Because ot its hexagonal close-packed structure, magnesium is difficult to shape at room temperature. Epoxide coating commonly used for corrosion resistance. Alloys are available in bar, sheet, tube and extruded forms. Soldering is not reccomended. Other joining methods include riveting and adhesive bonding.
Magnesium alloys are readily machinable and very high cutting speeds are permissible.
Dry machining is preferred, usually compressed air cooling if necessary. Proper precautions should be taken during machining and welding. Can case a reduction in fatigue strength. Increases strength and improves workability of wrought alloys. But limits weldability.