2024-T861 Plate: MIL-HDBK-5J Design Allowables
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| Material class | Aluminum |
| Alloy / temper / form | 2024 / T861 / Plate |
| Specifications | AMS-QQ-A-250/4 |
| Handbook | MIL-HDBK-5J, 31 January 2003, section 3.2.3.0, Table 3.2.3.0(b) (pdf page 73 of the chapter file) |
| Dimension bands | 1 |
| 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 | 0.250–0.500 in | |
|---|---|---|
| Specification | AMS-QQ-A-250/4 | |
| Basis | S | |
| Ftu, ksi | L | 70 |
| LT | 70 | |
| Fty, ksi | L | 64 |
| LT | 64 | |
| Fcy, ksi | L | 64 |
| LT | 67 | |
| Fsu, ksi | L | 40 |
| LT | 40 | |
| Fbru (e/D = 1.5), ksi | L | 108 |
| LT | 108 | |
| Fbru (e/D = 2.0), ksi | L | 140 |
| LT | 140 | |
| Fbry (e/D = 1.5), ksi | L | 93 |
| LT | 93 | |
| Fbry (e/D = 2.0), ksi | L | 109 |
| LT | 109 | |
| e, % | L | … |
| LT | 4 | |
| E, Msi | 10.7 | |
| Ec, Msi | 10.9 | |
| G, Msi | 4 | |
| ν | 0.33 | |
| ρ, lb/in3 | 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 | F_cy | F_su | F_bru | F_bry |
|---|---|---|---|---|---|---|
| 100 | 97.9 | 97.5 | 97.4 | 98.5 | 98.4 | 99.6 |
| 200 | 89.3 | 90.1 | 88.7 | 90 | 92.5 | 97.2 |
| 300 | 81.6 | 82.8 | 82.4 | 80.4 | 84.3 | 92.1 |
| 400 | 71.1 | 69.7 | 72.5 | 68.3 | 71.9 | 79.1 |
| 500 | 50.9 | 49.2 | 47.5 | 50.6 | 54.5 | 56.6 |
| 600 | 28.8 | 25.3 | 21.6 | 24.8 | 29.9 | 32.9 |
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 Extruded bar, rod, and shapes (Table 3.2.3.0(j))
- 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 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.