ASTM B708
Unalloyed tantalum R05200 chemistry and annealed mechanical properties, with the two thickness ranges shown separately.
Tantalum Plate, Sheet & Strip
Edition: B708-05
1 linked material grade
Material requirements.
Clearly organized.
Unalloyed tantalum R05200 chemistry and annealed mechanical properties, with the two thickness ranges shown separately.
Material forms, conditions and dimensional ranges are shown alongside the relevant property values.
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Open a material page or switch between chemical composition and mechanical properties.
Composition & Mechanical Properties
| Grade / UNS | C % | O % | N % | H % | Fe % | Mo % | Nb % | Ni % | Si % | Ti % | W % | Ta |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tantalum R05200 | ≤0.010 | ≤0.015 | ≤0.010 | ≤0.0015 | ≤0.010 | ≤0.020 | ≤0.100 | ≤0.010 | ≤0.005 | ≤0.010 | ≤0.050 | Remainder |
Composition values are mass percentages. ≤ indicates a maximum; ≥ indicates a minimum.
| Grade / UNS | Product form / condition | Tensile min (MPa) | Yield min (MPa) | Elongation min (%) | Hardness |
|---|---|---|---|---|---|
| Tantalum R05200 | Annealed · Thickness <0.060 in. (1.524 mm) | 207 | 138 | 20 | — |
| Tantalum R05200 | Annealed · Thickness ≥0.060 in. (1.524 mm) | 172 | 103 | 30 | — |
- The chemical row shows the ingot limits for electron-beam / vacuum-arc R05200.
- When finished-product analysis is specified, the additional limits are O ≤0.025%, N ≤0.010%, H ≤0.0015% and C ≤0.020%.
- Elongation uses a 1 in. gauge length. The tensile rows apply to annealed material.
- No mechanical-property requirements are established for unannealed plate, sheet or strip in this edition.
From material form
to gasket component.
Review the listed material grade and its delivery condition when selecting winding strip or ring stock for a specified gasket design.
Material standards and gasket standards serve different purposes.
ASTM B708 addresses the material forms identified on this page. Finished metallic gasket requirements are addressed separately by the applicable gasket standard.
Explore ASME B16.20 →Common questions
Material coverage and property conditions for this standard.
Which website material grades are included?
Tantalum.
What edition is used for these tables?
The tables use ASTM B708-05.
Are material properties independent of condition?
No. The mechanical table identifies the applicable product form, condition and dimensional range for each listed row.