Metal
AISI 4340 quenched-and-tempered bar, 260 ksi class, <=43 mm (MIL-HDBK-5H)
Historical public-release S-basis AISI 4340 bar reference at the 260 ksi ultimate-strength class.
Properties
Physical
| Property | Value | Unit |
|---|---|---|
| Density | 7833 | kg/m^3 |
Mechanical
| Property | Value | Unit |
|---|---|---|
| Ultimate tensile strength, L | 1792.637 | MPa |
| Tensile yield strength, L | 1496.162 | MPa |
| Compressive yield strength, L | 1620.268 | MPa |
| Ultimate shear strength | 1075.582 | MPa |
| Elongation, L | 10 | % |
| Young's modulus | 199.948 | GPa |
| Compression modulus | 199.948 | GPa |
| Shear modulus | 75.842 | GPa |
| Poisson's ratio | 0.32 | - |
Units
Condition
- Condition
- AISI 4340; quenched and tempered to 260 ksi Ftu class; bar; <=43.18 mm equivalent-round diameter
- Temper
- 260 ksi ultimate-strength class
- Heat treatment
- quenched and tempered; the required 260 ksi ultimate strength must be substantiated by adequate quality-control testing
- Product form
- bar
- Thickness / diameter range
- <=1.7 in (43.18 mm) equivalent-round diameter; Table 2.3.0.2 permits larger diameters only for specified faster quench routes
- Test direction
- longitudinal
- Processing route
- AMS 6414 bar; quenched and tempered
- Temperature range
- 21 ... 21 degC
- Notes
- Room-temperature historical handbook values. Applicability is limited to the exact alloy, temper/condition, product form, size band, material axis, statistical basis, and specification identified by the cited table. Historical reference only; confirm the current procurement specification and material test report.
Standards
No material standards linked.
Record status
- Category
- Metal
- Unit system
- Common SI