Custom 455-H950 Bar: 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 | Steel |
| Alloy / temper / form | Custom 455 / H950 / 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 | 2 |
| Density | 775 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 | 0–4 in (0–101.6 mm) | 4.001–6.000 in (101.6–152.4 mm) | |
|---|---|---|---|
| Specification | AMS 5617 | AMS 5617 | |
| Basis | S | S | |
| Ftu, MPa | L | 1551 | 1517 |
| LT | 1517 | 1517 | |
| ST | 1517 | 1517 | |
| Fty, MPa | L | 1448 | 1413 |
| LT | 1413 | 1413 | |
| ST | 1413 | 1413 | |
| Fcy, MPa | L | 1510 | 1475 |
| LT | 1510 | 1475 | |
| ST | 1510 | 1475 | |
| Fsu, MPa | L | 917 | 896.3 |
| LT | 917 | 896.3 | |
| ST | 917 | 896.3 | |
| Fbru (e/D = 1.5), MPa | L | 2448 | 2392 |
| LT | 2448 | 2392 | |
| ST | 2448 | 2392 | |
| Fbru (e/D = 2.0), MPa | L | 3103 | 3034 |
| LT | 3103 | 3034 | |
| ST | 3103 | 3034 | |
| Fbry (e/D = 1.5), MPa | L | 2144 | 2089 |
| LT | 2144 | 2089 | |
| ST | 2144 | 2089 | |
| Fbry (e/D = 2.0), MPa | L | 2523 | 2468 |
| LT | 2523 | 2468 | |
| ST | 2523 | 2468 | |
| e, % | L | 10 | 10 |
| LT | 5 | 5 | |
| ST | 5 | 5 | |
| E, GPa | 196.5 | 196.5 | |
| Ec, GPa | 206.8 | 206.8 | |
| G, GPa | 77.91 | 77.91 | |
| ν | 0.27 | 0.27 | |
| ρ, kg/m³ | 7750 | 7750 | |
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
| °C | F_tu | F_ty | F_su |
|---|---|---|---|
| -73 | 109.5 | 106.3 | |
| -18 | 103.4 | 103.4 | 102.2 |
| 38 | 99 | 99 | 97.7 |
| 93 | 94.3 | 94.3 | 92.5 |
| 149 | 89.8 | 89.8 | 87.3 |
| 204 | 86.7 | 84.5 | 83.4 |
| 26 | 83.3 | 80 | 79.8 |
| 316 | 80.2 | 75.9 | 76.2 |
| 371 | 76.5 | 72.1 | 72.2 |
Factors in percent of the room-temperature allowable.
Other Custom 455 Tables
- Custom 455-H1000 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.