W Ring

Parameters

Grade W1
Heat resistance 3400℃
Density 19.2 g/m3
Certificate ISO9001
Application Mechanical seals, pumps, valve
Size OEM
Feature Superior wear,Corrosion resistance
Customized Available
Standard or Nonstandard Nonstandard

Advantages:

1.Excellent abrasion resistance 

2.High wear resistance

3.High fractural strength

4.High thermal conductivity

5.Small heat expansion co-efficient

 

Specification

Atomic number 74
CAS number 7440-33-7
Atomic mass 183.84 [g/mol]
Melting point 3420 °C
Boiling point 5555 °C
Density at 20 °C 19.25 [g/cm3]
Crystal structure Body-centered cubic
Coefficient of linear thermal expansion at 20 °C 4.4 × 10-6 [m/(mK)]
Thermal conductivity at 20 °C 164 [W/(mK)]
Specific heat at 20 °C 0.13 [J/(gK)]
Electrical conductivity at 20 °C 18.2 × 106 [S/m]
Specific electrical resistance at 20 °C 0.055 [(Ωmm2)/m]

Quality&Inspection

Applications

1.  widely used in semiconductor, chemical vapor deposition (CVD) and physical vapor deposition (PVD) display and optical applications;

2.  applied in producing electrodes, heating elements, heat shields, sintering trays, sintering boats, stacking sheets, base plates, sputtering targets, crucibles in electronic and vacuum applications.

3.  can be used as contacts in vehicle motors.

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