Custom 455-H1000 Bar: MIL-HDBK-5J Design Allowables
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| Material class | Steel |
| Alloy / temper / form | Custom 455 / H1000 / Bar |
| Specifications | AMS 5617 |
| Handbook | MIL-HDBK-5J, 31 January 2003, section 2.6.4.0, Table 2.6.4.0(b) (pdf page 141 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 | 0–8 in | |
|---|---|---|
| Specification | AMS 5617 | |
| Basis | S | |
| Ftu, ksi | L | 200 |
| LT | 220 | |
| ST | 220 | |
| Fty, ksi | L | 185 |
| LT | 205 | |
| ST | 205 | |
| Fcy, ksi | L | 193 |
| LT | 193 | |
| ST | 193 | |
| Fsu, ksi | L | 124 |
| LT | 124 | |
| ST | 124 | |
| Fbru (e/D = 1.5), ksi | L | 324 |
| LT | 324 | |
| ST | 324 | |
| Fbru (e/D = 2.0), ksi | L | 409 |
| LT | 409 | |
| ST | 409 | |
| Fbry (e/D = 1.5), ksi | L | 285 |
| LT | 285 | |
| ST | 285 | |
| Fbry (e/D = 2.0), ksi | L | 343 |
| LT | 343 | |
| ST | 343 | |
| e, % | L | 10 |
| LT | 5 | |
| ST | 5 | |
| E, Msi | 28.9 | |
| Ec, Msi | 30 | |
| G, Msi | 11.5 | |
| ν | 0.26 | |
| 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
| °F | F_tu | F_ty | F_su |
|---|---|---|---|
| -100 | 107.2 | 105.8 | 108.7 |
| 0 | 102.8 | 102.8 | 103.4 |
| 100 | 98.7 | 98.7 | 98.8 |
| 200 | 94.3 | 93.3 | 94.3 |
| 300 | 90.3 | 87.8 | 90.5 |
| 400 | 86.4 | 82.9 | 87.1 |
| 500 | 82.9 | 79.1 | 83.5 |
| 600 | 78.9 | 76 | 79.3 |
| 700 | 74.9 | 72.1 | 73.9 |
| 800 | 70 | 67.2 |
Factors in percent of the room-temperature allowable.
Other Custom 455 Tables
- Custom 455-H950 Bar (Table 2.6.4.0(b))
- Custom 455-H950 Tubing (Welded) (Table 2.6.4.0(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.