ODM Fine Magnesium Powder Exporter & Companies

Mechanically milled magnesium powder features jagged, irregular particles characterized by high internal shear stresses, wide particle size distributions, and high surface micro-roughness. In contrast, inert gas atomized spherical powder provides exceptional sphericity, uniform surface tension, high apparent and tap densities, and superior flowability (essential for additive manufacturing re-coater systems and continuous injection systems). Atomized powders also feature an extremely thin, homogeneous natural passivation layer that ensures predictable chemical reactivity and elevated oxidation resistance compared to mechanically fractured chips.

Fine magnesium powders are regulated internationally under UN Dangerous Goods codes based on their particle size and specific surface passivations. Pure uncoated fine magnesium powder is typically classified as UN 1418 (Magnesium powder, Class 4.3, Dangerous When Wet, with a Class 4.2 secondary spontaneous combustion hazard) or UN 1869 (Magnesium or magnesium alloys, Class 4.1 Flammable Solid) for coarser granulates. Surface-treated or coated formulations may adjust packaging group classifications. Our compliance division provides complete dangerous goods declarations, compliant UN-rated steel drums, desiccated nitrogen/argon blankets, and full IMO/IMDG/IATA/ADR certification.

Yes. Our Ningxiang atomization facility features multi-stage inert-gas aerodynamic classification and ultrasonic screening decks. We routinely engineer tailor-made distributions such as 15–45 µm (for LPBF / 3D printing), 20–63 µm, 45–106 µm (for thermal spray and metal injection molding), or sub-38 µm / 400-mesh fractions for energetic pyrotechnics. Customers can specify exact D10, D50, and D90 parameters along with required tap density thresholds to match their precise tool tooling or injection geometries.

We provide multiple proprietary passivation options depending on the intended final application:
1. Fatty Acid / Organic Stearate Coatings: Provide a microscopic hydrophobic barrier that repels atmospheric moisture during hopper handling and storage, ideal for press-and-sinter powder metallurgy.
2. Inorganic Silane / Oxide Enrichment: Controlled thermal gas passivations that prevent spontaneous ignition while disintegrating rapidly at sintering or melting temperatures.
3. Polymeric Encapsulation: Custom resin or silicone oil coatings tailored for composite compounding and thermal management interface materials.

Our quality assurance department operates an accredited analytical laboratory certified to ISO 9001:2015. Every production batch is analyzed via Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) to quantify trace elements (Fe, Si, Cu, Ni, Mn, Cl, Ca) down to part-per-million (ppm) resolutions. Moisture content is measured using Karl Fischer coulometric titration, particle size distributions are certified via laser diffraction (ISO 13320), and specific surface area is verified via BET nitrogen adsorption analysis. Detailed Certificates of Analysis (COA) accompany every shipment.

For standard catalog atomized grades, our minimum order quantity starts at 100 kg packaged in UN-certified steel drums. For custom ODM powder synthesis—requiring non-standard pre-alloying, specialized PSD cutting, or proprietary surface passivations—the typical development MOQ is 500 kg to 1,000 kg. Standard delivery lead times range from 2 to 4 weeks depending on scheduling, packing gas requirements, and vessel booking for international dangerous goods container shipping.