Heavy tungsten alloys

Aerospace

Semiconductors

Chemical Industry

Catalog

Available shades

Select a grade to view its complete technical data sheet: chemical composition, mechanical properties, and available shapes and dimensions.

WNiFe – Class 1

Tungsten Alloy

ASTM B777

WNiFe – Class 2

Tungsten Alloy

ASTM B777

WNiFe – Class 3

Tungsten Alloy

ASTM B777

WNiFe – Class 4

Tungsten Alloy

ASTM B777

WNiCu – Class 1

Tungsten Alloy

ASTM B777

WNiCu – Class 2

Tungsten Alloy

ASTM B777

WNiCu – Class 3

Tungsten Alloy

ASTM B777

Concept Métal, your supplier of heavy tungsten alloys

Heavy tungsten alloys are sintered composite materials with very high density, combining tungsten with nickel, iron, or copper. Their exceptional density (between 17 and 18.5 g/cm³) makes them the materials of choice wherever high mass density is a key requirement.

What is a heavy tungsten alloy?

A heavy tungsten alloy is a sintered material composed of 90 to 97 percent tungsten, bonded by a nickel-iron (W-Ni-Fe) or nickel-copper (W-Ni-Cu) matrix phase. This powder metallurgy manufacturing process produces a dense, machinable material with controlled mechanical properties.

These alloys offer several advantages:

a very high density (17 to 18.5 g/cm³)
good machinability despite its density
mechanical strength and ductility superior to those of pure tungsten
excellent radiation absorption capacity

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The Properties of Heavy Alloys

Density
With densities close to that of pure tungsten but much better machinability, these alloys allow for the concentration of maximum mass within a small volume.

Radiation Absorption
Tungsten’s high density gives these alloys excellent shielding capabilities against X-rays and gamma rays, superior to that of lead at the same thickness.

Machinability
Unlike pure tungsten, heavy alloys can be machined on conventional machine tools, which facilitates the manufacture of parts with complex geometries.