High Temperature Insulation 99% Alumina Ceramic Core for Furnace

• Application: Electronics, Refractory, Industrial Ceramic
• Type: Ceramic Tube
• Product Name: Alumina Ceramic Core
• Features: High Electrical Insulation
• Grade of Material: 96%, 99%, 99.5% Alumina
• Forming Method: Dry Pressed, ISO Pressed, Hot Pressed
• Model NO.: Standard
• Density: Over 3.65g/cm3
• Secondary Process: Fine Grinding, CNC Machining
• Surface Treatment: Polishing, Glazing, Metalizing
• Certificate: RoHS, Reach, ISO9001
• Material: Alumina Ceramic
• Transport Package: Individual Packaging
• Specification: Max. 800mm mmx 1000mm x 30mm
• Trademark: JingHui
• Origin: China
• HS Code: 8547100000
• Production Capacity: 500000PCS/Month

Product Description

High Temperature Insulation 99% Alumina Ceramic Core for Furnace
 

Product Introduction

With our machining and manufacturing capabilities, Jinghui Ceramics can offer a wide range of standard and customized alumina ceramic insulator tubes. They are regularly made from high-purity aluminum oxides such as 95%, 99%, 99.5%, and 99.8% depending on the applications in the different fields. To cater to the precise fitting relationship, some secondary processes have to be conducted at home, including fine grinding, drilling, tapping, and CNC machining. Therefore, we can meet various technical specifications and grades of ceramic tubes in the market to meet customers' demanding needs. 

Aluminum oxide (Alumina) has an extensive application due to its versatility and low cost of material than other advanced ceramics. Alumina offers high electrical insulation resistance, high-temperature resistance, strong hardness, wear resistance, and good chemical stability. This makes it an ideal material choice for applications requiring high temperature and corrosion resistance.

 

The specification

 

Option Materials	various purities of alumina from 40% to 99.8% and steatite ceramic
Outer diameter	0.5 ~800 mm
Length	1~1000mm
Roughness	To be Ra0.1
Surface treatment	Polished, Glazed, Metalized availability
Cosmetic	Smooth surface without no contamination, deformation, and crack

 

Products category

 

         Alumina Standoff Insulator                    Alumina Ceramic Spacer Insulator          Alumina Ceramic Washer Insulator
 
   Customized alumina insulators                Custom alumina ceramic insulators          Customized alumina insulator tube
 

Technical Datasheet

Datasheet of technical ceramic materials

Property	Units	Materials
		99.5%Al2O3	99%Al2O3	95%Al2O3
Density	g/cm^3	≥3.85	≥3.80	≥3.60
Water absorption	%	0	0	0
Hardness	HV	1700	1700	1500
Flexural strength	Mpa	≥379	≥338	≥320
Compressive strength	Mpa	≥2240	≥2240	≥2000
Fracture toughness	Mpa m^1/2	4-5	4-5	3-4
Max. service temperature (Non-loading)	ºC	1675	1600	1500
CTE (20-800ºC)	1×10 ^-6 /ºC	6.5~8.0	6.2~8.0	5.0~8.0
Thermal shock	T(ºC)	≥250	≥200	≥220
Thermal conductivity(25ºC)	W/m.k	30	29	24
Volume resistivity (25ºC )	ohm. cm	>1 x 10^14	>1 x 10^14	>1 x 10^14
Insulation strength	KV/mm	19	18	18
Dielectric constant(1Mhz)	(E)	9.7	9.5	9.5

Why choose us?

1. Comprehensive shaping methods from small-sizes to large sizes, from simple configuration to complex shapes

 2. Scientific & rigorous quality-control system and high-precision inspection equipment
 

 

Certifications

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If you are searching for high alumina ceramic insulator tubes, please call us or email us today. We do believe you will find an amazing solution hereby.