Technical Data Sheet
Doc No: TDS-MP-024  |  Rev: 01
Issued: 2026-08-21  |  Page 1 of 1

Spherical AlSi7Mg Aluminum Alloy Powder

CAS — AlSi7Mg (A357 type) AM / 3D-Printing Powder

Powder Characteristics

PropertyValueTest Method
Particle Size Cut15–53 μm (other cuts on request)Laser diffraction
PSD, typical (D10/D50/D90)22 / 36 / 57 μmLaser diffraction
Apparent Density, typical1.2 g/cm³ASTM B212 / GB-T 1479.1
Typical values per manufacturer COA; lot values may vary. Lot-specific COA & PSD report supplied with each shipment.

Chemical Composition (Specification)

Element / ComponentSpecificationTest Method
Aluminum (Al)BalanceICP-OES / LECO
Silicon (Si)6.5–7.5%ICP-OES / LECO
Magnesium (Mg)0.25–0.45%ICP-OES / LECO
Iron (Fe)≤ 0.20%ICP-OES / LECO

Typical Applications

Packaging Vacuum-sealed argon-filled containers; quantity per inquiry
Storage & Shelf Life Sealed, dry, inert atmosphere recommended. Avoid moisture.
All values are typical and may vary by lot. This TDS does not constitute a warranty. Contact TKNCO for lot-specific Certificate of Analysis (COA).