High temperature resistant multi-shape industrial ceramic alumina bolts and nuts

Overview of Alumina bolts and nuts

Alumina bolts and nuts are ceramic fasteners with aluminum oxide as the main component. The aluminum oxide material gives them many excellent properties, such as high hardness, wear resistance, corrosion resistance, good insulation and high-temperature resistance, and they can remain stable in harsh environments. They are often used in some special fields that require high material performance, such as aerospace, electronic equipment manufacturing and other industries, and can provide reliable guarantees for the connection of related equipment or components. Although the cost may be high, they play an important role in specific scenarios with their unique advantages.

Features of Alumina bolts and nuts

Alumina bolts and nuts have many excellent characteristics. Alumina bolts and nuts have excellent high-temperature resistance, are not easy to soften, deform or oxidize in high-temperature environments, and can be used continuously at high temperatures above 1500℃.

Alumina bolts and nuts have strong corrosion resistance, can resist the erosion of chemical substances such as acid, alkali, and salt, and can still maintain stable performance in harsh chemical environments.

Alumina bolts and nuts have excellent electrical insulation, can effectively isolate current, and can be used in high voltage, high frequency and other electrical environments to prevent arc flash or short circuit.

Alumina bolts and nuts also have high hardness and wear resistance. Their hardness far exceeds that of traditional metal materials, with a Mohs hardness of 9. They perform well in high-speed, high-load working environments and can reduce maintenance and replacement frequency. At the same time, alumina bolts and nuts have relatively low density and lightweight advantages, which help improve the fuel efficiency of equipment and reduce emissions.

Alumina bolts and nuts also have the characteristics of non-magnetic, environmentally friendly, high dimensional accuracy, and low surface roughness, which can meet various application scenarios with precise and special requirements.

Specifications table of Alumina bolts and nuts

Specification	Details	Other Information
Material	99.8% high-purity recrystallized alumina ceramic	High-purity alumina ceramics are the most common type, with the greatest balance of cost-effectiveness, mechanical, and thermal properties. Other alumina compositions are available upon request.
Color	White	–
Temperature Resistance	Up to 1650°C (3000°F)	Alumina ceramic bolts are among the most thermally resistant bolts available and are suitable for demanding high-temperature applications.
Corrosion Resistance	Excellent corrosion resistance to acids, solvents, salts, and organics	–
Electrical Insulation	Excellent electrical insulator	Non-conductive electrical properties make alumina ceramic bolts suitable for high-voltage applications.
Mechanical Properties	High hardness, good strength, and wear resistance	The hardness of alumina ceramics is second only to diamond, with a Mohs hardness of approximately 9.0. Their compressive strength is excellent, but their tensile strength and flexural strength are relatively low.
Thread Standards	Metric and imperial thread standards are available	–
Sizes	Available in various sizes, such as M4 (5mm length), M6, etc.	Custom dimensions can be requested.
Surface Treatment	Generally no special surface treatment required, as the ceramic material itself is corrosion-resistant and insulating	–
Applications	Widely used in high-temperature environments, such as kilns, smelting equipment, and chemical reactors; also used in high-voltage electrical equipment and corrosive environments	–
Standards	There are no unified international standards for alumina ceramic bolts and nuts. Specifications and dimensions are typically determined based on user requirements and the manufacturer’s standards	–

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Applications of Alumina bolts and nuts

Alumina bolts and nuts have many excellent properties and are widely used in many fields.

In the aerospace field, alumina bolts and nuts can be used for the insulation and fixation of electronic equipment in aircraft and spacecraft, such as aviation instruments, communication systems, navigation equipment, etc., to prevent current leakage and short circuits and ensure the normal operation of electronic equipment; at the same time, in high-temperature components such as aircraft engines and rocket engines, alumina bolts and nuts can withstand high-temperature environments and ensure that key parts are tightly connected.

In the field of electronics and electrical, alumina bolts and nuts are often used for fixing insulators in high-voltage power equipment, substations, and power transmission and distribution systems, connecting high-voltage cable terminals, and fixing circuit boards, brackets, housings and other components in electronic equipment manufacturing, providing electrical insulation performance, avoiding short circuits and interference of electronic components, and ensuring the stability and durability of equipment structures.

In the chemical industry, alumina bolts and nuts are suitable for connecting equipment such as pipelines, valves, reactors, etc., in strong acid, strong alkali, high temperature, and high-pressure environments in chemical production, as well as fastening chemical reaction devices at high temperature and high pressure. They are corrosion-resistant and can maintain stable performance under extreme conditions, extending the service life of equipment.

In the automotive field, alumina bolts and nuts are used to fix automotive engine parts, such as cylinder heads, exhaust pipes, turbochargers, etc., to improve connection reliability and durability; in high-voltage parts of new energy vehicles, such as high-voltage battery packs, motor controllers, charging systems, etc., to ensure the safe transmission and isolation of high-voltage electricity.

In the field of medical equipment, alumina bolts and nuts are used to fix medical equipment parts such as X-ray machines, CT scanners, and magnetic resonance imaging devices, as well as connecting parts or auxiliary parts of dental and orthopedic implants. They are biocompatible, non-magnetic and corrosion-resistant.

In addition, alumina bolts and nuts are also used in mechanical manufacturing, communications, shipbuilding, food processing and other fields, such as fixing mechanical parts, installing communication base station equipment, connecting ship equipment, installing food processing equipment, etc., to meet the special needs of different fields.

Company Profile

RBOSCHCO is a trusted global chemical material supplier & manufacturer with over 12 years of experience in providing super high-quality chemicals and Nanomaterials. The company exports to many countries, such as the USA, Canada, Europe, UAE, South Africa, Tanzania, Kenya, Egypt, Nigeria, Cameroon, Uganda, Turkey, Mexico, Azerbaijan, Belgium, Cyprus, Czech Republic, Brazil, Chile, Argentina, Dubai, Japan, Korea, Vietnam, Thailand, Malaysia, Indonesia, Australia, Germany, France, Italy, Portugal etc. As a leading nanotechnology development manufacturer, RBOSCHCO dominates the market. Our professional work team provides perfect solutions to help improve the efficiency of various industries, create value, and easily cope with various challenges. If you are interested, please send an email to sales1@rboschco.com

Payment Term

T/T, Western Union, Paypal, Credit Card etc.

Shipment Term

By air, by sea, by express, as customers request.

5 FAQs of Alumina bolts and nuts

Q1:How to choose suitable alumina bolts and nuts?

 You need to choose according to the specific application scenarios and requirements. Consider factors such as the size of the connected parts, the required tightening force, and the working environment. For example, in high-temperature environments, it is necessary to ensure the dimensional stability of bolts and nuts; in situations where high insulation performance is required, products with high purity and excellent insulation performance should be selected.

Q2:What should be paid attention to when installing alumina bolts and nuts?

Before installation, check whether the threads are damaged or have impurities, etc., and ensure that the bolts and nuts match the threaded holes of the connected parts well. During installation, the tightening torque must be controlled to avoid damage to the bolts and nuts or loose connections due to excessive torque.

For some special applications, such as in a vibrating environment, anti-loosening measures such as locking nuts and stop washers can be considered.

Q3:What is the service life of aluminum oxide bolts and nuts?

The service life is affected by many factors, such as working environment, frequency of use, stress conditions, etc. Under normal use conditions, due to its corrosion resistance and wear resistance, the service life is usually long, but it may be shortened in harsh environments.

Q4:How to maintain aluminum oxide bolts and nuts?

Check the tightness of bolts and nuts regularly, and tighten them in time if they are loose. Keep the surface of bolts and nuts clean to avoid the accumulation of corrosive substances. For bolts and nuts that have been used for a long time, please pay attention to their wear and aging and replace them when necessary.

Q5:Can aluminum oxide bolts and nuts replace metal bolts and nuts?

In many applications, aluminum oxide bolts and nuts can replace metal bolts and nuts, especially in situations where high-temperature resistance, corrosion resistance, insulation and other properties are required. However, it should also be evaluated based on the specific situation because it may have a certain gap with some metal materials in terms of strength and toughness.