The table below details the diameter tolerances of titanium bars of different lengths.These tolerances conform to internationally recognized engineering standards.Different manufacturing methods determine the diameter range for each method.All titanium bar sizes and tolerances are agreed upon before ordering.

Specified Size, in. (mm)Size Variations, in. (mm)Out-of-Round / Out-of-Square in. (mm)
1⁄4to 5⁄16 (6.35 to 7.94), incl+/-0.005 (0.13)0.008 (0.20)
Over 5⁄16 to 7⁄16 (7.94 to 11.11), incl+/-0.006 (0.15)0.009 (0.23)
Over 7⁄16 to 5⁄8 (11.11 to 15.88), incl+/-0.007 (0.18)0.010 (0.25)
Over 5⁄8 to 7⁄8 (15.88 to 22.22), incl+/-0.008 (0.20)0.012 (0.30)
Over 7⁄8 to 1 (22.22 to 25.40), incl+/-0.009 (0.23)0.013 (0.33)
Over 1 to 11⁄8 (25.40 to 28.58), incl+/-0.010 (0.25)0.015 (0.38)
Over 11⁄8 to 11⁄4 (28.58 to 31.75), incl+/-0.011 (0.28)0.016 (0.41)
Over 11⁄4 to 13⁄8 (31.75 to 34.92), incl+/-0.012 (0.30)0.018 (0.46)
Over 13⁄8 to 11⁄2 (34.92 to 38.10), incl+/-0.014 (0.36)0.021 (0.53)
Over 11⁄2 to 2 (38.10 to 50.80), incl+/- 1⁄64 (0.40)0.023 (0.58)
Over 2 to 21⁄2 (50.80 to 63.50), incl+ 1⁄32, − 0 (0.79)0.023 (0.58)
Over 21⁄2 to 31⁄2 (63.50 to 88.90), incl+ 3⁄64, − 0 (1.19)0.035 (0.89)
Over 31⁄2 to 41⁄2 (88.90 to 114.30), incl+ 1⁄16, − 0 (1.59)0.046 (1.17)
  • Out-of-round is the difference between the maximum and minimum diameters of the bar, measured at the same cross section.
  • Out-of-square section is the difference in the two dimensions at the same cross section of a square bar, each dimension being the distance between opposite faces.