CNC Machining Materials
Processes
Lead Time
Finishing Options
Tolerance
Magnesium, a common material for die casting, is increasingly popular for CNC machining becaust it is lightweight and highly machinable in terms of feed rates. Machined magnesium also produces excellent surface finishes due to shorter chips being produced during the machining process. Fictiv offers multiple Magnesium alloys: AZ91D, AZ61B, and AZ31B. Each has slightly different properties, but AZ91D is the most commonly used in die casting and CNC machining.
AZ91D Magnesium
Yield Strength (tensile)
Elongation at Break
Hardness
Density
AZ61B Magnesium
Yield Strength (tensile)
Elongation at Break
Hardness
Density
AZ31B Magnesium
Yield Strength (tensile)
Elongation at Break
Hardness
Density
Magnesium is very similar to most grades of aluminum in terms of overall appearance. Magnesium can be media blasted or tumbled to achieve a multitude of surface finishes. Additionally, powder coating can be applied to achieve more matte/glossy colors.
Min Wall Thickness
Min End Mill Size
Min Drill Size
Max Part Size
Undercuts
Radii : Depth
Cost Saving Tip
To reduce costs, limit the number of part setups, the number of inspection dimensions or tight tolerances, and deep pockets with small radii.
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