Why Use Tungsten Alloy Shielding?

Similar to lead (Pb), tungsten possesses a high density (19.25g/cc) and plizbility in its metal state. Where tungsten gains the advantage is in the ease of blending into plastic for extrusion or molding into custom shapes and sizes. Tungsten also differd from lead in that it is virtually non-reactive and is non-toxic. This eases handling requirements and minimizes issues associated with lead use such as long-term disposal and the potential characterization as a mixed hazardous waste.
Tungsten alloy also exists in sufficient, available quantities as to be a viable shielding material and, while more expensive than lead or steel, the cost differences are not prohibitive.

Tungsten Alloy Shielding Better than Lead Protection?-1

The most effective utilization of tungsten, in one of its many forms, will be achieved after evaluation of several key factors (space/environmental sonsiferations, long-term storage/disposal, and potential for multiple applications) on the prospective application. Though not cost-beneficial for "ordinary" shielding applications, when properly selected as the shielding material, dose avoidance exceeding that of lead will be achieved.