Yeah so for 6Al-4V Titanium you’re going to want to check out the specifications that are called out on the drawing

For Plate / Sheet you’d want:

AMS 4911

MIL-T-9046

For Round Bar / Flat Bar you’d want: 

AMS 4928

AMS 4963

AMS 4965

AMS 4967

MIL-T-9047