Zirconia Ceramic Plunger

Zirconia Ceramic Plunger (ZCP) Our Zirconia Ceramic Plunger (ZCP) behave reliable joint and more intensity than other ceramic plunger s because it use mechanically joined and simultaneously the mastic for sticking ceramics and metal handle. All working part are zirconia ceramics. Our ZCP’s service life will be more 10 times than metal plunger which it have been widely used in Petroleum, Chemical, Food Machinery ram pumps and so on.   Material Properties
Composition Wt% 94.8%ZrO2,5.2%Y2O3
Specific Density g/cm3 ≥6.0
Hardness (HV) Kg/mm2 ≥1250
Bending Strength MPa 1150
Fracture Toughness MPa.m1/2 ≥9
Grain Size μm <0.5
Elastic Modules GPa 200
Thermal Conductivity W/(m.K) 3
Thermal Expansion Coefficient (20-400℃) ×10-6m/℃(20-400℃) 9.6