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High Hardness and Wear Resistance Alumina Ceramic Nuts for Different Industrial

High Hardness and Wear Resistance Alumina Ceramic Nuts for Different Industrial

Alumina Ceramic Nuts are precision fasteners made primarily of high-purity alumina (Al₂O₃), manufactured using isostatic pressing combined with precision machining. As the optimal matching fastener for alumina ceramic screws, ceramic nuts possess superior performance characteristics that complement ceramic screws, and are widely used in special working environments such as high-temperature, corrosive, and insulating conditions.

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High Hardness and Wear Resistance Alumina Ceramic Nuts for Different Industrial

 

Product Description

Alumina Nuts are high-performance fastening accessories used in conjunction with ceramic screws. They possess core advantages such as high temperature resistance, insulation and non-magnetic properties, strong resistance to acid and alkali corrosion, high hardness and wear resistance, and cleanliness without precipitation. They perfectly solve the pain points of metal nuts, such as easy rusting, conductivity, and high-temperature stripping, and plastic nuts, such as easy deformation and poor corrosion resistance. They are widely used in semiconductor, new energy, chemical and pharmaceutical, high-temperature industry, aerospace and other fields, and can meet the requirements of different levels of high temperature, strong corrosion, high insulation, non-magnetic and clean working conditions. With environmental adaptability and long-term stability far exceeding that of traditional nuts, they have become an indispensable fastening accessory for high-end equipment and special working conditions, and are a key component in realizing a fully ceramic non-interference fastening system.

 

Product Specifications

  1. Thread Standard: Compatible with ceramic screws, mainstream metric M2-M16, supports imperial, American, and non-standard thread customization;
  2. Nut Types: Standard hexagonal nuts, thin nuts, lock nuts, round nuts, adaptable to different installation spaces;
  3. Dimensional Accuracy: Thread accuracy up to 6H/6G grade, inner hole tolerance ±0.05mm, hexagonal flat tolerance ±0.1mm;
  4. Thread Type: Full thread profile, customizable anti-loosening threads and fine threads;
  5. Surface Finish: Matte brushed/mirror polished, burr-free and pore-free, meeting semiconductor cleanliness requirements.

 

Product Advantages

Compared to traditional metal and plastic nuts, alumina ceramic nuts offer the following irreplaceable advantages:

  1. Never rusts — Completely solves the corrosion problem of metal nuts
  2. Insulating and non-magnetic — Meets the requirements of special electromagnetic environments
  3. High temperature resistance — Can operate continuously at temperatures above 1600℃
  4. Wear resistance — Service life can be 3-5 times that of metal nuts
  5. Environmentally friendly and aesthetically pleasing — Meets modern industrial environmental protection requirements

 

Core Performance Characteristics

1. Excellent High Temperature Resistance

    95% Alumina Ceramic Screws: Long-term operating temperature up to 1600-1700℃

    99% Alumina Ceramic Screws: Long-term operating temperature up to 1600℃, short-term withstand of 1800℃

    Does not deform or stretch under high temperature conditions, and will not reduce connection strength

 

2.Excellent mechanical properties

Performance Indicators

95% alumina 99% alumina
Density ≥3.68 g/cm³ ≥3.83 g/cm³
Hardness (HV) ≥1500 ≥1650
Flexural Strength 3000 Kgf/cm² 3000 Kgf/cm²
Compressive Strength 25000 Kgf/cm² 26000 Kgf/cm²
Maximum Operating Temperature 1700℃ 1800℃

 

3.Unique Functional Properties

   High Hardness and Wear Resistance: With a Mohs hardness of up to 9, second only to diamond, it maintains its shape even under continuous friction

   Excellent Insulation: Volume resistivity > 10¹² Ω·cm, making it an ideal electrical insulating material

   Non-Magnetic: Completely non-magnetic under normal conditions, suitable for environments sensitive to magnetic fields

   Chemical Stability: Resistant to acid and alkali corrosion, unaffected by acids except hydrofluoric acid

   Bio-Inert: Possesses good biocompatibility, suitable for medical applications

 

Applications

Applications Remark
1.Electronics and electrical industry

(1)Internal fixing of semiconductor manufacturing equipment and liquid crystal manufacturing equipment

(2)Insulation fastening of high voltage electrical equipment

(3)Hermetic seals for vacuum electronic components, thyristors, etc.

2. Aerospace industry

(1)Insulation and anti-interference devices on electronic devices

(2)Fastening of high-temperature components such as turbine blades, rocket nozzles, and thermal shields.

3.Chemical and Energy Industries

(1)Fastening connections of high-temperature furnaces and heaters

(2)New energy equipment such as fuel cells and solar panels

(3)Corrosion-resistant fasteners for petrochemical equipment

4.Medical device industry

(1)Surgical bone fixation (an alternative to metal fixation)

(2)Non-magnetic, insulating components of medical equipment

5.Other special fields

(1)Food processing and pharmaceutical industries (non-toxic and odorless, meeting food safety standards)

(2)Vacuum equipment, nuclear industry and other special environments

 

Usage Precautions

Installation Requirements

  1. Ceramic nuts are relatively brittle; avoid hammering or excessive torque during installation. It is recommended to use matching ceramic screws.
  2. Temperature Control: Avoid rapid cooling and heating to prevent thermal shock and cracking.
  3. Matching Recommendations: Recommended for use with ceramic screws. When using with metal threads, ensure proper tolerance matching.

 

Our workshop

 

                CNC Workshop

 

                           Testing Room

 

                      Surface grinding Workshop

 

                         Sintering Workshop 

 

                   Circular Grinding Workshop

 

                  Injection molding Machine Workshop

 

Why choose us?

1.Customized R&D, rather than standard product adaptation

2.Deep control of materials science:Material Selection Based on Needs,Microstructure Optimization,Batch Consistency

3.Precision machining capability:Flatness can reach 0.001mm, parallelism 0.002mm, and roughness Ra 0.1μm.

 

FAQ

Q1: What products does your company offer?

We specialize in high-performance ceramics such as alumina and silicon nitride, providing insulators, structural components, wear-resistant parts, and customized solutions.

 

Q2: Can you customize non-standard parts?

Yes. We support processing based on provided drawings and collaborative technical development, offering a full-process service from design to mass production.

 

Q3: What about accuracy and delivery time?

Standard tolerance ±0.05mm, precision grade ±0.01mm; samples 7-15 days, bulk orders 20-30 days.

 

Q4: Main application areas?

Power, electronics, machinery, chemical, and aerospace industries.

 

Q5: Quality assurance measures?

Full-process quality inspection, providing material reports and performance test data, supporting third-party certification and testing.

 

Q6: Do you provide technical support?

We provide professional support such as material selection consultation, design optimization, and failure analysis.

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Contact Us :cindy@w7ceramicpartsltd.com

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