Aluminum to Magnesium Conversion: 33% Weight Reduction

Achieving 33% Weight Reduction with Magnesium

A Deep-Dive Case Study: Converting a UAV Structural Frame from Aluminum to Magnesium.

In high-stakes industries like UAV (Drones) and Electric Vehicles (EV), every gram matters. We recently partnered with a leading drone manufacturer to hit an aggressive “weight wall.” By converting their core structural frame from Aluminum (ADC12) to Magnesium (AZ91D), we delivered a 33% total weight reduction without compromising structural rigidity.

Integrated Engineering: From initial AZ91D casting to advanced MAO surface protection.

The Conversion Strategy

Magnesium is the lightest structural metal available, but successful conversion requires more than just a material swap. Our engineering team focused on two “Make or Break” areas:

1. Wall Thickness Optimization

Magnesium’s superior fluidity compared to aluminum allows for thinner sections. We utilized Magmasoft simulation to safely reduce wall thicknesses to 1.0mm in non-load-bearing zones, stripping away unnecessary weight while maintaining strength.

2. Advanced Corrosion Defense

To counter magnesium’s natural reactivity, we applied Micro-arc Oxidation (MAO). This ceramic-like coating provided over 720 hours of salt spray resistance, making the “ultra-light” drone durable enough for harsh coastal environments.

Performance Audit: Aluminum vs. Magnesium

If your project is hitting a “weight wall,” material conversion is the most effective lever you can pull. By combining lightweight AZ91D alloy with high-precision die casting and MAO coating, we help you achieve flight-ready or road-ready performance at a fraction of the weight.

Hit Your Target Weight Today

Unsure if magnesium is right for your structural components? Our engineering team provides full Aluminum-to-Magnesium DFM feasibility reports. Request a Lightweighting Review

FAQ

How much lighter is magnesium compared to aluminum in die casting? Magnesium is approximately 33% lighter than aluminum. In our recent structural frame case studies, converting from aluminum to magnesium achieved a full 33% weight reduction while maintaining identical structural rigidity and performance. How do you protect magnesium castings from corrosion? We utilize Micro-arc Oxidation (MAO) to create a ceramic-like protective layer on the magnesium surface. This advanced finishing process provides over 720 hours of salt spray resistance, meeting strict ASTM B117 environmental standards.