Ceramic grinder for coffee/pepper grinder

Ceramic grinder for coffee/pepper grinder Material:95-97%Al2O3 Characteristics: wear-resisting performance is good

Ceramic grinder for coffee/pepper grinderMaterial:95-97%Al2O3Characteristics:wear-resisting performance is good

This hexa ceramic grinder used on the coffee/pepper grinder,which has  good corrosion resistance, high operating temperature, good mechanical characteristics,  high wear resistance, high hardness, high thermal shock resistance.

They enjoy popularity among our customers in America and Germany,and the customers make enquires ceaseless.

We can make any ceramics accroding to your requirements(drawings or samples)!

Name	Unit	Slim
Material		Al2O3 95%-97%	Al2O3 99%	Al2O3 99.7%
Desity	g/cm3	3.7	3.85	3.9
Flexural Strength	Mpa	300	340	390
Compressive Strength	Mpa	3400	3600	3900
Modulus of Elaslicity	Gpa	350	380	390
Impact  Resistance	Mpa m1/2	4.0	5	5.2
Weibull Moudulus	m	10.0	10	12
Vickers  Hardness	HV0.5	1800.0	1900	2000
Thermal Expansion Coefficent	10-6K-1	5.0-8.3	5.4-8.3	5.5-8.4
Thermal Conductivity	W/mK	24	27	28
Thermal Shork Resistance	T°C	250	270	280
Maximum Use Temperature	°C	1600	1650	1700
Volume Resistivity at 20°C	Ω	≥1014	≥1014	≥1015
Dielectric Constant	KV/mm	20	25	30
Open Porosity	%	0	0	0
Dielectric Constant	ξr	10	10	10
Dielectric Loss Angle	Tanσ	0.001	0.001	0.0005

Ceramic grinder for coffee/pepper grinder