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The content of Niobium is over 99.95%. The diameter is 180mm, 160mm, 150mm, 130mm, 120mm or 110mm.
Niobium Ingot (%)
| Element | C | N | O | H | Ta | Si | Mn | Al | Cr | Cu | Fe | Mo | Ni | Ti | W | Zr | 
| ND-1 | 0.003 | 0.003 | 0.01 | 0.001 | 0.03 | 0.001 | 0.003 | 0.001 | 0.001 | 0.001 | 0.002 | 0.003 | 0.001 | 0.001 | 0.003 | 0.002 | 
| ND-2 | 0.005 | 0.01 | 0.015 | 0.0015 | 0.1 | 0.005 | 0.005 | 0.005 | 0.005 | 0.005 | 0.005 | 0.01 | 0.005 | 0.005 | 0.01 | 0.005 |