I. Core Properties & Composition

    Composition & GradeThe typical magnesium content ranges from 4% to 10% (e.g., Al96Mg4, Al92Mg8), with high-magnesium formulations also available (e.g., Mg4Al3). Purity and impurity levels are controlled according to application requirements. Premium grades require low oxygen and low impurity content to ensure forming quality and mechanical performance.

    Morphology & Particle SizeIndustrial-grade powder is mostly gas-atomized spherical powder, featuring high sphericity, excellent flowability and stable apparent density. It is ideal for additive manufacturing (SLM/DMLS) and thermal spraying. Particle sizes are usually classified into grades (e.g., 15–45 μm, 45–106 μm). Fine powder has high reactivity, while coarse powder is safer and easier to handle.

    Key Performance HighlightsIt boasts low density, high specific strength and excellent corrosion resistance (often categorized as corrosion-resistant aluminum alloy). It also has good thermal and electrical conductivity. Meanwhile, the presence of magnesium enhances combustion efficiency and reaction activity, making it suitable for pyrotechnics, reducing agents and thermite applications.

II. Preparation Processes

    Gas Atomization (Predominantly Inert Gas Atomization)Molten alloy liquid is disintegrated into droplets by high-pressure inert gas, then rapidly cooled and solidified into spherical powder. As the mainstream process for high-grade powder (for additive manufacturing and thermal spraying), it enables precise control over particle size and sphericity.

    Mechanical Crushing / GrindingSuitable for coarse or non-spherical powder, this process features low cost but yields powder with inferior flowability and purity. It is mainly applied in scenarios with low requirements for powder morphology, such as metallurgical auxiliary materials and partial composite material filling.

III. Application Scenarios

    Additive Manufacturing (3D Printing)Spherical powder is used in SLM/DMLS processes to fabricate lightweight structural components, complex cavities and custom parts for aerospace and automotive industries, achieving an optimal balance between weight reduction and mechanical strength.

    Thermal Spraying & CoatingIt is applied to prepare corrosion-resistant, wear-resistant and thermally conductive coatings, which are widely used for mechanical part repair and surface strengthening.

    Powder MetallurgyThrough pressing and sintering processes, it is processed into structural components, connectors and heat-dissipating parts, ideal for mass production.

    Pyrotechnics & Energetic MaterialsServing as a burning rate regulator, illuminant and reducing agent, it is incorporated into pyrotechnic compositions, signal flares and incendiary agents. Strict dust safety control is mandatory during application.

    Metallurgy & Refractory MaterialsIt functions as an additive for magnesia-carbon bricks and a deoxidizer/desulfurizer for molten steel, improving refractory performance and metallurgical efficiency.

IV. Selection Recommendations

    For Additive Manufacturing / Thermal SprayingSelect inert gas-atomized spherical powder with low oxygen content and narrow particle size distribution (e.g., 15–45 μm) to ensure stable powder spreading, melting and forming performance.

    For Pyrotechnics / Energetic MaterialsSelect fine powder with controlled purity and impurity levels. Strictly comply with safety regulations and licensing requirements during application.

    For Metallurgical Auxiliary MaterialsSelect coarse powder or low-cost grades to balance application effectiveness and economic efficiency.