°F heating and cold water quenching. Aging then occurs at room temperature. For T6 condition, use the same 920°F and water quenching procedure then reheat to 37°F for 10 hours and air cool. Other conditions are a result of the T4 condition followed by controlled amounts of cold working.

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