Ti-6Al-6V-2Sn-Annealed Forging: MIL-HDBK-5J Design Allowables
show US units (ksi, Msi, lb/in³) open the MIL-HDBK-5J tool compare against temperature find alternatives
| Material class | Titanium |
| Alloy / temper / form | Ti-6Al-6V-2Sn / Annealed / Forging |
| Specifications | AMS 4978 |
| Handbook | MIL-HDBK-5J, 31 January 2003, section 5.4.2.0, Table 5.4.2.0(d) (pdf page 96 of the chapter file) |
| Dimension bands | 2 |
| Density | 454 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 band | 0–2 in (0–50.8 mm) | 2.001–4.000 in (50.83–101.6 mm) | |
|---|---|---|---|
| Specification | AMS 4978 | AMS 4978 | |
| Basis | S | S | |
| Ftu, MPa | L | 1034 | 999.7 |
| LT | 1034 | 999.7 | |
| ST | … | 999.7 | |
| Fty, MPa | L | 965.3 | 930.8 |
| LT | 965.3 | 930.8 | |
| ST | … | 930.8 | |
| e, % | L | 10 | 10 |
| LT | 8 | 8 | |
| ST | … | 7 | |
| E, GPa | 110.3 | 110.3 | |
| Ec, GPa | 113.1 | 113.1 | |
| G, GPa | 42.75 | 42.75 | |
| ρ, kg/m³ | 4540 | 4540 | |
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
| °C | F_tu | F_ty | F_cy | F_su | F_bru | F_bry |
|---|---|---|---|---|---|---|
| 38 | 97.8 | 97.8 | 97.7 | 97.7 | 97.7 | 97.7 |
| 93 | 91.7 | 89.6 | 88.5 | 91.6 | 91.3 | 89.8 |
| 149 | 86.5 | 82.7 | 81.8 | 85.4 | 86 | 83.1 |
| 204 | 82.6 | 77.6 | 75.7 | 80.4 | 81.5 | 78 |
| 26 | 79.1 | 72.6 | 71.2 | 76.3 | 77.5 | 74.1 |
| 316 | 76.2 | 68.6 | 67.5 | 73.5 | 74.3 | 70.6 |
| 371 | 73.7 | 64.6 | 64.3 | 71.4 | 71.1 | 67.7 |
Factors in percent of the room-temperature allowable.
Other Ti-6Al-6V-2Sn Tables
- Ti-6Al-6V-2Sn-Air-cool annealed Bar (Table 5.4.2.0(c))
- Ti-6Al-6V-2Sn-Annealed Extruded bar and shapes (Table 5.4.2.0(e))
- Ti-6Al-6V-2Sn-Annealed Sheet, strip, and plate (Table 5.4.2.0(b))
- Ti-6Al-6V-2Sn-Solution treated and aged Bar and forging (Table 5.4.2.0(c))
- Ti-6Al-6V-2Sn-Solution treated and aged Extruded bar and shapes (Table 5.4.2.0(e))
- Ti-6Al-6V-2Sn-Solution treated and aged Sheet, strip, and plate (Table 5.4.2.0(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.