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PDF downloads» Tantalum Properties
These are the applicable specifications:
- ASTM B 708: Standard Specification for Tantalum and Tantalum Alloy Plate, Sheet, and Strip
- ASTM B 365: Standard Specification for Tantalum and Tantalum Alloy Rod and Wire
- ASTM B 521: Standard Specification for Tantalum and Tantalum Alloy Seamless and Welded Tubes
- ASTM F 560: Standard Specification for Unalloyed Tantalum for Surgical Implant Applications (UNS R05200, UNS R05400)
There are several different kinds of Tantalum (Tantal Sonderwerkstoffe Apparatebau, Tantale) under ASTM specification. Pure Tantalum is known as RO5200, R05252 (97.5 % Tantalum 2.5 % Tungsten / Wolfram) and R05240 (60 % Tantalum 40 % Columbium / Niobium).
» Composition
| Element [%] | RO5200 | R05252 | R05240 |
| C | <0.05 | <0.05 | <0.05 |
| O | <0.1 | <0.1 | <.2 |
| N | <0.05 | <0.05 | <0.05 |
| H | <10 | <10 | <10 |
| Nb | <300 | 500 | 35.0-42.0 |
| Fe | <10 | <10 | <10 |
| Ti | <10 | <10 | <10 |
| W | <0.05 | 2.5-3.5 | <0.05 |
| Mo | <10 | <10 | <10 |
| Si | <10 | <10 | <10 |
| Ni | <10 | <10 | <10 |
| Ta | 99.95%+ | 97.5% | 60% |
» Mechanical Data
| Property dia 3 - 63 mm | RO5200 | R05252 | R05240 |
| Tensile Strength ksi (MPa) | 25 (172) | 40 (276) | 35 (244) |
| 0.2% Proof Stress ksi (MPa) | 15 (103) | 28 (193) | 15 (103) |
| Elongation over 2 Inches % | 25 | 20 | 25 |
However targets are supplied in much higher purity and according to different specifications. Please contact us for more details.
