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2024-T4 Bar and rod; rolled, drawn, or cold-finished: MIL-HDBK-5J Design Allowables

Material classAluminum
Alloy / temper / form2024 / T4 / Bar and rod; rolled, drawn, or cold-finished
SpecificationsAMS 4120 and AMS-QQ-A-225/6
HandbookMIL-HDBK-5J, 31 January 2003, section 3.2.3.0, Table 3.2.3.0(i) (pdf page 83 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 band0.125–0.499 in (3.175–12.67 mm)0.500–1.000 in (12.7–25.4 mm)1.001–2.000 in (25.43–50.8 mm)2.001–3.000 in (50.83–76.2 mm)3.001–4.000 in (76.23–101.6 mm)4.001–4.500 in (101.6–114.3 mm)4.501–5.000 in (114.3–127 mm)5.001–6.000 in (127–152.4 mm)6.001–6.500 in (152.4–165.1 mm)6.501–8.000 in (165.1–203.2 mm)
SpecificationAMS 4120 and AMS-QQ-A-225/6AMS 4120 and AMS-QQ-A-225/6AMS 4120 and AMS-QQ-A-225/6AMS 4120 and AMS-QQ-A-225/6AMS 4120 and AMS-QQ-A-225/6AMS 4120 and AMS-QQ-A-225/6AMS 4120 and AMS-QQ-A-225/6AMS 4120 and AMS-QQ-A-225/6AMS 4120 and AMS-QQ-A-225/6AMS 4120 and AMS-QQ-A-225/6
BasisSSSSSSSSSS
Ftu, MPaL427.5427.5427.5427.5427.5427.5427.5427.5427.5399.9
LT420.6420.6406.8393379.2372.3372.3358.5……
Fty, MPaL310.3289.6289.6289.6289.6289.6275.8275.8275.8262
LT310.3289.6282.7275.8268.9268.9255.1248.2……
Fcy, MPaL248.2227.5227.5227.5227.5227.5220.6220.6……
LT…………………………
Fsu, MPaL255.1255.1255.1255.1255.1255.1255.1255.1255.1…
LT255.1255.1255.1255.1255.1255.1255.1255.1……
Fbru (e/D = 1.5), MPaL641.2641.2641.2641.2641.2641.2641.2641.2……
LT641.2641.2641.2641.2641.2641.2641.2641.2……
Fbru (e/D = 2.0), MPaL813.6813.6813.6813.6813.6813.6813.6813.6……
LT813.6813.6813.6813.6813.6813.6813.6813.6……
Fbry (e/D = 1.5), MPaL434.4406.8406.8406.8406.8406.8386.1386.1……
LT434.4406.8406.8406.8406.8406.8386.1386.1……
Fbry (e/D = 2.0), MPaL496.4461.9461.9461.9461.9461.9441.3441.3……
LT496.4461.9461.9461.9461.9461.9441.3441.3……
e, %L10101010101010101010
LT…………………………
E, GPa72.3972.3972.3972.3972.3972.3972.3972.3972.3972.39
Ec, GPa73.7773.7773.7773.7773.7773.7773.7773.7773.7773.77
G, GPa27.5827.5827.5827.5827.5827.5827.5827.5827.5827.58
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
-184111.6118.5
-129105.3108.3
-73103103.6
-18101.6102
3898.998.9
9392.493.9
14983.987.4
20474.577.7
2643.851.6
31622.526.9
3711214
4278

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.