Description
Physical properties:
light gray powder with high melting point and corrosion resistance.
Chemical composition: implement YS/T 258-1996 standard (impurity content ≤%)
| Impurity element | Niobium powder for metallurgy YS/T 258-1996 | ||
| FNb-1 | FNb-2 | FNb-3 | |
| O | 0.20 | 0.20 | 0.50 |
| H | 0.005 | 0.005 | 0.01 |
| C | 0.05 | 0.05 | 0.08 |
| N | 0.04 | 0.06 | – |
| Fe | 0.01 | 0.05 | – |
| Si | 0.005 | 0.01 | – |
| Ni | 0.005 | 0.005 | – |
| Cr | 0.005 | – | – |
| Ta | ≤0.20 | ≤0.50 | – |
| W | 0.005 | 0.01 | – |
| Mo | 0.003 | 0.005 | – |
| Ti | 0.003 | 0.005 | – |
| Mn | 0.003 | 0.005 | – |
| Cu | 0.003 | 0.005 | – |
| P | – | – | 0.01 |
| S | – | – | 0.01 |
| Zr | – | – | – |
| Al | |||
| ≤Nb+Ta | – | – | 98 |
