Ti-6Al-7Nb is a near-alpha titanium alloy that substitutes niobium for vanadium in the classic Ti-6Al-4V formulation, eliminating concerns about vanadium cytotoxicity in biomedical applications. It is widely used in orthopedic and dental implants, cardiovascular devices, and surgical instruments where biocompatibility, corrosion resistance, and load-bearing reliability are critical. Engineers select this alloy over Ti-6Al-4V specifically for long-term implantable devices where material-body interaction must be minimized, while maintaining comparable mechanical performance and superior fatigue resistance in cyclic loading environments.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Elongation at Break(εf) | 10.00 | - | — | ||
Fatigue Strength (10⁷ cycles)(σf) | 72.52 | ksi | notes | ||
Fracture Toughness(KIC) | 72.81 | ksi·√in | — | ||
Poisson's Ratio(ν) | 0.3300 | - | — | ||
Ultimate Tensile Strength(σUTS) | 137.8 | ksi | ASTM F1295 | ||
Yield Strength (0.2% offset)(σy) | 127.6 | ksi | ASTM F1295 | ||
Young's Modulus(E) | 15,229 | ksi | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Thermal Conductivity(k) | 4.045 | BTU/(hr·ft·°F) | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.1633 | lb/in³ | — |