Ti-6Al-7Nb (UNS designation R56700) is an alpha-beta titanium alloy first synthesized in 1977 containing 6% aluminum and 7% niobium.
It features high strength and has similar properties as the cytotoxic vanadium containing alloy Ti-6Al-4V.
[2][3][4] Physical properties of the alloy are mostly dependent on the morphology and the fractions volume of the phases presence from the parameters obtained from the manufacturing process.
In the recent years Ti-6Al-7Nb alloys could also be made by different 3D-printer technique such as SLM and EBM.
Moreover, heat treatment provides an ideal combination of ductility, machinability and structural stability due to the differences in microstructure and cooling rates between α and β phases.