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| Products - Tantalum |
ASTM B521: Properties for Seamless and Welded Tantalum Tubes
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ASTM B521:
Mechanical Properties for Seamless and Welded Tubes |
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R05200/
R05400 |
R05252 |
R05255 |
R05240 |
| Ultimate Tensile Strength, min psi (MPa) |
30,000 (207) |
40,000 (276) |
70,000 (481) |
40,000 (226) |
| Yield Strength, 0.2% offset, min, psi (MPa) |
20,000 (138) |
28,000 (193) |
60,000 (414) |
28,000 (193) |
| Elongation, min %, 1 or 2 inches (25 or 51 mm) |
25 |
20 |
15 |
20 |
ASTM B521:
Permissible Variations in Outside Dimensions for Seamless and Welded Tubes |
Outside
inches (mm) |
Diameter Tolerance*
Plus or Minus
inches (mm) |
Permissible Variations**
in Wall Thickness, % |
Under 1 (25.4), excl.
1 to 1.5 (25.4 to 38.1), excl. |
0.004 (0.102)
0.005 (0.127) |
10
10 |
* Permissible variations in outside diameter apply only to tubes as finished at the mill before subsequent swagging, expanding, bending, polishing or other fabricating operation. Ovality is the maximum and minimum outside diameter of a tube measured at any one cross section. If the measurement is made with a ring gauge, the following formula shall apply: Ovality = (specified OD tube + diameter tolerance + 0.002 inches length of ring gauge, 1 inch) x nominal diameter
** When wall tubes are ordered, tolerances are all plus and shall be double the values shown |
ASTM B521:
Straightness of Seamless and Welded Tubes |
Welded Tubes Length, ft. (m) |
Maximum Curvature Depth of Arc |
3 to 6 (0.91 to 1.83), incl.
6 to 8 (1.83 to 2.44), incl.
8 to 10 (2.44 to 3.05), incl.
Over 10 (3.05) |
1/8 inch (3.2 mm)
3/16 inch. (4.8 mm)
1/4 inch. (6.4 mm)
1/4 inch/any 10 ft (2.1 mm/m) |
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