Niobium Powder
Niobium is a lustrous, grey, ductile, paramagnetic metal. Like tantalum, niobium also features outstanding chemical and oxidation resistance. Niobium powder can be added to iron or nickel to produce alloys in the aerospace, medical, and electronics industries. 90% niobium powder is used to produce high-grade structural steel, followed by its use in superalloys.
Niobium Powder Features
• Physical properties: Light gray powder, excellent melting point, and corrosion resistance
• Application: Used as additive of alloy, and production of welding electrode.
Niobium Powder for Metallurgical Purposes
| Grade | FNb-1 | FNb-2 | FNb-3 | FXNb-1 | FXNb-2 | FXNb-3 | |
|---|---|---|---|---|---|---|---|
| Nb+Ta,%,Minimum | – | – | 98 | – | – | – | |
| Impurity Content ,%,Max | Ta | 0.2 | 0.5 | – | 0.1 | 0.2 | 0.3 |
| O | 0.2 | 0.2 | 0.5 | 0.3 | 0.35 | 0.5 | |
| H | 0.005 | 0.005 | 0.01 | 0.005 | 0.01 | 0.01 | |
| N | 0.04 | 0.06 | – | 0.02 | 0.04 | 0.05 | |
| C | 0.05 | 0.05 | 0.08 | 0.02 | 0.04 | 0.04 | |
| Fe | 0.01 | 0.05 | – | 0.01 | 0.02 | 0.03 | |
| Si | 0.005 | 0.01 | – | 0.005 | 0.01 | 0.01 | |
| Ni | 0.005 | 0.005 | – | 0.005 | 0.01 | 0.01 | |
| Cr | 0.005 | – | – | 0.005 | 0.01 | 0.01 | |
| W | 0.005 | 0.01 | – | 0.005 | 0.01 | 0.01 | |
| Mo | 0.003 | 0.005 | – | 0.005 | 0.01 | 0.01 | |
| Ti | 0.003 | 0.005 | – | 0.005 | 0.01 | 0.01 | |
| Mn | 0.003 | 0.005 | – | 0.005 | 0.01 | 0.01 | |
| Cu | 0.003 | 0.005 | – | 0.003 | 0.006 | 0.006 | |
| Al | 0.003 | 0.006 | 0.006 | ||||
| P | – | – | 0.01 | – | – | – | |
| S | – | – | 0.01 | – | – | – | |
| Sieve Mesh | -100mesh, -80mesh, -325meh | ||||||
| Re-inspected plus sieve powder shall be less than 5% | |||||||
| Special requirements to be agreed upon by the supplier and buyer | |||||||
Spherical Niobium Powder
ARS’s spherical Niobium metal powder is also a material for 3D printing. It produces the metal objects directly with high-density and accurate shape by DMLS (direct metal laser sintering), which is a typical 3D printing technique. The combination of low oxygen content, spherical shape, and excellent flowability makes our powders perfectly printable, and contributes to achieve outstanding characteristics of 3D printed parts.
Physical Properties of Spherical Niobium Powder
| Size | 15-53 um/45-106 um | ||||
|---|---|---|---|---|---|
| Shape | Spherical shape | ||||
| Melting Point | 2477℃ | ||||
| Apparet Density | ≥4.6 g/cm3 | ||||
| Tap Density | ≥5.7 g/cm3 | ||||
| Hall Flow Rate | ≤15 s/50g |
Chemical Composition of Spherical Niobium Powder
| Chemical Composition – by ICP-AES | ||||||
|---|---|---|---|---|---|---|
| Element | Nb | Cu | W | Mo | Fe | Ni |
| Value (%) | ≥99.9 | ＜0.001 | ＜0.005 | ＜0.003 | ＜0.005 | ＜0.002 |
| Element | Cr | Ti | Ta | Al | Mn | Si |
| Value (%) | ＜0.002 | ＜0.002 | ＜0.05 | ＜0.002 | ＜0.002 | ＜0.001 |
| Gas Impurities | ||||||
| Element | C | O | ||||
| Value (%) | ≤0.01 | 0.001 | ||||
Features of Spherical Niobium Powder
– Extremely low oxygen content.
– High tap density.
– Spherical shape with smooth surfaces.
– Very good flowability.
