Elastic constants of single crystalline β-Ti70Nb30

β-Ti 70 Nb 30 (at.%) singles crystals were grown by a magnetic field controlled floating-zone technique with two-phase radiofrequency electromagnetic heating. The Young’s moduli of the crystals show pronounced anisotropy. The lowest value is E 100  = 39.5 GPa. Comparison of the present results with recently published data and extrapolation to low Nb content of about 20 at.% shows that the preparation of β-Ti 1− x Nb x -based alloys with E 100 ≈20–30 GPa should be possible, which would match the modulus of bone.