As a primary manufacturer of Copper & Silver Tungsten discs, bars, rings, rods & special shapes, Sherbrooke Metals offers the highest degree of metallurgical uniformity for even the most demanding job. Sheralloy & Shercut tungsten electrodes serve resistance welding, EDM, ECM & electrical contact applications. We stock pure tungsten rod & plate for expedited delivery. 3-Day Turnaround on Specials.