Tungsten WK & Pure Tungsten Rod

T&D Materials manufactures and supplies premium quality pure Tungsten and WK (Potassium doped) Tungsten rod.

Tungsten’s unique properties as a high-performance material make it of value in a variety of high temperature products and processes. It has a melting point of 3410° C, low vapor pressure at elevated temperatures and low coefficient of thermal expansion. Among them are glass-to-metal seal parts and support parts for lighting and electronics, Silicon rectifier stud mounts and high temperature furnace components.

T&D produces pure and Potassium doped (WK Type) Tungsten rod. The Potassium doped products are targeted for use where high temperature non-sag properties are required in smaller cross sections by the lighting and electronic industries.


Tungsten rod is manufactured as random length pieces or cut to customers’ desired lengths in diameters ranging from .020 inches to .750 inches. Standard diameter and length tolerances are listed in the accompanying tables. Other, closer tolerances can be quoted on request. In addition, there are three different surface processes or finishes which are provided, depending upon the desired end use.

Surface Finishes

  • Black Surface is “as swaged” or “as drawn”; retaining a coating of processing lubricants and oxides.
  • Cleaned Surface is chemically cleaned to remove all lubricants and oxides.
  • Ground Surface is centerless ground to remove all coating and to achieve precise diameter control.

Custom fabrication is available upon customer request.

“Excellence Through Precision”

T&D Materials works relentlessly to ensure expectation-exceeding service through controlling our process end-to-end from the refining of raw materials to the highest level of purity, to delivering your completed, impeccably machined, finished goods.