AlSi10Mg is an aluminum alloy that combines good strength and thermal properties with low weight and flexible post-processing possibilities. For those reasons, it’s an often used material in automotive, aerospace and automation. Applications include housings, ductwork, engine parts, production tools and molds, both for prototyping and manufacturing purposes.

Technical Specifications

Standard lead time Minimum of 10 working days, depending on part size, number of components and finishing degrees (online & offline orders)
Standard accuracy ± 0.2% (with lower limit on ± 0.2 mm)
Minimum wall thickness 0.5 mm
Layer thickness 0.03 – 0.1 mm
Maximum part dimensions 500 x 280 x 345 mm (offline orders)
440 x 220 x 320 mm (online orders)
Surface structure Unfinished parts typically have a rough surface but various finishing degrees can achieve smooth surfaces


  Units ASTM# Range
(after heat treatment)
Density g/cm³     2.68
Tensile Strength MPa  DIN EN ISO 6892-1:2009 335 - 355
E-Modulus GPa DIN EN ISO 6892-1:2009 50 - 70
Yield strength MPa  DIN EN ISO 6892-1:2009 215 - 245
Hardness HV5 DIN EN ISO 6506-1 114 - 124
Thermal conductivity W/m°C   163 - 183
Relative Density %   > 99.5
Specific Heat Capacity J/(kg K)   840 - 940
Air - and Watertight     Yes
Elongation at Break  DIN EN ISO 6892-1:2009 9 - 13

Actual values may vary with build condition

Design Guidelines

We’ve put together our trusted tips, tricks and best practices to get you off to a solid start. If you’ve been wondering whether this material allows for interlocking parts or embossing, or if you just want to avoid common design mistakes, check out this handy design guide.

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How Does Metal 3D Printing Work?

Metal 3D Printing is a laser-based technology that uses powdered metals. Similar to Laser Sintering, a high-powered laser selectively binds together particles on the powder bed while the machine distributes even layers of metallic powder. Support structures are automatically generated and built simultaneously in the same material, and are later manually removed. Once complete, the part undergoes heat treatment.