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
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Metal & Alloy Bars

Aluminum Rectangles - Series 2024
Metal & Alloy Bars

Aluminum Rectangles - Series 2024
Metal & Alloy Bars

Aluminum Rectangles - Series 2024
Metal & Alloy Bars

Aluminum Rectangles - Series 2024
Metal & Alloy Bars

Aluminum Rectangles - Series 2024
Material N/A Aluminum
Shapeform N/A Rectangles
Series N/A 2024-T4
Grade N/A 2024
Temper N/A T4
Size N/A 1/8 x 1/2 inches N/A 1/8 x 5/8 inches N/A 1/8 x 3/4 inches N/A 1/8 x 1 inches N/A 1/8 x 1 1/4 inches
Working Decimal Equivalent N/A 0.125 x 0.500 inches3.175 x 12.700 mm N/A 0.125 x 0.625 inches3.175 x 15.875 mm N/A 0.125 x 0.750 inches3.175 x 19.050 mm N/A 0.125 x 1.000 inches3.175 x 25.400 mm N/A 0.125 x 1.250 inches3.175 x 31.750 mm
Width N/A 1/8 inches
Length N/A 1/2 inches N/A 5/8 inches N/A 3/4 inches N/A 1 inches N/A 1 1/4 inches
Estimated Weight N/A 0.0750 lbs/ft0.1116123 kg/m N/A 0.938 lbs/ft1.395897832 kg/m N/A 0.1125 lbs/ft0.16741845 kg/m N/A 0.1500 lbs/ft0.2232246 kg/m N/A 0.1875 lbs/ft0.27903075 kg/m
Estimated Weight per 12' Bar N/A 0.900 lbs0.40823316 kg N/A 1.125 lbs0.51029145 kg N/A 1.350 lbs0.61234974 kg N/A 1.800 lbs0.81646632 kg N/A 2.250 lbs1.0205829 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 20
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.