Ti-6Al-4V made by laser powder bed fusion and vacuum annealed at 800 °C is the common alpha-beta titanium alloy in a stress-relieved condition. As printed, it has a fine martensitic microstructure, high residual stress, some anisotropy between build directions and a rough surface. Vacuum annealing relaxes much of the stress and transforms the martensite toward an alpha-beta structure, improving ductility without the oxygen pickup of heat treatment in air. Internal porosity is not closed, and surfaces usually still need machining. Parts are used for aerospace brackets, medical implants and lightweight structural components.
Compliance & Regulations
1 interactive curve for this material
Stress-strain, S-N fatigue and environmental knockdown curves are free with an account.
Create free account| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Elongation at Break(εf) | 15.63 range 11.50–17.80 | % | 20°C · ε̇=0.001/s · n = 3 · 800 °C, 2 h, vacuum furnace (75 mTorr argon), ~12 °C/min cooling · Z (built vertically) | ||
S–N Curve (Wöhler)(S–N) | Curve (16 pts) | ksi | 20°C · R = −1 · 100 Hz · rotating bending · machined and polished, as-built surface and contour removed surface · 800 °C, 2 h, vacuum furnace (75 mTorr argon), ~12 °C/min cooling · Z (built vertically) | ||
Ultimate Tensile Strength(σUTS) | 157 range 156.4–158.2 | ksi | 20°C · ε̇=0.001/s · n = 3 · 800 °C, 2 h, vacuum furnace (75 mTorr argon), ~12 °C/min cooling · Z (built vertically) | ||
Yield Strength (0.2% offset)(σy) | 145 range 141.9–146.9 | ksi | 20°C · ε̇=0.001/s · n = 3 · 800 °C, 2 h, vacuum furnace (75 mTorr argon), ~12 °C/min cooling · Z (built vertically) | ||
Young's Modulus(E) | 21,772.8 range 21,562.9–21,941.9 | ksi | 20°C · ε̇=0.001/s · n = 3 · 800 °C, 2 h, vacuum furnace (75 mTorr argon), ~12 °C/min cooling · Z (built vertically) |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.1600 | lb/in³ | 22°C |
Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data