Ti-5Al-2.5Sn-Annealed Extruded bars and shapes: MIL-HDBK-5J Design Allowables
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| Material class | Titanium |
| Alloy / temper / form | Ti-5Al-2.5Sn / Annealed / Extruded bars and shapes |
| Specifications | AMS-T-81556, Comp. A-1 |
| Handbook | MIL-HDBK-5J, 31 January 2003, section 5.3.1.0, Table 5.3.1.0(d) (pdf page 19 of the chapter file) |
| Dimension bands | 4 |
| Density | 0.162 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 | 0.188–1.000 in | 1.001–2.000 in | 2.001–3.000 in | 3.001–4.000 in | |
|---|---|---|---|---|---|
| Specification | AMS-T-81556, Comp. A-1 | AMS-T-81556, Comp. A-1 | AMS-T-81556, Comp. A-1 | AMS-T-81556, Comp. A-1 | |
| Basis | S | S | S | S | |
| Ftu, ksi | L | 120 | 115 | 115 | 115 |
| Fty, ksi | L | 115 | 110 | 110 | 110 |
| e, % | L | 10 | 10 | 8 | 6 |
| E, Msi | 15.5 | 15.5 | 15.5 | 15.5 | |
| Ec, Msi | 15.5 | 15.5 | 15.5 | 15.5 | |
| ρ, lb/in3 | 0.162 | 0.162 | 0.162 | 0.162 | |
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
| °F | F_tu | F_ty | F_cy | F_su | F_bru | F_bry |
|---|---|---|---|---|---|---|
| -300 | 154.6 | 153.6 | ||||
| -200 | 131 | 131 | ||||
| -100 | 117.4 | 117.4 | ||||
| 0 | 106.9 | 106.9 | ||||
| 100 | 97.4 | 97.4 | 97.1 | 97.1 | 96.2 | 96.2 |
| 200 | 88 | 88 | 84.3 | 90.6 | 83.9 | 83.9 |
| 300 | 79.4 | 79.4 | 74.2 | 83.7 | 77.4 | 73.3 |
| 400 | 72.5 | 70.4 | 67.2 | 76.5 | 71.7 | 66.1 |
| 500 | 67 | 63.3 | 61.4 | 70.5 | 67.2 | 60.3 |
| 600 | 62.2 | 57.3 | 56.6 | 66.4 | 63.2 | 56.7 |
| 700 | 59.4 | 52.1 | 52.9 | 62.9 | 60 | 53.4 |
| 800 | 57.3 | 48.1 | 49.9 | 60.3 | 57.2 | 51.1 |
Factors in percent of the room-temperature allowable.
Other Ti-5Al-2.5Sn Tables
- Ti-5Al-2.5Sn-Annealed Bar (Table 5.3.1.0(c))
- Ti-5Al-2.5Sn-Annealed Forging (Table 5.3.1.0(c))
- Ti-5Al-2.5Sn-Annealed Plate (Table 5.3.1.0(b))
- Ti-5Al-2.5Sn-Annealed Sheet (Table 5.3.1.0(b))
- Ti-5Al-2.5Sn-Annealed Strip (Table 5.3.1.0(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.