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Insulating Ceramic Bolt 99% Alumina Screws and Alumina Ceramic Nut

In high-temperature, corrosive, or electrically sensitive environments, traditional metal fasteners often fall short. This is where Alumina Screws and Ceramic Nuts excel. Made from 99% pure alumina (Al₂O₃), these insulating ceramic bolts and Alumina Ceramic nuts offer exceptional durability, electrical insulation, and resistance to extreme conditions.

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Product Introduction

Key Benefits of Alumina Screws & Ceramic Nuts

1、High-Temperature Resistance – Withstanding temperatures up to 1600°C, these fasteners are ideal for furnaces, semiconductor equipment, and aerospace applications.

2、Electrical Insulation – Unlike metal fasteners, alumina ceramic components prevent electrical conductivity, making them perfect for high-voltage and electronic applications.

3、Corrosion & Wear Resistance – Resistant to acids, alkalis, and abrasive environments, ensuring long-term reliability in harsh conditions.

4、Lightweight & Non-Magnetic – Suitable for sensitive industries like medical imaging and precision instrumentation.

Insulating Ceramic Bolt 99% Alumina Screws and Alumina Ceramic Nut

Applications

*Semiconductor manufacturing

*High-temperature industrial furnaces

*Power transmission systems

*Chemical processing equipment

Whether you need Alumina Screws for electrical isolation or a Ceramic Nut for thermal stability, 99% alumina ceramic fasteners provide unmatched performance in demanding settings. Upgrade to ceramic solutions for superior insulation and longevity!

﹡Production process

1. Grind and crush the raw materials to be slurry or powder

2. se-different method to making the slurry or powder into semi-finished products

3. Put the semi-finished products into the kiln for dewaxing and sintering;

4. After forming and sintering, Ceramic Sleeves products can also be processed by subsequent CNC precision machining according to the drawing requirements. Then Q/C test.

5. Finally package Ceramic Sleeves by bubble paper or cartons and place it on tray for delivery

95 alumina substrate

﹡Certifications

95 alumina substrate

﹡Company

High Wear Resistance Zirconia Ceramic Tube ZrO2 Ceramic Pipe

Yixing Shengda Refractory Ceramic Co, Ltd. was established in Yixing City, China in 1995, witha production area of over 10,000m2. lt is an enterprise specializing in the production of aluminaceramic,zirconia ceramic,slicon nitride, silicon carbide and other precision ceramic products.

And we also produce ceramic band heaters, ceramic terminal block, cordierite and mullite ceramic parts an other ceramic products.

﹡Ceramic Properties

Properties	Units	Cordierite Ceramic	Mullite Ceramic	95%Alumina Ceramic	99%Alumina Ceramic	99.5%Alumina Ceramic	99.7%Alumina Ceramic	Silicon Nitride	Zirconia Ceramic
Colour		Yellow	White	White	Light yellow	Light yellow	Light yellow	Black	White
Density	g/cm3	1.9	2.6	3.6	3.8	3.8	3.9	3.2	6
Flexural Strength	Mpa	30	120	300	350	375	375	800	1100
Compressive Strength	MPa	350	500	2500	2800	2800	2554	2600	3000
Modulus of Elasicity(20℃）	Gpa	40	100	300	350	350	357	290	320
Max Use Temperature	°C	1200	1300	1400	1500	1500	1760	1300	1050
Thermal Condutivity	W(m.K)	1.3-1.8	2~6	20	30	30	33-38	25	3
Thermal Expansion Cofficient	10-6/°C	2.5-3	2.5-3	7.5	8	8.2	8.2	3	10
Thermal Shock Resistance	△T℃	300	150	140	150	200	223	600	250
Dielectric Strength	KV/mm	-	-	15	18	18	23.4	14	15
Dielectric Constant	Er	8	8	9	9.2	9.2	9.84	9	26

High Temperature Alumina Ceramic Block Ring