Alumina	Zirconia	Zirconia Toughened Alumina (ZTA)	Steatite
Mullite	Cordierite	Grade "A" Lava

Zirconia

Zirconia	Designation	Dense Y-TZP	Dense C-TZP

Color		Cream/White	Yellow-Cream
Hardness	Mohs	8	8
Water Absorption	%	Impervious	Impervious
Specific Gravity		6.02	6.15
Crystal Size	Micron	< 1.0	0.5-1.5

Flexural Strength	PSI	130,000	120,000

Maximum Operating Temperature Under Non Loading Conditions	°C	1480	1400
	°F	2700	2550

Linear Coefficient Of Thermal Expansion:	(@25°C - 100°C) X10^-6/°C	10.6	11.9
Linear Coefficient Of Thermal Expansion:	(@25°C - 600°C) X10^-6/°C	12.4	13.9

NOTE: THE INFORMATION IN THIS DATA SHEET IS FOR DESIGN GUIDANCE ONLY. STC DOES NOT WARRANTY 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 AND MIL-I-10B QUALIFICATION FOR CERTAIN COMPOSITIONS. PLEASE CONTACT OUR TECHNICAL STAFF FOR APPROPRIATE MATERIAL AND SPECIFIC TEST RESULTS.

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