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2024-T42 Extruded bar, rod, and shapes: MIL-HDBK-5J Design Allowables

Material classAluminum
Alloy / temper / form2024 / T42 / Extruded bar, rod, and shapes
SpecificationsAMS-QQ-A-200/3
HandbookMIL-HDBK-5J, 31 January 2003, section 3.2.3.0, Table 3.2.3.0(j) (pdf page 86 of the chapter file)
Dimension bands10
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 band0.000–0.249 in (0–6.325 mm), area 0–25 in2 (0–16130 mm²)0.250–0.499 in (6.35–12.67 mm), area 0–25 in2 (0–16130 mm²)0.500–0.749 in (12.7–19.02 mm), area 0–25 in2 (0–16130 mm²)0.750–0.999 in (19.05–25.37 mm), area 0–25 in2 (0–16130 mm²)1.000–1.249 in (25.4–31.72 mm), area 0–25 in2 (0–16130 mm²)1.250–1.499 in (31.75–38.07 mm), area 0–25 in2 (0–16130 mm²)1.500–1.749 in (38.1–44.42 mm), area 0–25 in2 (0–16130 mm²)1.750–1.999 in (44.45–50.77 mm), area 0–25 in2 (0–16130 mm²)2.000–2.249 in (50.8–57.12 mm), area 0–25 in2 (0–16130 mm²)2.250–2.499 in (57.15–63.47 mm), area 0–25 in2 (0–16130 mm²)
SpecificationAMS-QQ-A-200/3AMS-QQ-A-200/3AMS-QQ-A-200/3AMS-QQ-A-200/3AMS-QQ-A-200/3AMS-QQ-A-200/3AMS-QQ-A-200/3AMS-QQ-A-200/3AMS-QQ-A-200/3AMS-QQ-A-200/3
BasisSSSSSSSSSS
Ftu, MPaL393393393393393393393393393393
LT379.2372.3358.5351.6337.8324.1310.3296.5282.7268.9
Fty, MPaL262262262262262262262262262262
LT248.2241.3234.4227.5220.6213.7206.8199.9193.1186.2
Fcy, MPaL262262262262262262262262262262
LT268.9262255.1248.2241.3234.4227.5213.7206.8199.9
Fsu, MPaL199.9199.9199.9199.9199.9199.9193.1186.2179.3165.5
LT199.9199.9199.9199.9199.9199.9193.1186.2179.3165.5
Fbru (e/D = 1.5), MPaL558.5551.6544.7530.9517.1510.2489.5475.7461.9441.3
LT558.5551.6544.7530.9517.1510.2489.5475.7461.9441.3
Fbru (e/D = 2.0), MPaL682.6675.7668.8655641.2627.4613.6592.9572.3558.5
LT682.6675.7668.8655641.2627.4613.6592.9572.3558.5
Fbry (e/D = 1.5), MPaL386.1379.2365.4351.6337.8324.1303.4282.7268.9248.2
LT386.1379.2365.4351.6337.8324.1303.4282.7268.9248.2
Fbry (e/D = 2.0), MPaL475.7461.9448.2434.4420.6406.8386.1365.4344.7324.1
LT475.7461.9448.2434.4420.6406.8386.1365.4344.7324.1
e, %L12121210101010101010
LT…………………………
E, GPa74.4674.4674.4674.4674.4674.4674.4674.4674.4674.46
Ec, GPa75.8475.8475.8475.8475.8475.8475.8475.8475.8475.84
G, GPa28.2728.2728.2728.2728.2728.2728.2728.2728.2728.27
ν0.330.330.330.330.330.330.330.330.330.33
ρ, kg/m³2768276827682768276827682768276827682768

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_ty
3899.4100
9395.898
14988.995
20471.484
2637.947.6
31620.322.8
37111.812.9

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.