• Key Parameters
6N Grade:
Particle Size: 12–15 μm (standard),
customizable to nanometer scale as needed
Impurities: O ≤ 5 ppm, Fe ≤ 1 ppm
7N Grade:
Particle Size: 50–200 nm
Impurities: O ≤ 0.5 ppm, C ≤ 1 ppm
Export of 7N material requires an export license.
•The grading standards for the purity
Grade | Purity | Impurity Limits | Application Fields |
4N | 99.9% | ≤1.5ppm |
|
5N | 99.999% | ≤1.5ppm |
|
6N | 99.9999% | ≤1ppm | Electronics, 3D Printing, Catalysis |
7N | 99.99999% | ≤0.1ppm | Quantum Technology, Defense Industry |
8N-9N | 99.999999– 99.9999999% | ≤0.01ppm | Scientific Research (Nuclear Fusion) |
•Classification of the shape and size
Shape | Dimensions | Manufacturing Technology | Application Fields |
Spherical | 0.1‑50 µm (Micrometer grade) | Gas Atomization Method | 3D Printing, Conductive Paste |
/ | 50‑200 nm (Nanometer grade) | Plasma Chemical Synthesis Method | Nano‑Electronic Devices |
Scale-shaped | 1‑100 µm | Mechanical Ball Milling Method | Wear‑Resistant Coating |
Dendritic | 10‑500 µm | Low‑Current‑Density Electrolysis Method | Catalysts, Porous Electrodes |
Nanowire | 20‑100 nm × 10 µm | CVD/Electrochemical Deposition Method | Flexible Electronics |
