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Established in 1998, China Ningbo LIHE INC. is a professional manufacturer and exporter of all kinds magnets, tungsten carbide and mechanical seals, dedicated to satisfying customers by providing wide range magnetic products and relative services. Through years of endeavors, the company has already become a leading manufacturer in magnets, tungsten carbides and mechanical seals.
tungsten carbide tungsten carbides


  Tungsten Carbide
 
Tungsten Carbide is the most excellent seal face material in the seal material world.
It has High-polished, Great wear-resistance, extremely high toughness and corrosion-resistance. Lihe can provide Tungsten Carbide ( cobalt bonded ) and Tungsten Carbide ( nickel bonded ). All the rings which outer diameter from 8mm to 400mm is doable.


The performance index of Tungsten caribde
Item   Value
Hardness   HV3 1100-1400
Density   Kg/m3 14600-14900
Bending Strength   Mpa 2400-2600
Compression Strength   Mpa 4100-4300
Modulus of Elasticity   Gpa 560-5803
Thermal Conductivity   W/mk 75-110
Coefficient of Heat Expansion   K-1 5.6-5.8.10-6
Poisson Ratio     0.20
Specific Heat Capacity   J/kg.k 200
Electrical Resistance   Oum M 0.16-0.19
Grain Sizem (normal)   µ(normal) 1-5



mechanical seal




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