タングステン(W)粉
Tungsten Powder
規格(Specification)
| W | 99.9% |
| Fe | 0.030% |
| Si | 0.005% |
| Al | 0.003% |
| Mn | 0.002% |
| Ca | 0.003% |
| Sn | 0.002% |
| Cu | 0.002% |
| Na | 0.020% |
| S | 0.020% |
| C | 0.010% |
| 粒度 (particle size) | 見かけ密度 (g/cm3) | 酸素(O) |
| 1~3μm | 3.3-4.2 | 0.25% |
| 3~5μm | 3.8-4.8 | 0.20% |
| 5~8μm | 4.2-5.2 | 0.20% |
| 8~15μm | 4.5-6.0 | 0.15% |
| -60mesh | 8.0-8.9 | 0.05% |
| -100mesh | 7.8-8.5 | 0.05% |
| -200mesh | 7.3-8.0 | 0.05% |