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Molybdenum & alloys

Molybdenum is a lustrous grey metal with a 2610°C melting point. The two main molybdenum ores are Molybdenite and Wulfenite. Like tungsten, molybdenum oxide is reduced to obtain pure molybdenum powder. The molybdenum powder is then sintered, or remelted under vacuum to make parts. Molybdenum associates a low coefficient of thermal expansion and a good thermal conductivity, interesting for its applications in the electronics, for instance when added with Copper to make heat sinks. Molybdenum also presents high electron emissivity and a high resistance versus molten metal, especially molten zinc.
  • Pure Molybdenum (99.95 %)
  • TZM: Mo + 0.40~0.55%Ti + 0.06-0.12%Zr + 0.01-0.04% C
  • TZC: Mo + 1.2% Ti + 0.3% Zr + 0.1% C
In form of rods, wire, plates, foils, tubes and machined pieces.

Rhenium & Alloys

Rhenium is quite a rare metal: its concentration is about 0.7 ppm in the earth's crust. It is the last naturally occuring element to be discovered (1925). Most rhenium today is produced as a by-product of the copper mining industry:
rhenium is found in those copper ores contaminated with molybdenum. When the copper is purified, the rhenium is extracted with the molybdenum in the form of sulfurous sludge. The by-product is then refined in order to produce high purity rhenium metal powder. It is then sintered to make parts.
The main properties of Rhenium are its high melting point (3180°C), its very high density (21,04 g/cm3), its high electrical resistivity, high electron emissivity and high chemical resistance versus molten metal. Rhenium has also good mechanical properties. Consequently, Rhenium is added to tungsten and molybdenum to increase their properties, especially electric resistance and ductility.
  • Pure Rhenium (99.99 %)
  • Re-50%Mo
In form of rods, wire, plates, foils and tubes.


Older references describe zirconium as being hard and brittle metal of relative unimportance. Modern developments, however, have shown that zirconium is soft and ductile. It has valuable properties which have given rise to a spectacular increase in production and an intensive study of the metal and its alloys. The reason for this great interest is the corrosion resistance to produce industry equipment and the low absorption capacity for thermal neutrons.
  • Zr 702 - UNS 60702
  • Zr 705 - UNS 60705
In form of rods, wire, plates, foils, tubes and machined pieces.

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Acal BFi France S.A.S. SIRET 392 078 192 00011. APE 4652 Z - R.C.S. Evry N° 1993 B 01624.