AZ91 Magnesium Alloy Powder (AZ91 MG, 99.95%, 15-53 μm)

Technical Specifications of AZ91 Magnesium Alloy Powder

1. Chemical Composition:

   • Magnesium (Mg): Balance (~90%)
   • Aluminum (Al): 8.3–9.7%
   • Zinc (Zn): 0.45–0.9%
   • Manganese (Mn): 0.17–0.5%
   • Silicon (Si): ≤ 0.05%
   • Iron (Fe): ≤ 0.005%
   • Copper (Cu): ≤ 0.025%
   • Nickel (Ni): ≤ 0.002%
   • Other elements (each): ≤ 0.02%
   • Total impurities: ≤ 0.3%

2. Physical Properties:

   • Purity: 99.95%
   • Particle Size: 15-53 μm (microns)
   • Density: ~1.81 g/cm³
   • Melting Point: ~595–620°C
   • Morphology: Spherical or irregular, depending on the production method (e.g., gas atomization)
   • Color: Light gray metallic
   • Thermal Conductivity: ~72 W/m·K
   • Electrical Conductivity: ~20-30% IACS (compared to copper)

3. Mechanical Properties (Bulk AZ91 Alloy):

   • Tensile Strength: 150–230 MPa
   • Yield Strength: 100–160 MPa
   • Hardness: ~63-80 HV
   • Elongation: 1-3%
   • Corrosion Resistance: Improved compared to pure Mg due to Al content

4. Production Method:

   • Gas atomization
   • Plasma rotating electrode process (PREP)
   • Mechanical milling

Applications of AZ91 Magnesium Alloy Powder

1. Additive Manufacturing (AM) & 3D Printing:

   • Used in Selective Laser Melting (SLM) and Electron Beam Melting (EBM)
   • Produces lightweight and high-strength Mg parts for aerospace and biomedical applications

2. Powder Metallurgy (PM):

   • Used in hot pressing, sintering, and compaction to create structural components with lightweight and corrosion-resistant properties

3. Automotive & Aerospace Components:

   • Ideal for lightweight structural parts, reducing overall vehicle weight and improving fuel efficiency
   • Applications in aircraft brackets, drones, and aerospace panels

4. Medical & Biodegradable Implants:

   • Biocompatible and biodegradable, making it useful for temporary orthopedic implants (bone screws, plates, and stents)
   • Reduces the need for surgical removal after healing

5. Coating and Surface Modification:

   • Used in thermal spraying and cold spraying to create wear-resistant and corrosion-resistant coatings on lightweight substrates

6. Battery and Energy Storage:

   • Investigated for use in magnesium-ion batteries due to its lightweight and electrochemical properties

7. Electronic and Defense Applications:

   • Used in lightweight electronic casings and military-grade materials requiring high strength-to-weight ratios

8. Hydrogen Storage:

   • Magnesium-based powders, including AZ91, are researched for use in hydrogen storage materials due to Mg’s ability to absorb hydrogen