PH13-8Mo-H1000 Round, hex, square and flat 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 | PH13-8Mo / H1000 / Round, hex, square and flat bar |
| Specifications | AMS 5629 |
| Handbook | MIL-HDBK-5J, 31 January 2003, section 2.6.6.0, Table 2.6.6.0(b) (pdf page 158 of the chapter file) |
| Dimension bands | 1 |
| Density | 7723 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 | 0–8 in (0–203.2 mm) | ||
|---|---|---|---|
| Specification | AMS 5629 | ||
| Basis | A | B | |
| Ftu, MPa | L | 1386 | 1434 |
| LT | 1386 | 1434 | |
| Fty, MPa | L | 1310 | 1379 |
| LT | 1310 | 1379 | |
| Fcy, MPa | L | 1379 | 1455 |
| LT | 1379 | 1455 | |
| Fsu, MPa | L | 806.7 | 841.2 |
| LT | 806.7 | 841.2 | |
| Fbru (e/D = 1.5), MPa | L | 2082 | 2158 |
| LT | 2082 | 2158 | |
| Fbru (e/D = 2.0), MPa | L | 2772 | 2868 |
| LT | 2772 | 2868 | |
| Fbry (e/D = 1.5), MPa | L | 1813 | 1910 |
| LT | 1813 | 1910 | |
| Fbry (e/D = 2.0), MPa | L | 2330 | 2455 |
| LT | 2330 | 2455 | |
| e, % | L | 10 | 10 |
| LT | 10 | 10 | |
| E, GPa | 195.1 | 195.1 | |
| Ec, GPa | 202.7 | 202.7 | |
| G, GPa | 75.84 | 75.84 | |
| ν | 0.28 | 0.28 | |
| ρ, kg/m³ | 7723 | 7723 | |
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 |
|---|---|---|
| -73 | 107.2 | 107.2 |
| -18 | 103 | 103 |
| 38 | 98.8 | 98.8 |
| 93 | 95 | 95 |
| 149 | 91.6 | 91.6 |
| 204 | 88.4 | 88.4 |
| 26 | 85.4 | 84.4 |
| 316 | 82.4 | 79.9 |
| 371 | 79 | 74 |
| 427 | 73 | 66.7 |
Factors in percent of the room-temperature allowable.
Other PH13-8Mo Tables
- PH13-8Mo-H1000 Forging, flash welded ring, and extrusion (Table 2.6.6.0(c))
- PH13-8Mo-H1025 Forging, flash welded ring, and extrusion (Table 2.6.6.0(c))
- PH13-8Mo-H1025 Round, hex, square and flat bar (Table 2.6.6.0(b))
- PH13-8Mo-H1050 Forging, flash welded ring, and extrusion (Table 2.6.6.0(c))
- PH13-8Mo-H1050 Round, hex, square and flat bar (Table 2.6.6.0(b))
- PH13-8Mo-H1100 Forging, flash welded ring, and extrusion (Table 2.6.6.0(c))
- PH13-8Mo-H1100 Round, hex, square and flat bar (Table 2.6.6.0(b))
- PH13-8Mo-H1150 Forging, flash welded ring, and extrusion (Table 2.6.6.0(c))
- PH13-8Mo-H1150 Round, hex, square and flat bar (Table 2.6.6.0(b))
- PH13-8Mo-H950 Forging, flash welded ring, and extrusion (Table 2.6.6.0(c))
- PH13-8Mo-H950 Round, hex, square and flat bar (Table 2.6.6.0(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.