Why Use Tungsten as Replacement to Lead?
Lead's popularity is mainly due to its outstanding physical properties: high density, ease of casting and fabrication, and malleability.
Tungsten is a much suitable material for lead replacement applications. It has an even higher density than lead. However, due to its extremely high melting temperature, molding tungsten into a shape is complex and costly. Still, tungsten can be formed into solids through a process called sintering. This is where tungsten and other metal powders are pressed into shape and bound in a special furnace.
Another approach to using tungsten powder as a lead replacement is currently used by many companies that manufacture non-toxic thermoplastic composite materials. These materials are mostly used for injection molding processes contain a variety of polymers and fillers.
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