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alumina ceramic insulator precise dimensional accuracy for electronic components-0

Alumina Ceramic

Home >  Products >  Industrial Ceramics >  Alumina Ceramic

Alumina Ceramic Insulator Precise Dimensional Accuracy for Electronic Components

Premium Material Parameters 

Made of standard high-purity alumina, our insulators feature accurate and stable physical indicators, including a volume density of 3.45 g/cm³ and zero water absorption.

 

Excellent Thermal Stability

With low thermal expansion coefficient and strong thermal shock resistance, they withstand continuous high-temperature operation and frequent cold-hot cycles without cracking or deformation.

 

Stable Electrical Insulation

With a stable dielectric constant of 10 (tested at 1MHz, 25℃), the dense ceramic structure provides high dielectric strength and low dielectric loss. It achieves reliable circuit isolation, effectively preventing current leakage and electric breakdown under high-voltage and high-frequency conditions.

 

Mechanical Strength & Customization

These insulators own superior mechanical properties with 300Mpa flexural strength and 1300 Vickers hardness. We support flexible OEM/ODM customization of sizes, special shapes, grooves and surface treatments to meet various precision assembly requirements.

Introduction

                                                                                            Product Details                                                                                            

    1. Introduction on Alumina insulators

    Alumina ceramic insulators are core structural and insulating components indispensable in modern precision electronic manufacturing, high-voltage power equipment, industrial automation systems, communication devices and new energy optoelectronic facilities. As a high-performance inorganic ceramic product, it is fabricated from high-purity alumina powder through scientific formula blending, isostatic pressing forming, ultra-high temperature sintering and precision post-processing. Featuring high material density, ultra-low porosity, uniform internal structure and stable physical and chemical attributes, this insulator outperforms traditional plastic, glass and ordinary low-grade ceramic insulating parts in comprehensive performance. It overcomes the inherent defects of conventional insulating materials, including poor temperature resistance, low mechanical rigidity, easy aging and insufficient voltage resistance. Capable of stable long-term operation in high-temperature, high-humidity, high-voltage and corrosive harsh environments, alumina ceramic insulators have become the most reliable insulating and supporting solution for high-end electronic and industrial electrical equipment worldwide.

     

    2. Features of Alumina ceramic Insulator

    2.1 Material

    The product adopts strictly selected high-purity alumina raw materials with fine particle size and ultra-low impurity content, ensuring uniform texture and consistent performance of each finished insulator. The optimized industrial formula effectively improves the structural compactness and overall rigidity of the ceramic body, endowing the product with superior mechanical properties such as extreme hardness, strong compressive resistance, excellent wear resistance and structural impact resistance. During long-term high-frequency operation and repeated mechanical extrusion, friction and vibration, the insulator maintains complete structural stability without deformation, cracking or surface wear. In terms of electrical performance, high-purity alumina ceramic owns ultra-low dielectric loss and excellent dielectric strength, which can form stable and reliable electrical isolation between circuit units. It effectively blocks current leakage, prevents electric breakdown and arc discharge, and avoids short-circuit faults caused by insulation failure, fully guaranteeing the safe, stable and continuous operation of precision electronic modules, high-voltage power distribution equipment and industrial control systems.

     

    2.2 Features

    Our alumina ceramic insulators possess exceptional thermal stability and environmental adaptability, adapting to various extreme working conditions that ordinary insulating materials cannot withstand. The product has outstanding high-temperature resistance and thermal shock resistance, tolerating long-term continuous high-temperature operation and frequent cold-hot alternating cycles without structural warping, cracking or performance attenuation. Different from organic insulating materials that are prone to melting, aging and performance degradation under high temperature, alumina ceramic can maintain stable physical structure and electrical insulation performance in high-temperature working scenarios. Meanwhile, it features excellent moisture-proof, waterproof, anti-corrosion, anti-oxidation and anti-aging capabilities, effectively resisting erosion from humid air, industrial dust, chemical gas and corrosive liquid. Its superior weather resistance greatly prolongs the service life of matching electronic and electrical equipment, significantly reducing equipment failure rate, maintenance frequency and overall industrial operation costs for end users.

     

    3. Manufacturing of Alumina ceramic

    All our alumina ceramic insulators are manufactured via standardized, fully mature industrial production processes with strict full-process quality control. The complete production flow includes precise raw material screening and proportioning, uniform powder mixing, high-pressure isostatic forming, segmented high-temperature sintering, precise CNC fine grinding and surface finishing. Each processing link adopts standardized parameter control to eliminate performance differences between batches. Strict finished product inspection procedures including dimensional tolerance detection, flatness testing, insulation performance testing and structural defect screening are implemented before delivery. The final products feature ultra-precise dimensional accuracy, tight tolerance control, smooth and flat surface and high structural consistency, realizing zero-error seamless assembly and precise matching with various precision electronic components and electrical hardware. The standardized production system greatly improves product yield and batch stability, helping downstream manufacturing enterprises optimize assembly efficiency and reduce production costs.

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    4. Customization of Alumina ceramics

    To meet the diversified and personalized application demands of different industries and special equipment scenarios, we provide full-range OEM and ODM one-stop customized services for alumina ceramic insulators. We support customized adjustment of multiple core parameters, including different alumina purity grades, non-standard outer diameters, inner apertures, lengths and thicknesses, as well as special-shaped structures such as multi-hole positioning, grooving and step surfaces. Professional surface processing services including fine polishing, glazing, metallization and insulation strengthening treatment are also available. Whether it is micro-miniature precision insulators for wearable electronic devices and miniature sensors or large-size structural insulating parts for industrial high-voltage power equipment, we can design and produce according to customer drawings, samples and technical requirements. Equipped with professional R&D teams, advanced production equipment and perfect quality inspection system, we support free technical solution evaluation, fast sample production, low MOQ trial order and stable mass delivery, providing reliable customized insulation component solutions for global customers in electronics, power, communication, automation, new energy and industrial manufacturing fields.

    Product Parameter Table

    Alumina Purity

    92%

    95%

    96%

    99%

    99.6%

    Color

    White

    White

    White

    Ivory White

    White

    Volume density(g/cm3)

    3.45

    3.5

    3.7

    3.75

    3.9

    Water Absorption

    0

    0

    0

    0

    0

    Flexural Strength

    300Mpa

    300Mpa

    320Mpa

    330Mpa

    330Mpa

    Vickers hardness

    1300

    1400

    1400

    1800

    1800

    Dielectric Constant (at 1MHZ 25℃)

    10

    10

    10

    10

    10

    Modulus of elasticity

    350Gpa

    350Gpa

    350Gpa

    370Gpa

    370Gpa

    thermal conductivity (30℃)

    18W/M.K

    24W/M.K

    24W/M.K

    25W/M.K

    28W/M.K

    Volume resistivity

    10^14Ω•cm

    10^14Ω•cm

    10^14Ω•cm

    10^14Ω•cm

    10^15Ω•cm

    Dielectric strength

    20KV/mm

    20KV/mm

    20KV/mm

    20KV/mm

    30KV/mm


                                                                                              Development History                                                                                    

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                                                                                            Patents and certification                                                                                  

    We’ve obtained various global certifications including CE, EMC, LVD, RoHS, FDA, MSDS, ISO 9001, SGS and TUV. We also own eight registered trademarks and forty technical patents to support independent R&D.
    Our proprietary core technologies run through all product lines: porous ceramics, industrial ceramic components, special glass, metallized ceramics, liquid absorption cotton, ozone generators and silicone goods. All products are manufactured in strict accordance with international quality standards, delivering reliable and high-performance solutions that have gained wide recognition and market trust worldwide.                   

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                                                                                                   Package                                                                                                    

    We adopt scientific and standardized packaging solutions tailored to product characteristics to effectively prevent collision, extrusion, dust and moisture damage. With mature global transportation system and strict shipment inspection procedures, we ensure all products remain intact and stable during long-distance delivery, providing customers with safe, efficient and reliable one-stop logistics service.

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                                                                                               Services                                                                        

    Inquiry & Customization

    We provide fast and accurate quotation response for all your inquiries. Flexible OEM & ODM customization solutions are available to meet your unique product design, packaging and branding requirements.

    Order Quality Control

    We keep clients updated with full production progress throughout the whole order cycle. Our QC team carries out strict comprehensive pre-shipment inspection to guarantee all goods comply with your quality standards before delivery.

    Customs Document Support

    We prepare a full set of standard export documents including commercial invoice, packing list, certificate of origin and other certification papers, to ensure smooth global customs clearance for shipments to all destinations worldwide.

    One-Stop Logistics

    Multiple shipping methods including sea freight, air freight and express delivery are offered to match your schedule and budget. We supply real-time cargo tracking service so you can monitor shipment status anytime.

    Flexible Payment

    We support a wide range of secure international payment terms such as T/T, L/C, Western Union and other mainstream cross-border settlement methods to reduce your cross-border transaction risks.

    After-Sales Support

    Our professional after-sales team offers timely technical and business support all year round. We maintain steady long-term stable supply capacity to fully back up your continuous market sales and project demands.

                                                                                                   FAQ                                                                                                           

    01

    Question: Can you produce based on customers’ drawings or physical samples?

    Answer: Absolutely yes. We accept technical drawings in all mainstream file formats as well as actual physical samples. Before formal production, our engineering team will provide a full professional DFM feasibility evaluation for your reference.

    02 

    Question: How long is the production lead time for custom orders?

    Answer: Sample lead time: 3–7 working days. Custom mold lead time: 5–10 working days (we will confirm the cycle separately with you for complex molds). Mass production lead time: 7–20 working days, depending on product structure complexity and order quantity.

    03 

    Question: What’s your minimum order quantity for custom products?

    Answer: We provide flexible MOQ solutions for all customized items. We will try our best to set a low minimum order volume to support your small-batch trial orders, meanwhile we can handle stable mass production to satisfy your long-term bulk demands.

    04 

    Question: What customization services can you provide?

    Answer: We support comprehensive one-stop customization, including product size, shape, appearance, precision tolerance, surface treatment, hole grooving, bending, cutting and adjustable high-temperature resistant parameters. Custom engraved LOGO and exclusive customized packaging are also available as extra personalized options upon request.

    05 

    Question: Do you accept third-party inspection of finished products?

    Answer: Yes, we fully cooperate with all mainstream authorized third-party testing institutions. Well-known organizations such as SGS, BV and other internationally recognized inspection bodies are all acceptable. We can supply complete official inspection reports and material certification documents as you require.

    06 

    Question: Can you customize raw material options for products?

    Answer: Sure. We can select and match appropriate raw materials according to your application scenarios, working conditions and performance requirements, including alumina, zirconia, quartz, silicone and other special engineering materials, and adjust related performance parameters to meet your usage standards.

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