Metal (LPBF)

Aluminium 3D printing

AlSi10Mg is an aluminum alloy for powder-bed 3D printing (LPBF): light and suited to parts with complex geometry. We offer aluminum 3D printing, quoted job by job.

1 variantData checked on 13 November 2026

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What it is for

AlSi10Mg is used for light metal parts with complex geometry: lightened brackets and supports, heat exchangers and heat sinks with internal channels, manifolds, housings, electronics enclosures, gripping tools for robots, functional prototypes of aluminum castings. Powder-bed printing allows internal channels, thin walls and optimized shapes that casting and milling do not.

It does not pay for simple parts that can be milled from solid, nor for large series, where casting and machining remain cheaper. Mating surfaces and accurate holes are usually finished by machining. For higher strength choose titanium or stainless steel.

Variants compared

Aluminium: properties of the variants from the makers' data sheets, one column per variant
Property	AlSi10MgQuote
Mechanical
Tensile strengthXY, as built, 30 µm layers	450 MPastandard not stated on the sheet460 MPa Z
Yield strength (Rp0.2)XY, as built, 30 µm layers	270 MPastandard not stated on the sheet230 MPa Z
Elongation at breakXY, as built, 30 µm layers	10.2%standard not stated on the sheet6.3% Z
Hardnessas built, 30 µm layers	119 HBWstandard not stated on the sheet
Physical
Density	2.67 g/cm³standard not stated on the sheet
Source	Supplier's data sheetread on 13 November 2026

Typical values from the makers' data sheets, measured on specimens under the conditions stated. They are not guaranteed design values: for a critical application ask us for a test on your part.

Design limits

Build volume: 400 × 400 × 400 mm
Minimum feature: 0.75 mm
Dimensional tolerance: ±0.2% (minimum ±0.1–0.2 mm)

These are the limits of the process, the same for every variant unless stated. For critical dimensions, talk to us before printing.

Which variant to choose

In aluminum we offer the AlSi10Mg alloy. Choose titanium if you need more strength for the same weight, or corrosion resistance; stainless steel if hardness and strength matter more than weight. Other aluminum alloys are on request.

Data sheets

Supplier's data sheetread on 13 November 2026
Columns: AlSi10Mg

FAQ

Frequently asked questions

The process data sheet reports, for parts as built with 30 µm layers, a tensile strength of 450 MPa in XY and 460 MPa in Z, a yield strength of 270 and 230 MPa, an elongation at break of 10.2% and 6.3% and a hardness of 119 HBW. The sheet does not state the test standard.

When the geometry is hard or impossible to mill: internal channels, lightened structures, several parts merged into one. For simple shapes milling from solid remains cheaper and more accurate. For a few complex parts, printing avoids molds and dedicated tooling.

It depends on its functions. The as-built surface is rough and the tolerances are those of the process, given in the «Design limits» section of this page. Seats, sealing faces, calibrated holes and threads are usually finished by machining. Mark the critical dimensions and the surfaces to machine on the drawing.

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