Overview
AlSi10Mg is a cast-grade aluminum alloy printing at ≥99.5% relative density, with an excellent strength-to-weight ratio (285-345 MPa tensile, 2.67 g/cm³) and useful thermal conductivity of 103-173 W/m·K.
Its ~10% silicon content reproduces fine detail tightly, making it the metal of choice for heat exchangers, lightweight brackets and topology-optimized housings.
Key Properties
Typical datasheet values; printed parts are anisotropic and XY-direction values are shown unless noted.
| Property | Value |
|---|---|
| Tensile strength | 285–345 MPa（應力消除態） |
| Yield strength (Rp 0.2%) | 170–210 MPa |
| Elongation at break | 8–13 % |
| Density | ≈2.67 g/cm³ |
| Elastic modulus | ≈70 GPa |
| Thermal conductivity | 103–173 W/m·K |
| Hardness | ≈110–124 HV5 |
Typical Applications
- Heat sinks and heat exchangers
- Lightweight structural brackets
- Aerospace and motorsport components
- Drone and robotics chassis
- Fluid manifolds
Printing & Handling Notes
Standard finish includes furnace stress relief (Ra 5-10 µm after finishing). Optional machining, tapping, T6 heat treat, media blasting and anodizing (anodized finish runs darker due to silicon).
