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2024-T861 Sheet: MIL-HDBK-5J Design Allowables

Material classAluminum
Alloy / temper / form2024 / T861 / Sheet
SpecificationsAMS-QQ-A-250/4
HandbookMIL-HDBK-5J, 31 January 2003, section 3.2.3.0, Table 3.2.3.0(b) (pdf page 73 of the chapter file)
Dimension bands2
Density2768 kg/m³

Design Mechanical and Physical Properties (room temperature)

Converted from the handbook table (ksi, Msi, lb/in³) and rounded to 4 significant figures; dimension bands in inches with mm in parentheses. Bases: A and B are statistical minimums (99 % and 90 % probability at 95 % confidence), S the specification minimum. Grain directions: L longitudinal, LT long transverse, ST short transverse.

Dimension band0.020–0.062 in (0.508–1.575 mm)0.063–0.249 in (1.6–6.325 mm)
SpecificationAMS-QQ-A-250/4AMS-QQ-A-250/4
BasisSS
Ftu, MPaL489.5496.4
LT482.6489.5
Fty, MPaL434.4461.9
LT427.5455.1
Fcy, MPaL434.4461.9
LT448.2475.7
Fsu, MPaL275.8275.8
LT275.8275.8
Fbru (e/D = 1.5), MPaL744.6758.4
LT744.6758.4
Fbru (e/D = 2.0), MPaL965.3979.1
LT965.3979.1
Fbry (e/D = 1.5), MPaL620.5661.9
LT620.5661.9
Fbry (e/D = 2.0), MPaL723.9772.2
LT723.9772.2
e, %L……
LT34
E, GPa72.3972.39
Ec, GPa73.7773.77
G, GPa27.5827.58
ν0.330.33
ρ, kg/m³27682768

Effect of Temperature

Percent of the room-temperature value against temperature, digitized from the handbook figures (the shortest exposure of each figure, every 10 °F). Strength curves give the allowable at temperature; "after exposure" curves give the room-temperature property after a soak at that temperature.

Strength allowables at temperature, percent of room temperature

Moduli at temperature

Elongation and exposure effects

°CF_tuF_tyF_cyF_suF_bruF_bry
3897.997.597.498.598.499.6
9389.390.188.79092.597.2
14981.682.882.480.484.392.1
20471.169.772.568.371.979.1
2650.949.247.550.654.556.6
31628.825.321.624.829.932.9

Factors in percent of the room-temperature allowable.

Other 2024 Tables

Source and Use

U.S. Department of Defense (2003). Metallic Materials and Elements for Aerospace Vehicle Structures. MIL-HDBK-5J, 31 January 2003 (public domain). The values are the handbook's design allowables as extracted from the chapter tables; check the printed table before use in a certified analysis, and note that MIL-HDBK-5J was superseded by MMPDS, whose later editions may differ. No warranty is given.