ASTM B708:
Dimensional Tolerances for Tantalum Sheet and Plate |
 |
ThicknessA Tolerance
+/-, in. (mm) |
Width Tolerance (Slit)B
+/-, in. (mm) |
Tolerance on Sheared Lengths
in. (mm) |
Thickness
of Ta
in. (mm) |
< 6 in.
(152.4 mm) |
6 to 24 in.
(152.4 to
606.6 mm) |
< 6 in.
(152.4 mm) |
6 to 24 in.
(152.4 to
606.6 mm) |
Length <12 in.
(304.8 mm) |
Length >12 in.
(304.8 mm) |
Plus |
Minus |
Plus |
Minus |
0.0051 to 0.010
(0.129 to 0.254) |
.0005
(0.0127) |
_ |
0.012
(0.305) |
_ |
1/16
(1.59) |
0 |
3/32 (2.381) |
0 |
0.011 to 0.015
(0.279 to 0.381) |
.0007
(0.0178) |
0.001
(0.0254) |
0.015
(0.381) |
0.015
(0.381) |
1/16
(1.59) |
0 |
3/32 (2.381) |
0 |
0.016 to 0.020
(0.406 to 0.508) |
.0008
(0.0203) |
0.0015 (0.0381) |
0.015
(0.381) |
0.015
(0.381) |
1/16
(1.59) |
0 |
3/32 (2.381) |
0 |
0.021 to 0.030
(0.533 to 0.762) |
.0015
(0.0381) |
0.0025 (0.0635) |
0.020
(0.508) |
0.025
(0.635) |
1/16
(1.59) |
0 |
3/32 (2.381) |
0 |
0.031 to 0.060
(0.787 to 1.524) |
0.0025 (0.0635) |
0.0035 (0.0889) |
0.025
(0.635) |
0.030
(0.762) |
1/16
(1.59) |
0 |
3/32 (2.381) |
0 |
0.061 to 0.090
(1.549 to 2.286) |
0.004
(0.1016) |
0.005
(0.1270) |
0.025
(0.635) |
0.035
(0.889) |
1/16
(1.59) |
0 |
3/32 (2.381) |
0 |
0.091 to 0.125
(2.311 to 3.175) |
0.006
(0.1524) |
0.007
(0.1778) |
_B |
_B |
1/16
(1.59) |
0 |
3/32 (2.381) |
0 |
0.126 to 0.187
(3.200 to 4.750) |
0.010
(0.2540) |
0.010
(0.2540) |
_B |
_B |
1/16
(1.59) |
0 |
3/32 (2.381) |
0 |
A Tolerance on thickness of sheet over 24 inches (609.6 mm) wide shall be ?0% of the thickness
B Tolerance on width of sheared sheet shall be +1/16 inch (1.59 mm), -0 inches (0 mm) |
