Tungsten's unique properties, including a melting point of 3410.

Tungsten Rod

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

Sifon produces pure and potassium doped (WK Type) tungsten rod. The potassium doped products is targeted for use where high temperature non-sag properties are required in smaller cross sections by the lighting and electronic industries.

Availability
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 Finish

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.