AZ31B-O Plate: MIL-HDBK-5J Design Allowables
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| Material class | Magnesium Alloy |
| Alloy / temper / form | AZ31B / O / Plate |
| Specifications | AMS 4375 |
| Handbook | MIL-HDBK-5J, 31 January 2003, section 4.2.1.0, Table 4.2.1.0(b) (pdf page 7 of the chapter file) |
| Dimension bands | 3 |
| Density | 0.0639 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 | 0.250–0.500 in | 0.501–2.000 in | 2.001–3.000 in | |
|---|---|---|---|---|
| Specification | AMS 4375 | AMS 4375 | AMS 4375 | |
| Basis | S | S | S | |
| Ftu, ksi | L | 32 | 32 | 32 |
| Fty, ksi | L | 15 | 15 | 15 |
| Fcy, ksi | L | 10 | 10 | 8 |
| Fsu, ksi | L | 17 | … | … |
| Fbru (e/D = 1.5), ksi | L | 50 | … | … |
| Fbru (e/D = 2.0), ksi | L | 60 | … | … |
| Fbry (e/D = 1.5), ksi | L | 27 | … | … |
| Fbry (e/D = 2.0), ksi | L | 27 | … | … |
| e, % | L | 12 | 10 | 9 |
| E, Msi | 6.5 | 6.5 | 6.5 | |
| Ec, Msi | 6.5 | 6.5 | 6.5 | |
| G, Msi | 2.4 | 2.4 | 2.4 | |
| ν | 0.35 | 0.35 | 0.35 | |
| ρ, lb/in3 | 0.0639 | 0.0639 | 0.0639 | |
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.
Moduli at temperature
Other AZ31B Tables
- AZ31B-F Extruded / hollow shapes (Table 4.2.1.0(d))
- AZ31B-F Extruded bar, rod, and / solid shapes (Table 4.2.1.0(d))
- AZ31B-F Extruded tube (Table 4.2.1.0(d))
- AZ31B-F Forging (Table 4.2.1.0(d))
- AZ31B-H24 Plate (Table 4.2.1.0(b))
- AZ31B-H24 Sheet (Table 4.2.1.0(b))
- AZ31B-H26 Plate (Table 4.2.1.0(c))
- AZ31B-O Sheet (Table 4.2.1.0(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from the chapter tables; check the printed table before use in a certified analysis, and note that MIL-HDBK-5J was superseded by MMPDS, whose later editions may differ.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.