Alumina al2o3 ceramic disc valve for brass cartridge manufacturers From China XTL

항목	Test Condition	Unit Symbol	95% Alumina Ceramics	99% Alumina Ceramics	99.7% Alumina Ceramics
굽힘 강도	20° C	MPa (psi x 103)	358(52)	550
Compressive Strength	20° C	MPa (psi x 103)	2068 (300)	2600(377)
Fracture Toughness	K(I c)	Mpa m1/2	4.5	5.6	6
Coefficient of thermal expansion	25-1000° C	1X 10-6/°C	7.6	7.9	8.2
Coefficient of thermal conductivity	20° C	W/m °K	16	30	30.4
Thermal Shock Resistance	Tc	°C	250	200
Dielectricity constant	1MHz.25°C	/	9	9.7
Dielectric strength	/	ac-kV/mm (ac V/mil)	8.3 (210)	8.7 (220)
Volume Resistivity	100°C	ohm-cm	> 1013	> 1014	> 1014

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