7175-T74a,b Die forging: 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 | 7175 / T74a,b / Die forging |
| Specifications | AMS 4149 |
| Handbook | MIL-HDBK-5J, 31 January 2003, section 3.7.8.0, Table 3.7.8.0(b) (pdf page 440 of the chapter file) |
| Dimension bands | 6 |
| Density | 0.101 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 | 0–1 in | 1.001–2.000 in | 2.001–3.000 in | 3.001–4.000 in | 4.001–5.000 in | 5.001–6.000 in | ||
|---|---|---|---|---|---|---|---|---|
| Specification | AMS 4149 | AMS 4149 | AMS 4149 | AMS 4149 | AMS 4149 | AMS 4149 | ||
| Basis | S | A | B | S | S | S | S | |
| Ftu, ksi | L | 76 | 74 | 77 | 76 | 73 | 70 | 68 |
| LT | 71 | 71 | … | 71 | 70 | 68 | 65 | |
| ST | … | … | … | … | … | … | … | |
| Fty, ksi | L | 66 | 64 | 67 | 66 | 63 | 61 | 58 |
| LT | 62 | 62 | … | 62 | 60 | 58 | 55 | |
| ST | … | … | … | … | … | … | … | |
| Fcy, ksi | L | 67 | 65 | 68 | 67 | … | … | … |
| LT | … | … | … | … | … | … | … | |
| ST | 63 | 61 | 64 | 63 | … | … | … | |
| Fsu, ksi | L | 43 | 42 | 44 | 43 | … | … | … |
| LT | 43 | 42 | … | 43 | … | … | … | |
| ST | 43 | 42 | 44 | 43 | … | … | … | |
| Fbru (e/D = 1.5), ksi | L | 106 | 105 | 109 | 106 | … | … | … |
| LT | 106 | 105 | … | 106 | … | … | … | |
| ST | 106 | 105 | 109 | 106 | … | … | … | |
| Fbru (e/D = 2.0), ksi | L | 140 | 137 | 142 | 140 | … | … | … |
| LT | 140 | 137 | … | 140 | … | … | … | |
| ST | 140 | 137 | 142 | 140 | … | … | … | |
| Fbry (e/D = 1.5), ksi | L | 86 | 84 | 88 | 86 | … | … | … |
| LT | 86 | 84 | … | 86 | … | … | … | |
| ST | 86 | 84 | 88 | 86 | … | … | … | |
| Fbry (e/D = 2.0), ksi | L | 102 | 99 | 103 | 102 | … | … | … |
| LT | 102 | 99 | … | 102 | … | … | … | |
| ST | 102 | 99 | 103 | 102 | … | … | … | |
| e, % | L | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| LT | 4 | 4 | … | 4 | 4 | 4 | 4 | |
| ST | … | … | … | … | … | … | … | |
| E, Msi | 10.2 | 10.2 | 10.2 | 10.2 | 10.2 | 10.2 | 10.2 | |
| Ec, Msi | 10.7 | 10.7 | 10.7 | 10.7 | 10.7 | 10.7 | 10.7 | |
| G, Msi | 3.9 | 3.9 | 3.9 | 3.9 | 3.9 | 3.9 | 3.9 | |
| ν | 0.33 | 0.33 | 0.33 | 0.33 | 0.33 | 0.33 | 0.33 | |
| ρ, lb/in3 | 0.101 | 0.101 | 0.101 | 0.101 | 0.101 | 0.101 | 0.101 | |
Effect of Temperature
The handbook maps no temperature-effect figure to this table.
Other 7175 Tables
- 7175-T66 Die forging (Table 3.7.8.0(b))
- 7175-T73511 Extrusion (Table 3.7.8.0(d))
- 7175-T74 Hand forging (Table 3.7.8.0(c))
- 7175-T7452 Hand forging (Table 3.7.8.0(c))
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.