Custom 450-H900 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 450 / H900 / 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 | 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 | 0–12 in (0–304.8 mm) | |
|---|---|---|
| Specification | AMS 5773 | |
| Basis | S | |
| Ftu, MPa | L | 1241 |
| LT | 1241 | |
| Fty, MPa | L | 1172 |
| LT | 1172 | |
| Fcy, MPa | L | 1207 |
| LT | 1193 | |
| Fsu, MPa | L | 786 |
| LT | 786 | |
| Fbru (e/D = 1.5), MPa | L | 2055 |
| LT | 2055 | |
| Fbru (e/D = 2.0), MPa | L | 2627 |
| LT | 2627 | |
| Fbry (e/D = 1.5), MPa | L | 1827 |
| LT | 1827 | |
| Fbry (e/D = 2.0), MPa | L | 2248 |
| LT | 2248 | |
| e, % | L | 10 |
| LT | 6 | |
| E, GPa | 199.9 | |
| Ec, GPa | 213.7 | |
| G, GPa | 77.22 | |
| ν | 0.29 | |
| ρ, kg/m³ | 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
| °C | F_tu | F_ty | F_su |
|---|---|---|---|
| -73 | 110.1 | 109.6 | 113.6 |
| -18 | 104.1 | 104.5 | 105.6 |
| 38 | 98.6 | 98.3 | 98.9 |
| 93 | 93.3 | 91.7 | 92.7 |
| 149 | 88.4 | 85 | 87.4 |
| 204 | 84.1 | 78.6 | 83 |
| 26 | 81.6 | 73.6 | 80.2 |
| 316 | 80.1 | 70.3 | 78.1 |
| 371 | 77.1 | 67.5 | 74.2 |
| 427 | 73.4 | 64.5 | 69.4 |
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-H1050 Bar (Table 2.6.3.0(c))
- 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-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.