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APT- AlSi7Mg
● Good mechanical performance
● High - precision complex shape forming
● Microstructure adjustment
● Moderate corrosion resistance
● Fast prototyping and production
● High material efficiency
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APT-AlSi7Mg Aluminum Alloy for 3D Printing

AptPrototype presents AlSi7Mg, a versatile aluminum-silicon-magnesium alloy designed for precision metal 3D printing. Combining balanced strength, ductility, and process adaptability, AlSi7Mg excels in applications requiring lightweight structures, fast prototyping, and customized performance. Ideal for aerospace, automotive, consumer electronics, and industrial tooling, this alloy delivers high material efficiency and exceptional printability for complex geometries.

  • Powder Grade AlSi7Mg (Aluminum Alloy)
  • Particle Size Distribution 15 - 45 μm, 25 - 63 μm, 45 - 90 μm
  • Flowability (s/50g) ≤22s
  • Bulk Density (g/cm³) ≥1.35 g/cm³
  • Sphericity ≥0.94
  • Oxygen Content (ppm) ≤750 ppm
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Mechanical Properties (After Heat Treatment)

Property

Value

Tensile Strength

300 - 400 MPa

Yield Strength

180 - 300 MPa

Elongation

8 - 15%

Hardness (HV)

100 - 140 HV

Material Advantages

Balanced Strength & Ductility

Offers an optimal combination of mechanical properties for functional prototypes and end-use parts requiring both durability and flexibility.

High Precision for Complex Shapes

Enables intricate designs with fine details, ideal for lightweight lattice structures and thin-walled components.

Tailorable Microstructure

Adjust process parameters (e.g., laser power, scan speed) to optimize grain structure and performance for specific applications.

Corrosion Resistance

Suitable for components exposed to moderate environmental or chemical stress.

Rapid Prototyping & Production

High print speed and material efficiency reduce lead times and costs for iterative development.

Minimal Post-Processing

Achieves near-net-shape accuracy, lowering machining requirements and material waste.

Applications and Use Cases

Industry

Application

Aerospace

Lightweight brackets, drone frames, and non-critical structural components

Automotive

Engine mounts, sensor housings, and lightweight interior parts

Consumer Electronics

Heat dissipation modules, connector housings, and custom enclosures

Industrial Tooling

Jigs, fixtures, and molds for low-to-medium volume production
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Why Choose AptPrototype?

Consistent Quality

Powders produced under strict ISO standards for reliable printability.

Customizable Solutions

Adapt particle sizes and post-processing workflows to meet your project’s needs.

Technical Expertise

End-to-end support from design optimization to final finishing.

Additional Information

Surface Treatments
Enhance AlSi7Mg components with:
Chemical Polishing – Smooth surface finishes for aesthetic or functional requirements.
Heat Treatment – Adjust mechanical properties (e.g., stress relief, aging).
Protective Coatings – Apply anti-oxidation or wear-resistant layers.
Technical Notes
Compatible with SLM, DMLS, and BJF technologies.
Supports lightweight topology optimization for energy-efficient designs.

FAQ

  • How does AlSi7Mg differ from ALSi10Mg?

    AlSi7Mg has slightly lower silicon content, prioritizing ductility and print speed over peak strength. It is ideal for applications where flexibility and cost-efficiency are key.

  • Can AlSi7Mg be used for high-temperature applications?

  • Is AlSi7Mg recyclable?

Get Started with AptPrototype

Leverage AlSi7Mg’s versatility for your next 3D printing project! Upload your design for a quote and expert feedback.
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