Buy tungsten heavy metal (DensM)
High-density tungsten heavy alloys for balancing, radiation shielding and vibration damping.
Tungsten heavy metals (DensM) are sintered alloys with very high density. They are used for balancing weights, radiation shielding, vibration damping and applications where a lot of mass is needed in a small space. Machinable and easy to work. Common grades are W90NiFe and W92.5NiFe (in stock as DensM 170 and DensM 175); higher densities such as W95NiFe and W97NiFe (DensM 180 and DensM 185) and the non-magnetic WNiCu variant are available on request. Our DensM grades are named by density (DensM170, DensM175, DensM180, DensM185); in the market, tungsten heavy metals of this class are also sold under trade names such as Densimet® or Triamet®.
Tungsten heavy alloy grades (WNiFe / WNiCu)
Frequently asked questions about tungsten heavy metal
Which tungsten heavy alloy grades does Molytun offer?
We supply the common WNiFe grades to ASTM B777: W90NiFe (approx. 90 % tungsten, ~17.0 g/cm³) and W92.5NiFe (approx. 92.5 % W, ~17.5 g/cm³) from stock as DensM 170 and DensM 175. Higher densities such as W95NiFe (~18.0 g/cm³) and W97NiFe (~18.5 g/cm³) and the non-magnetic WNiCu variant (e.g. W90NiCu) are available on request.
What is the difference between WNiFe and WNiCu?
WNiFe (nickel-iron matrix) is mechanically stronger and more economical, but magnetic. WNiCu (nickel-copper matrix) is non-magnetic and therefore the right choice when magnetism interferes — e.g. in measurement and sensor technology. Both reach comparable densities.
Why tungsten heavy metal instead of lead?
DensM is significantly denser than lead, non-toxic and machinable — ideal where maximum mass or shielding is required in a small space.
Can DensM be machined?
Yes, tungsten heavy metal can be machined (turning, milling, drilling).
Which DensM grade corresponds to Densimet® or Triamet®?
Densimet® (Plansee) and Triamet® (Wolfram Industrie) are trade names for tungsten heavy metals of the same material class (WNiFe or WNiCu to ASTM B777). Ordered by density: DensM175 sits in the class of Densimet® D176 / Densimet 176 (≈ 17.6 g/cm³), while DensM180 and DensM185 cover the higher densities. These brands belong to their respective owners; we supply equivalent WNiFe/WNiCu materials to ASTM B777.