PH13-8Mo-H950 Forging, flash welded ring, and extrusion: MIL-HDBK-5J Design Allowables
show SI units (MPa, GPa, kg/m³) open the MIL-HDBK-5J tool compare against temperature find alternatives
| Material class | Steel |
| Alloy / temper / form | PH13-8Mo / H950 / Forging, flash welded ring, and extrusion |
| Specifications | AMS 5629 |
| Handbook | MIL-HDBK-5J, 31 January 2003, section 2.6.6.0, Table 2.6.6.0(c) (pdf page 159 of the chapter file) |
| Dimension bands | 1 |
| Density | 0.279 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 5629 | |
| Basis | S | |
| Ftu, ksi | L | 220 |
| LT | 220 | |
| Fty, ksi | L | 205 |
| LT | 205 | |
| e, % | L | 10 |
| LT | 10 | |
| E, Msi | 28.3 | |
| Ec, Msi | 29.4 | |
| G, Msi | 11 | |
| ν | 0.28 | |
| ρ, lb/in3 | 0.279 | |
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 |
|---|---|---|
| -100 | 107.2 | 107.2 |
| 0 | 103 | 103 |
| 100 | 98.8 | 98.8 |
| 200 | 95 | 95 |
| 300 | 91.6 | 91.6 |
| 400 | 88.4 | 88.4 |
| 500 | 85.4 | 84.4 |
| 600 | 82.4 | 79.9 |
| 700 | 79 | 74 |
| 800 | 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-H1000 Round, hex, square and flat bar (Table 2.6.6.0(b))
- 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 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.