On our quality, you may rely. From the metal powder to the finished product, we manufacture our tantalum products. As a raw material, we exclusively use the purest tantalum powder. This is how we can assure you of the highest level of material purity.
For our sintered quality tantalum, we promise a purity of 99.95%. (metallic purity without Nb). A chemical study of the remaining fraction reveals that the following substances make up the majority of it:
| Element | Typical max. value [μg/g] |
Guaranteed max. value [μg/g] |
| Fe | 17 | 50 |
| Mo | 10 | 50 |
| Nb | 10 | 100 |
| Ni | 5 | 50 |
| Si | 10 | 50 |
| Ti | 1 | 10 |
| W | 20 | 50 |
| C | 11 | 50 |
| H | 2 | 15 |
| N | 5 | 50 |
| O | 81 | 150 |
| Cd | 5 | 10 |
| Hg | - | 1 |
| Pb | 5 | 10 |
Because of the manufacturing method (several heat treatments at temperatures exceeding 1000 °C in H2-atmosphere), the presence of Cr (VI) and organic contaminants can be completely avoided.
We promise that the purity of our melted tantalum will be 99.95%. (metallic purity without Nb). A chemical study of the remaining fraction reveals that the following substances make up the majority of it:
| Element | Typical max. value [μg/g] |
Guaranteed max. value [μg/g] |
| Fe | 5 | 100 |
| Mo | 10 | 100 |
| Nb | 19 | 400 |
| Ni | 5 | 50 |
| Si | 10 | 50 |
| Ti | 1 | 50 |
| W | 20 | 100 |
| C | 10 | 30 |
| H | 4 | 15 |
| N | 5 | 50 |
| O | 13 | 100 |
| Cd | - | 10 |
| Hg | - | 1 |
| Pb | - | 10 |
The manufacturing procedure (several heat treatments at temperatures above 1000 °C in H2-atmosphere) makes it possible to completely rule out the presence of Cr (VI) and organic contaminants.
Our tantalum is appropriately prepared for each application. The following characteristics resulting from various alloying additions are defined:
bodily characteristics (e.g., melting point, density, electrical conductivity, thermal conductivity, thermal expansion)
technical characteristics (e.g., strength, ductility)
Molecular composition (e.g., corrosion resistance, etching behavior)
| Material designation | Chemical composition (percent by weight) |
|
| Sintered quality S |
Sintered quality tantalum (TaS) |
> 99.95 |
| TaW2.5 | 2.5% W | |
| TaW10 | 10% W | |
| Melted quality M | Melted quality tantalum (TaM) | > 99.95 |
Workability (e.g., machinability, formability, welding suitability) (e.g., machinability, formability, welding suitability)
Behavior in structure and recrystallization (e.g., recrystallization temperature, grain size)
And we don't stop there; because to specially designed production procedures, we can also alter the properties of tantalum in various contexts. Tantalum alloys with various property profiles that are tailored to the particular application are the end product.
