Testing mechanical properties of metals
| Property | What It Means |
|---|---|
| Yield Strength (MPa) | Stress at 0.2% permanent deformation |
| Ultimate Tensile (MPa) | Maximum stress before necking |
| Elongation (%) | Plastic strain at fracture (ductility) |
| Young Modulus (GPa) | Stiffness - 207 (steel), 70 (Al), 110 (Ti) |
Flat or round per ASTM E8/ISO 6892. Gauge length: 50mm standard. Rate: 1-10 mm/min until yield, then increase.