Ceramic Properties - Zirconia (TZP)
Zirconia ceramic parts have a martensite-type transformation mechanism of stress induction, giving the ability to absorb great amounts of stress relative to other ceramic materials. It exhibits the highest mechanical strength and toughness at room temperature. Zirconia has excellent wear, chemical and corrosion resistance and low thermal conductivity.
Common applications include extrusion dies, wire and pipe extension, guide and other wear rollers, pressure valves, and bearing materials.
Properties Units Test Value Physical Chemical Formula ZrO2 Density, r g/cm3 ASTM C20 6.04 Color white Crystal Structure tetragonal Water Absorption % @R.T. ASTM C373 0.0 Hardness Moh's 6.5 Hardness knoop (kg/mm2) Knoop 100g 1600 Mechanical Compressive Strength MPa @ R.T. ASTM C773 2500 Tensile Strength MPa @ R.T. ACMA Test #4 248 Modulus of Elasticity
GPa ASTM C848 207 Flexural Strength (MOR) MPa @ R.T. ASTM F417 900 Poisson's Ratio, u ASTM C818 0.32 Fracture Toughness, KIc MPa x m1/2 Notched Beam Test 13.0 Thermal Max. Use Temperature
(* denotes inert atm.)
C No load cond. 500 Thermal Shock Resistance DT (C) Quenching 280 - 360 Thermal Conductivity W/m-K @ R.T. ASTM C408 2.7 Coefficient of Linear Thermal Expansion, al mm/m-C (~25C through 1000C) ASTM C372 11.0 Specific Heat, cp cal/g-C @ R.T. ASTM C351 0.10 Electrical Dielectric Constant 1MHz @ R.T. ASTM D150 26 @100kHz Dielectric Strength kV/mm ASTM D116 9.0 Electrical Resistivity Wcm @ R.T. ASTM D1829 >1013
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