Tools › Materials › Aluminum › 2024-T42 Extruded bar, rod, and shapes

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

show SI units (MPa, GPa, kg/m³) open the MIL-HDBK-5J tool compare against temperature find alternatives

Material class	Aluminum
Alloy / temper / form	2024 / T42 / Extruded bar, rod, and shapes
Specifications	AMS-QQ-A-200/3
Handbook	MIL-HDBK-5J, 31 January 2003, section 3.2.3.0, Table 3.2.3.0(j) (pdf page 86 of the chapter file)
Dimension bands	10
Density	0.1 lb/in3

Design Mechanical and Physical Properties (room temperature)

As printed in the handbook table. 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 band		0.000–0.249 in, area 0–25 in2	0.250–0.499 in, area 0–25 in2	0.500–0.749 in, area 0–25 in2	0.750–0.999 in, area 0–25 in2	1.000–1.249 in, area 0–25 in2	1.250–1.499 in, area 0–25 in2	1.500–1.749 in, area 0–25 in2	1.750–1.999 in, area 0–25 in2	2.000–2.249 in, area 0–25 in2	2.250–2.499 in, area 0–25 in2
Specification		AMS-QQ-A-200/3	AMS-QQ-A-200/3	AMS-QQ-A-200/3	AMS-QQ-A-200/3	AMS-QQ-A-200/3	AMS-QQ-A-200/3	AMS-QQ-A-200/3	AMS-QQ-A-200/3	AMS-QQ-A-200/3	AMS-QQ-A-200/3
Basis		S	S	S	S	S	S	S	S	S	S
F_tu, ksi	L	57	57	57	57	57	57	57	57	57	57
F_tu, ksi	LT	55	54	52	51	49	47	45	43	41	39
F_ty, ksi	L	38	38	38	38	38	38	38	38	38	38
F_ty, ksi	LT	36	35	34	33	32	31	30	29	28	27
F_cy, ksi	L	38	38	38	38	38	38	38	38	38	38
F_cy, ksi	LT	39	38	37	36	35	34	33	31	30	29
F_su, ksi	L	29	29	29	29	29	29	28	27	26	24
F_su, ksi	LT	29	29	29	29	29	29	28	27	26	24
F_bru (e/D = 1.5), ksi	L	81	80	79	77	75	74	71	69	67	64
F_bru (e/D = 1.5), ksi	LT	81	80	79	77	75	74	71	69	67	64
F_bru (e/D = 2.0), ksi	L	99	98	97	95	93	91	89	86	83	81
F_bru (e/D = 2.0), ksi	LT	99	98	97	95	93	91	89	86	83	81
F_bry (e/D = 1.5), ksi	L	56	55	53	51	49	47	44	41	39	36
F_bry (e/D = 1.5), ksi	LT	56	55	53	51	49	47	44	41	39	36
F_bry (e/D = 2.0), ksi	L	69	67	65	63	61	59	56	53	50	47
F_bry (e/D = 2.0), ksi	LT	69	67	65	63	61	59	56	53	50	47
e, %	L	12	12	12	10	10	10	10	10	10	10
e, %	LT	…	…	…	…	…	…	…	…	…	…
E, Msi		10.8	10.8	10.8	10.8	10.8	10.8	10.8	10.8	10.8	10.8
E_c, Msi		11	11	11	11	11	11	11	11	11	11
G, Msi		4.1	4.1	4.1	4.1	4.1	4.1	4.1	4.1	4.1	4.1
ν		0.33	0.33	0.33	0.33	0.33	0.33	0.33	0.33	0.33	0.33
ρ, lb/in3		0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1

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

°F	F_tu	F_ty
100	99.4	100
200	95.8	98
300	88.9	95
400	71.4	84
500	37.9	47.6
600	20.3	22.8
700	11.8	12.9

Factors in percent of the room-temperature allowable.

Other 2024 Tables

2024-T3 Clad flat sheet and plate (Table 3.2.3.0(e))
2024-T3 Drawn tubing (Table 3.2.3.0(g))
2024-T3 Sheet (Table 3.2.3.0(b))
2024-T3, T3510, and T3511 Extruded bar, rod, and shapes (Table 3.2.3.0(j))
2024-T351 Bar and rod; rolled, drawn, or cold-finished (Table 3.2.3.0(i))
2024-T351 Clad flat sheet and plate (Table 3.2.3.0(e))
2024-T351 Plate (Table 3.2.3.0(b))
2024-T361 Bar and rod; rolled, drawn, or cold-finished (Table 3.2.3.0(i))
2024-T361 Clad flat sheet and plate (Table 3.2.3.0(e))
2024-T361 Plate (Table 3.2.3.0(b))
2024-T361 Sheet (Table 3.2.3.0(b))
2024-T4 Bar and rod; rolled, drawn, or cold-finished (Table 3.2.3.0(i))
2024-T4 Clad coiled sheet (Table 3.2.3.0(e))
2024-T4 Coiled Sheet (Table 3.2.3.0(b))
2024-T42 Bar and rod; rolled, drawn, or cold-finished (Table 3.2.3.0(i))
2024-T42 Clad flat sheet and plate (Table 3.2.3.0(e))
2024-T42 Drawn tubing (Table 3.2.3.0(g))
2024-T42 Flat Sheet and Plate (Table 3.2.3.0(b))
2024-T6 Bar and rod; rolled, drawn, or cold finished (Table 3.2.3.0(i))
2024-T62 Bar and rod; rolled, drawn, or cold finished (Table 3.2.3.0(i))
2024-T62 Clad flat sheet and plate (Table 3.2.3.0(e))
2024-T62 Flat Sheet and Plate (Table 3.2.3.0(b))
2024-T72 Clad flat sheet and plate (Table 3.2.3.0(e))
2024-T72 Flat Sheet and Plate (Table 3.2.3.0(b))
2024-T81 Clad flat sheet and plate (Table 3.2.3.0(e))
2024-T81 Drawn tubing (Table 3.2.3.0(g))
2024-T81 Sheet (Table 3.2.3.0(b))
2024-T81, T8510, and T8511 Extruded bar, rod, and shapes (Table 3.2.3.0(j))
2024-T851 Bar and rod; rolled, drawn, or cold finished (Table 3.2.3.0(i))
2024-T851 Clad flat sheet and plate (Table 3.2.3.0(e))
2024-T851 Plate (Table 3.2.3.0(b))
2024-T861 Clad flat sheet and plate (Table 3.2.3.0(e))
2024-T861 Plate (Table 3.2.3.0(b))
2024-T861 Sheet (Table 3.2.3.0(b))

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.