Zirconia

Zirconia is often used in wear applications requiring improved fracture toughness and stiffness over alumina. Its high material cost usually warrants its usage only where alumina fails.

Property	ASTM Method	Units	MSZ-200	Y-TZP

Color	-	-	ivory	ivory
Gas Permeability	-	-	gas tight	gas tight

Density	C 20-97	g/cc	5.72	6.00
Hardness	-	Mohs Scale	8	8
Water Absorption	C 20-97	%	0	0
Flexural Strength	F 417-87	psi	85,000	115,000
Tensile Strength	-	psi	42,000	57,000
Compressive Strength	-	psi	400,000	425,000
Elastic Modulus	C 848	psi x 10⁶	30	30
Shear Modulus	C 848	psi x 10⁶	12	11
Poisson's Ratio	C 848	none	0.28	0.36

C.T.E., 25 - 100°C	C372-96	X10^-6/°C	8.9	6.9
C.T.E., 25 - 300°C	-	-	9.7	8.1
C.T.E., 25 - 600°C	-	-	10.0	8.7
Thermal Conductivity, 25°C	C 408	W/m-K	3	3
Max Use Temperature (Non-Loading)	-	^°F	2200	930
Max Use Temperature (Non-Loading)	-	^°C	1200	500

Dielectric Strength (.125" thick)	D149-97A	V/mil	375	250
Dielectric Constant @ 1MHz	D150-98	-	22.7	28.3
Dielectric Constant	D2520-95	-	29.2	n/a
@GHz	D2520-95	-	@6.2	n/a
Dielectric Loss @ 1MHz	D150-98	-	0.0016	0.002
Dielectric Loss	D2520-95	-	0.0018	n/a
@GHz	D2520-95	-	@6.2	n/a
Volume Resistivity, 25°C	D 257	ohms-cm	>1E + 14	>1E + 13
Volume Resistivity, 300°C	-	-	5E + 07	n/a
Volume Resistivity, 700°C	-	-	2E + 06	<1E + 4
NOTE: The information in this data sheet is for design guidance only. STC does not warrant this data as absolute values. Forming methods and specific geometry could affect properties. Slight adjustments can be made to some of the properties to accommodate specific customer requirements. Most of the dense materials in the table are resistant to mechanical erosion and chemical attack. STC has performed ASTM testing qualification for certain compositions, in accordance with ASTM D2442. Please consult our technical staff for appropriate material and specific test results. Note: In addition to the above compositions, STC offers a wide range of alternative materials. Please contact one of our applications engineers for material requirements that may not be shown above.

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