| Category | Metal , Nonferrous Metal , Niobium Alloy , Refractory Metal , Pure Element |
| Manufacturer | H.C. Starck |
| Trade Name | |
| Port | Ningbo port,China |
| Trade Terms | FOB, CFR, CIF |
| Payment Terms | L/C, T/T, Western Union |
| Download PDF | H.C. Starck Pure Niobium (Columbium).pdf |
| Price | EMAIL US sales@lookpolymers.com |
| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Specific Gravity | 8.47 g/cc | 8.47 g/cc |
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Hardness, Vickers | 50 - 80 | 50 - 80 | annealed |
| Tensile Strength, Ultimate | >= 112 MPa | >= 16200 psi | re-crystallized |
| >= 124 MPa @Temperature 20.0 °C |
>= 18000 psi @Temperature 68.0 °F |
||
| Tensile Strength, Yield | >= 84.8 MPa @Temperature 20.0 °C |
>= 12300 psi @Temperature 68.0 °F |
typical |
| Elongation at Break | >= 25 % | >= 25 % | |
| Modulus of Elasticity | 103 GPa | 15000 ksi | |
| Poissons Ratio | 0.38 | 0.38 | |
| Shear Modulus | 37.3 GPa | 5410 ksi | Calculated |
| Thermal Properties | Metric | English | Comments |
|---|---|---|---|
| CTE, linear | 12.8 µm/m-°C @Temperature 20.0 - 100 °C |
7.10 µin/in-°F @Temperature 68.0 - 212 °F |
|
| Specific Heat Capacity | 0.272 J/g-°C @Temperature 27.0 °C |
0.0650 BTU/lb-°F @Temperature 80.6 °F |
|
| Thermal Conductivity | 52.3 W/m-K | 363 BTU-in/hr-ft²-°F | |
| Melting Point | 2468 °C | 4474 °F |
| Component Elements Properties | Metric | English | Comments |
|---|---|---|---|
| Niobium, Nb (Columbium, Cb) | >= 99.8 % | >= 99.8 % | Type II - Commercial Grade |
| >= 99.9 % | >= 99.9 % | Type I - Reactor Grade | |
| Tantalum, Ta | <= 0.10 % | <= 0.10 % | Type I - Reactor Grade |
| <= 0.20 % | <= 0.20 % | Type II - Commercial Grade |
| Electrical Properties | Metric | English | Comments |
|---|---|---|---|
| Volume Resistivity | 0.0000145 ohm-cm @Temperature 0.000 - 100 °C |
0.0000145 ohm-cm @Temperature 32.0 - 212 °F |
|
| Critical Superconducting Temperature | 9.20 K | 9.20 K |
| Chemical Properties | Metric | English | Comments |
|---|---|---|---|
| Atomic Mass | 92.91 | 92.91 | |
| Atomic Number | 41 | 41 | |
| Thermal Neutron Cross Section | 1.1 barns/atom | 1.1 barns/atom |
| Descriptive Properties | Value | Comments |
|---|---|---|
| Thermal Resistivity | 1 |