Aluminum Hexagons - Series 2024

2024 is one of the best known of the high strength aluminum alloys. With its high strength and excellent fatigue resistance, it is used to advantage on structures and parts where good strength-to-weight ratio is desired. It is readily machined to a high finish. It is readily formed in the annealed condition and may be subsequently heat treated. Arc or gas welding is generally not recommended, although this alloy may be spot, seam or flash welded. Since corrosion resistance is relatively low, 2024 is commonly used with an anodized finish or in clad form ("Alclad") with a thin surface layer of high purity aluminum. Applications: aircraft structural components, aircraft fittings, hardware, truck wheels and parts for the transportation industry.

2024-T4 2024-T351
AMS-QQ-A-225/6 AMS 4120 ASTM B211 UNS A92024

Unit of Measure

Items	2024-T4H-1875 Aluminum Hexagons - Series 2024	2024-T4H-250 Aluminum Hexagons - Series 2024	2024-T4H-3125 Aluminum Hexagons - Series 2024	2024-T4H-375 Aluminum Hexagons - Series 2024	2024-T351H-500 Aluminum Hexagons - Series 2024
Material	N/A Aluminum
Shapeform	N/A Hexagons
Series	N/A 2024-T4	N/A 2024-T4	N/A 2024-T4	N/A 2024-T4	N/A 2024-T351
Grade	N/A 2024
Temper	N/A T4	N/A T4	N/A T4	N/A T4	N/A T351
Size	N/A 3/16 inches	N/A 1/4 inches	N/A 5/16 inches	N/A 3/8 inches	N/A 1/2 inches
Size	N/A 0.1875 inches4.7625 mm	N/A 0.25 inches6.35 mm	N/A 0.3125 inches7.9375 mm	N/A 0.375 inches9.525 mm	N/A 0.5 inches12.7 mm
Estimated Weight	N/A 0.0365 lbs/ft0.054317986 kg/m	N/A 0.065 lbs/ft0.09673066 kg/m	N/A 0.1015 lbs/ft0.151048646 kg/m	N/A 0.1461 lbs/ft0.2174207604 kg/m	N/A 0.2598 lbs/ft0.3866250072 kg/m
Estimated Weight per 12' Bar	N/A 0.438 lbs0.1986734712 kg	N/A 0.779 lbs0.3533484796 kg	N/A 1.218 lbs0.5524755432 kg	N/A 1.754 lbs0.7956010696 kg	N/A 3.118 lbs1.4143011032 kg
ASTM Specification	N/A AMS 4120 AMS-QQ-A-225/6 ASTM B211 UNS A92024
Ultimate Strength	N/A 68 ksi
Yield Strength	N/A 47 ksi
Elongation percent in 2 inches	N/A 19
Hardness Brinnel Number	N/A 120
Ultimate Shearing Strength	N/A 41 ksi
Fatigue Endurance Limit¹	N/A 20 ksi
Modulus of Elasticity²	N/A 10.6 x 10⁴ ksi
Resistance to Corrosion - General³	N/A D
Stress Corrosion Cracking⁴	N/A C
Workability (Cold)⁵	N/A C
Mechinability	N/A B
Brazeability⁶	N/A D
Gas Weldability⁷	N/A C
Arc Weldability⁸	N/A B
Resistance Spot and Seam Weldability⁹	N/A B
Applications	N/A Truck wheels, screw machine products, aircraft structures
Density	N/A 0.100 lbs/in³
Specific Gravity	N/A 2.78
¹ Based on 500,000.000 cycles of completely reversed stress using the R. R. Moore-type of machine and specimen. ² Average of tension and compression moduli. Compression modulus is about 2 percent greater than tension modulus. ³ Ratings A through E are relative ratings in decreasing order of merit, based on exposures to sodium chloride solution by intermittent spraying or immersion. Alloys with A and B ratings can be used in industrial and seacoast atmospheres without protection. Alloys with C, D and E ratings generally should be protected at least on faying surfaces. In relatively thick sections, the rating would be E ⁴ Stress-corrosion cracking ratings are based on service experience and on laboratory tests of specimens exposed to the 3.5% sodium chloride alternate immersion test. ⁵ Ratings A through D for Workability (cold), and A through E for Machinability, are relative ratings in decreasing order of merit. ⁶ Ratings A through D for Weldability and Brazeability are relative ratings. ⁷ A = Generally weldable by all commercial procedures and methods. B = Weldable with special techniques or for specific applications that justify preliminary trials or testing to develop welding procedure and weld performance. C = Limited weldability because of crack sensitivity or loss in resistance to corrosion and mechanical properties. ⁸ A = Generally weldable by all commercial procedures and methods. B = Weldable with special techniques or for specific applications that justify preliminary trials or testing to develop welding procedure and weld performance. C = Limited weldability because of crack sensitivity or loss in resistance to corrosion and mechanical properties. ⁹ A = Generally weldable by all commercial procedures and methods. B = Weldable with special techniques or for specific applications that justify preliminary trials or testing to develop welding procedure and weld performance. C = Limited weldability because of crack sensitivity or loss in resistance to corrosion and mechanical properties.