99.8% Alumina High temperature resistant alumina ceramic hotplate heating plate

Very good electrical insulation.
Moderate to extremely high mechanical strength.
Very high compressive strength.
High hardness.
Moderate thermal conductivity.
High corrosion and wear resistance.
Good gliding properties.
Low density.
Operating temperature without mechanical load 1,000 to 1,700°C.
Bioinert and food compatible.

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Model:
01067
Brand:
HaoRui
Code:
custom01001

Product Description

99 Alumina Ceramic Custom Finishing

High temperature resistant alumina ceramic hotplate heating plate

Aluminium oxide ceramic is the best known and most commonly used fine ceramic material. It has the same sintered crystals as sapphire and ruby. Alumina ceramics is a ceramic material based on aluminium oxide (Al2O3). As alumina ceramics have a series of advantages such as high temperature resistance, corrosion resistance, abrasion resistance and high hardness, they can be used in harsh working environments as an alternative to metallic materials and organic polymer materials.

As an indispensable and important material, it has a broad application prospect in the fields of energy, aerospace, machinery, automobile, electronics and chemistry. These alumina ceramics are made into ceramic heating parts, alumina ceramic rods, ceramic shafts for pumps, ceramic seals for water pumps.

This ceramic has AL2O3 as the main component (AL2O3 mass fraction >45%). According to the content of AL2O3, it can be divided into 75% alumina ceramics, 95% alumina ceramics and 99% alumina ceramics.

Properties of Alumina material (Al2O3)

Property	Item	95% Al2O3	99% Al2O3	99.8%Al2O3	Unit
Mechanical Characteristics	Color	White	light yellow	Ivory
	Bulk Density	3.7	3.85	3.93	g/cm³
	Water Absorption	0	0	0	%
	Bending Strength	300	310	370	MPa
	Compressive Trength	2,300	2,400	2500	MPa
	Elastic Modulus	320	340	390	GPa
	Fracture Toughness	3~4	3~4	4	MPa m^1/2
	Weber Coefficient	12	12	12	m
	Vickers Hardness	1,400	1,600	1850	HV 0.5
Thermal Characterics	Coefficient of Line Thermal Expansion	7~8	7~8	7~8	10^-6 K^-1
	Thermal Conductivity	20	29	32	W/mK
	Thermal Shock Resistance (Put in Water)	250	200	280	ΔT °C
	Max Working Temperature	1,500	1,600	1700	°C
Electrical Characteristics	Volume Resistance At 20°C	>10¹⁴	>10¹⁴	>10¹⁴	Ωcm
	Dielectric Strength	15×10⁶	15×10⁶	15×10⁶	V/m
	Dielectric Constant	9	10	10	εr
	One MHZ Dielectric Loss Angle at 20°C	0.0004	0.0002	0.0001	tanδ
Chemical Characteristics	Nitric Acid (60%) 90°C	0.1	0.1	0.05	24H WT Loss mg/cm²
	Sulphuric Acid (95%) 95°C	0.3	0.34	0.22
	Caustic Soda (30%) 80°C	0.9	0.95	0.04