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Stoichiometric Tantalum Carbide (TaC) and Tantalum Niobium Carbide (TaNbC) can be used as an additive to WC-Co ready-to-press grade powders in order to enhance the physical properties of the sintered structure. TaC and TaNbC are frequently used in steel cutting grade powder attritions to maintain structure edge strength at high temperatures. In addition, TaC can be used as a grain growth inhibitor preventing the formation of large grains and increasing the hardness of the sintered part. OSRAM SYLVANIA co-carburizes Tantalum Pentoxide and Niobium Pentoxide to manufacture TaNbC powders with a wide range of metal ratios.
For more details on both TaC and TaNbC see our
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 Properties for Tantalum Carbide
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Physical Analysis
| FSSS |
Range |
Typical |
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0.8 to 2.0 microns |
0.8 to 1.5 microns |
| Chemical Analyses |
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Maximum /Range* |
Typical |
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Total Carbon |
6.15 to 6.30% |
6.20 to 6.30% |
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Niobium |
2500ppm |
300ppm |
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Oxygen |
2000ppm |
950ppm |
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Nitrogen |
1000ppm |
250ppm |
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Iron |
1000ppm |
200ppm |
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Titanium |
50ppm |
<5ppm |
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Tungsten
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5000ppm
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2000ppm
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Free Carbon |
0.15% |
<0.10% |
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| *Note: Maximum limits listed are for standard material specifications.
OSRAM SYLVANIAspecializes in manufacturing material to customer
specifications and different maximum limits may be requested.
For more information on our TaNbC powders see our Technical Information Bulletin.
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