Material · AlSi10Mg · DMLS

Aluminum AlSi10Mg — DMLS aluminum for lightweight structure.

AlSi10Mg is the most common DMLS aluminum alloy — a silicon-magnesium casting alloy optimized for laser powder-bed fusion. After T6 heat treatment it reaches 460 MPa tensile, enough for structural aerospace brackets, heat exchangers, and topology-optimized lightweight components.

QUICK SPECS

CompositionAl balance, 9–11% Si, 0.2–0.45% Mg

Density2.68 g/cm³

Tensile (as-built)350 MPa

Tensile (T6 heat-treated)460 MPa

Yield (T6)270 MPa

Elongation (T6)8–10%

Thermal conductivity130 W/m·K

STATUSIN OPERATION

§ 01 / WHY

Why AlSi10Mg over 6061 / 7075 for additive

Common wrought aluminum alloys (6061, 7075) don't DMLS-print well. They crack during solidification due to their chemistry. AlSi10Mg is a eutectic-alloy designed to print — silicon fills the solidification shrinkage, preventing cracks.

Tradeoff: AlSi10Mg after T6 has lower strength than 7075 (460 vs 572 MPa) but better printability and post-weld behavior. For weight-critical parts, T6 AlSi10Mg is standard. For maximum strength at any cost, DMLS A20X or machined 7075 are alternatives.

§ 02 / APPLICATIONS

Applications

Aerospace bracketsTopology-optimized brackets replacing multi-piece CNC assemblies. 30–50% weight reduction typical.

Heat exchangersInternal conformal channels impossible to machine. Good thermal conductivity (130 W/m·K).

Automotive lightweightMotorsport and EV structural nodes. Low-volume viable economics.

Tooling & fixturesCustom jigs with integrated features. Faster than machined from billet for complex geometries.

Injection mold cooling insertsConformal cooling channels in hotspot areas of mold cores. Reduces cycle time.

Hydraulic / pneumatic manifoldsIntegrated flow paths, reduced fittings, no leak points.

READY WHEN YOU ARE

DMLS aluminum parts in 7–10 days.

Upload STEP. Typical flow: DMLS → stress relief → T6 heat treat → machining of critical surfaces → shipment.

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