Custom 450-H1050 Bar: MIL-HDBK-5J Design Allowables
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| Material class | Steel |
| Alloy / temper / form | Custom 450 / H1050 / Bar |
| Specifications | AMS 5773 |
| Handbook | MIL-HDBK-5J, 31 January 2003, section 2.6.3.0, Table 2.6.3.0(c) (pdf page 130 of the chapter file) |
| Dimension bands | 1 |
| Density | 0.28 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 | 0–12 in | |
|---|---|---|
| Specification | AMS 5773 | |
| Basis | S | |
| Ftu, ksi | L | 145 |
| LT | 145 | |
| Fty, ksi | L | 135 |
| LT | 135 | |
| Fcy, ksi | L | 143 |
| LT | 141 | |
| Fsu, ksi | L | 93 |
| LT | 93 | |
| Fbru (e/D = 1.5), ksi | L | 239 |
| LT | 239 | |
| Fbru (e/D = 2.0), ksi | L | 307 |
| LT | 307 | |
| Fbry (e/D = 1.5), ksi | L | 204 |
| LT | 204 | |
| Fbry (e/D = 2.0), ksi | L | 257 |
| LT | 257 | |
| e, % | L | 12 |
| LT | 9 | |
| E, Msi | 29 | |
| Ec, Msi | 31 | |
| G, Msi | 11.2 | |
| ν | 0.29 | |
| ρ, lb/in3 | 0.28 | |
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
Elongation and exposure effects
| °F | F_tu | F_ty | F_su |
|---|---|---|---|
| 0 | 104.1 | 104.6 | 104.3 |
| 100 | 98.3 | 98.5 | 98.4 |
| 200 | 93 | 92.2 | 94.2 |
| 300 | 89.5 | 86.7 | 90.3 |
| 400 | 86.3 | 82.5 | 86.6 |
| 500 | 83.6 | 79.1 | 82.7 |
| 600 | 80.3 | 76.2 | 78.9 |
| 700 | 76.3 | 72.3 | 75 |
| 800 | 70.5 | 66.3 |
Factors in percent of the room-temperature allowable.
Other Custom 450 Tables
- Custom 450-H1000 Bar (Table 2.6.3.0(c))
- Custom 450-H1050 Bar (Table 2.6.3.0(b))
- Custom 450-H1100 Bar (Table 2.6.3.0(c))
- Custom 450-H1150 Bar (Table 2.6.3.0(c))
- Custom 450-H900 Bar (Table 2.6.3.0(b))
- Custom 450-H900 Bar (Table 2.6.3.0(c))
- Custom 450-H950 Bar (Table 2.6.3.0(c))
- Custom 450-Solution Treated Bar (Table 2.6.3.0(b))
- Custom 450-Solution treated Bar (Table 2.6.3.0(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.