Thinwall, hot-chamber magnesium die casting was used for this Kodak camera housing. It provided exceptional built-in EMI/RFI shielding needed for the design. Magnesium makes it possible to create a thinner profile with the equivalent strength of heavier metals.
Casimir (Casey) Wisniowicz
Magnesium Die Casting Team Leader
Employed since 1984
If your project requires a lightweight die casting component with an excellent strength-to-weight ratio, magnesium die casting is the logical option. CWM die casts magnesium alloy AZ91D, a high-purity alloy which offers good corrosion resistance for your magnesium parts, as well as the following benefits:
Magnesium is a base material for numerous alloys. AZ91D is the most common magnesium alloy for die casting. It offers very good castability and toughness, and is an ideal material for light weight, highly durable parts.
Chicago White Metal uses hot-chamber die casting to produce die cast magnesium parts. In this process, the metal injection components are submerged in a reservoir of molten magnesium. A hydraulically-powered piston forces the magnesium into the die, taking advantage of magnesium’s excellent flow characteristics to accurately produce complex shapes.
Compared to steel, magnesium is 75% lighter with no significant loss of strength. It is a far better material for complex, thin-walled, net shape or near-net shape castings and offers greater dimensional stability. Magnesium castings can meet tight tolerances that would be difficult or impossible to achieve with steel. Tooling costs can be lower for magnesium castings, as multiple parts can be easily consolidated into a single component. This also improves component rigidity and reduces welding and assembly costs.
Compared to aluminum, magnesium is 33% lighter, with similar or improved mechanical properties, and machines easier. Magnesium provides greater corrosion resistance, and is better suited to large, thin-wall, net shape complex parts.
|Magnesium Die Casting||Primary Benefit of Mg||Secondary Benefit of Mg|
|vs. Steel Weldment||75% Lighter||Less Expensive|
|vs. Aluminium Die Casting||33% Lighter||Longer Tool Life|
|vs. Plastic Molding||Stronger, stiffer||Environmentally Stable|
Magnesium is stronger and stiffer than even the most advanced engineered plastics. It also provides greater wear resistance, higher temperature resistance, and better energy absorption/impact resistance characteristics.
Chicago White Metal was the first hot-chamber magnesium die casting company in North America and operates one of the largest, most advanced facilities for magnesium die casting. With 8 magnesium die casting machines from 200 to 650 tons of locking force, CWM can produce magnesium parts in a range of sizes from 0.75" x 0.75" to 18" x 18".