MicroMécanique outillage en carbure de tungstène

Tungsten carbide machining

Over 80 years, MicroMécanique has forged unique expertise in tungsten carbide machining. This exceptionally hard material requires expert machining skills and specific state-of-the-art machinery. Our engaged, diligent staff produce micromechanical tools and parts with micron-level precision, capable of withstanding the most demanding industrial environments.

 

Tungsten carbide (chemical symbol WC) is a compound of carbon and tungsten. Tungsten has the highest melting point (3,422°C) of all metals, the lowest vapour pressure, and the greatest tensile strength at a temperature above 1,650°C. Derived from the old Swedish name for ‘heavy stone’, tungsten is mainly used in the engineering industry, mostly in compounds or alloys like tungsten carbide. Tungsten carbide parts are hard enough to withstand the many stresses of intensive production environments and must be machined with ceramic or diamond tools. Parts made from WC have a high compression strength and good wear and oxidation resistance at high temperatures. Our customers appreciate the quality of the tools we produce, as they last much longer than treated steel parts.

Properties of tungsten carbide

  • Extreme resistance to wear and abrasion.
  • Dimensional stability: very little thermal expansion.
  • High compression and tensile strength.
  • Optimal behaviour under harsh conditions (high temperature, corrosion).
  • Extends the lifespan of tools and components.

Tungsten carbide grades

Coarse grain grade, 6 to 12 µm

Grades

G1/K20G2/K30G3/K40G4/K50G5/K60G6/K70
% tungsten92-93,587-9083-858074-7872-75
% cobalt6-79-12152020-2525-26

Vickers HV-50

1500-16001300-14001150-1250950-1100850-1000800-850

Bending strength (N/mm²)

2100-25002400/29002500-33002800-32002800-34002700-3400
Compression strength (N/mm²)5500-60005000/52004000-42003600-39003300-35003100-3300

Grain grade, 1 to 4 µm

GradesK01K05K10K15K20K30
% tungsten92-9690-9491-9393,592-9488
% cobalt3-54-65-666-710

Vickers HV-50

1700-19001700-18001600-180017001300-15501350-1450

Bending strength (N/mm²)

1800-22001600-20001700-220018502000/21502200-2700
Compression strength (N/mm²)6600-68005800/63006000/620061005500/63005200-5500

Micrograin grade <1 µm

GradesK01K05K10K20K30
% tungsten96-9794-9794-9590-9388-92
% cobalt3-43-65-67-108-12

Vickers HV-50

1900-20001850-205018501650-18001500-1700

Bending strength (N/mm²)

2000-22002000-30002200-33003100-40002900-3700
Compression strength (N/mm²)6500-68006200-64006300-64006000-63005800-6000

Examples of products and applications

  • Forming dies
  • Extrusion dies
  • Connection cones
  • Clamping jaws
  • Punches and dies
  • Wear parts for all sectors (watchmaking, aeronautics, defence, nuclear power, automotive industry, etc.)
  • Micron-scale fixtures and assemblies for all sectors

Machining techniques used at MicroMécanique

  • Wire and spark EDM (up to Ø 0.10 mm)
  • ROEDERS 5-axis high-speed machining with robotics
  • Surface and cylindrical grinding
  • High-precision CNC turning and milling
  • Manual and mechanical polishing and tribofinishing for surface finishes Ra <0.01
  • Brazing, shrink fitting and bonding of multiple materials
  • Laser marking and engraving for traceability

Would you like to work with tungsten carbide?
Discover its applications

  • Aeronautics and space: wear components, guiding systems, engine parts.
  • Automotive and industrial sectors: dies, wear plates, needles, pistons.
  • Nuclear power and energy: pump parts, shafts, bearings.
  • Defence: specific tools and components subject to heavy wear.
  • Medical industry: specialised tools and components.
  • Watchmaking and luxury goods: micron-scale fixtures, precision tooling.
  • Agrifood: guide systems, knives, durable wear parts.