Alumina Ceramic Solid Rods for Laboratory Heating and Electrical Equipment

Alumina ceramic solid rods are manufactured in our China-based factory and available for both standard and customized applications. As an experienced alumina ceramic solid rods manufacturer and supplier, we support OEM, wholesale, and small batch orders worldwide.

Catalogue No. TE-AT-30001
Material ≥ 96% Al2O3
Tolerance  0.05-2.0mm
Max Temperature Range 1450°c(96%)-1730°c(99.7%)
Dimensions/Sizes Download PDF
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Alumina ceramic solid rods are solid bars made from high-purity aluminum oxide. They are widely used as insulating and support components in industrial and laboratory equipment because of their excellent heat resistance, electrical insulation, and strength.

Advantages of Alumina Ceramic Solid Rods

  • High temperature stability reduces warping risk during rapid thermal cycling
  • Smooth surface minimizes contamination and particle release
  • Precise machining allows direct replacement in mechanical systems
  • Corrosion resistance supports use in acid/alkaline atmospheres
  • Long service life lowers annual maintenance costs

 

Alumina Ceramic Solid Rods Properties

Property Unit 99.7% Al₂O₃ 99.5% Al₂O₃ 99% Al₂O₃ 96% Al₂O₃
Color   Ivory White Ivory White Ivory White Ivory White
Density g/cm³ 3.94 3.9 3.83 3.6-3.75
Water Absorption % 0 0 0 0
Hardness Mohs Hardness 9.1 9 9 8.8
Flexural Strength (20°C) Mpa 330 320 300 260
Compressive Strength (20°C) Mpa 2300 2300 2210 1910
Maximum Operating Temperature °C 1730 1700 1680 1450
Thermal Expansion Coefficient(25°C to 800°C) 10⁻⁶/°C 7.6 7.6 7.6 7.6
Thermal Conductivity (25°C) W/(m·K) 29 27 24 22
Dielectric Strength (5mm thickness) AC-kv/mm 22 21 19 15
Dielectric Loss at 25°C@1MHz --- < 0.0001 < 0.0001 0.0003 0.0004
Dielectric Constant at 25°C@1MHz --- 9.8 9.7 9.5 9.2
Volume Resistivity (20°C) Ω·cm³ >10¹⁴ >10¹⁴ >10¹⁴ >10¹⁴
Volume Resistivity (300°C) Ω·cm³ 2*10¹² 2*10¹² 4*10¹¹ 2*10¹¹

 

Specifications of Alumina Ceramic Solid Rods

size for the rod

Item No. Diameter (mm) Length(mm)
TE-AT-30001 0.5 ≤3000
TE-AT-30002 1.2 ≤3000
TE-AT-30003 1.3 ≤3000
TE-AT-30004 1.4 ≤3000
TE-AT-30005 1.5 ≤3000
TE-AT-30006 1.6 ≤3000
TE-AT-30007 2.2 ≤3000
TE-AT-30008 2.4 ≤3000
TE-AT-30009 3.5 ≤3000
TE-AT-30010 3.8 ≤3000
TE-AT-30011 4.5 ≤3000
TE-AT-30012 5.5 ≤3000
TE-AT-30013 6.3 ≤3000
TE-AT-30014 6.5 ≤3000
TE-AT-30015 6.8 ≤3000
TE-AT-30016 8.3 ≤3000
TE-AT-30017 8.5 ≤3000
TE-AT-30018 9.5 ≤3000
TE-AT-30019 10.5 ≤3000
TE-AT-30020 11 ≤3000
TE-AT-30021 11.5 ≤3000
TE-AT-30022 12.5 ≤3000
TE-AT-30023 13 ≤3000
TE-AT-30024 13.5 ≤3000
TE-AT-30025 14 ≤3000
TE-AT-30026 16 ≤3000
TE-AT-30027 16.5 ≤3000
TE-AT-30028 17 ≤3000
TE-AT-30029 19 ≤3000
TE-AT-30030 21 ≤3000
TE-AT-30031 22 ≤3000
TE-AT-30032 23 ≤3000
TE-AT-30033 24 ≤3000
TE-AT-30034 24.5 ≤3000
TE-AT-30035 42 ≤3000

*Note: The table above shows only some standard specifications. For more specifications, please refer to the complete product catalogue or contact us for customization.

 

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Alumina Ceramic Solid Rod Packing:

Sealed plastic bags, protective foam, export-grade cartons.

alumina ceramic solid rods

Applications of Alumina Ceramic Solid Rods

  • Laboratory Instrumentation

    ✅Key Advantages

    1. Precision Dimensional Tolerance
    Consistent rod diameter control within ±0.05 mm ensures stable probe positioning and repeatable sample analysis in laboratory equipment.

    2. High Temperature Resistance for Analytical Accuracy
    Maintains structural integrity up to 1650°C, enabling long-term use in TGA/DSC without material deformation or loss of measurement precision.

    3. Chemical Purity for Reliable Analytical Results
    Manufactured with ≥99.7% Al₂O₃ purity, minimizing contamination risk in sensitive chemical and thermal analysis applications.

    ✅ Problem Solved

    Instrument manufacturers in Germany reported that using alumina ceramic solid rods with certified ±0.05 mm tolerance and ≥99.7% purity reduced sample holder misalignment rates by 80% and eliminated cross-contamination in TGA measurements, directly improving data accuracy and instrument uptime in routine laboratory analysis.

  • Industrial Heating Equipment

    ✅Key Advantages

    1. Long-Term Structural Stability
    Retains mechanical strength above 350 MPa after 1,000+ hours at 1500°C, ensuring uninterrupted furnace operation.

    2. Low Thermal Expansion for Tight Fitting
    Thermal expansion coefficient maintained at 7.8×10⁻⁶/K (room temp to 1000°C), preventing rod deformation and equipment misalignment.

    3. Corrosion Resistance in Harsh Atmospheres
    Performance verified by <0.1% mass loss after 72-hour exposure to reducing or oxidizing furnace atmospheres.

    ✅ Problem Solved

    A European kiln manufacturer implemented alumina ceramic solid rods with certified long-term stability (>1,000 hours, 1500°C) and low expansion in their atmosphere-controlled reactors, resulting in a 50% reduction in unscheduled maintenance due to rod failure and significantly extending the furnace’s operational uptime during continuous production cycles.

  • Electrical/Electronic Assemblies

    ✅Key Advantages

    1. Superior Dielectric Strength
    Electrical insulation ≥12 kV/mm ensures safe performance in high-voltage assemblies and reduces risk of electrical breakdown.

    2. Thermal Stability under Voltage Load
    Maintains insulation properties with dielectric loss tangent <0.0004 at 1 MHz, even when continuously operated at 500°C.

    3. Consistent Manufacturing for System Integration
    Tight diameter tolerance within ±0.05 mm enables precise installation in modular electronic devices and reduces assembly error rates.

    ✅ Problem Solved

    A high-voltage equipment OEM in South Korea adopted alumina ceramic solid rods with ≥12 kV/mm dielectric strength and tight tolerance for their power distribution units, leading to a 95% reduction in insulation failure incidents over 18 months and significantly enhancing equipment reliability during prolonged high-temperature operation.

Usage Instructions of Alumina Ceramic Solid Rods

  • How to Use Alumina Ceramic Solid Rods:

    a. Check for any surface cracks or visible damage before installation.
    b. Mount rods with matching holders to avoid excessive mechanical stress.
    c. Ensure gradual temperature ramp-up to prevent thermal shock.

  • How to Store Alumina Ceramic Solid Rods:

    a. Store in a dry, room-temperature warehouse
    b. Avoid stacking directly without padding

  • How to Clean Alumina Ceramic Solid Rods:

    a. Can be soaked in an acid bath (HNO₃) for residual removal
    b. Apply ultrasonic cleaning for organic residue

  • Alumina Ceramic Solid Rods Tips:

    a. Avoid sudden temperature changes (>300°C/min) to minimize the risk of thermal fracture.
    b. Handle with gloves to prevent contamination and maintain material purity.
    c. For specific operating environments, consult technical support for best practices.

Alumina Ceramic Solid Rods FAQ

  1. Q: What is the maximum continuous operating temperature?
    A: These alumina rods can withstand up to 1730°C(99.7% Purity), depending on load and thermal cycling conditions.
  2. Q: Can you produce custom rods with holes or grooves?
    A: Yes. We support drilled, slotted, and threaded features with a tolerance down to ±0.01mm.
  3. Q: Are your Al2O3 rods resistant to chemicals?
    A: Yes, our Al2O3 rods exhibit excellent chemical inertness and are resistant to most acids, alkalis, and corrosive substances, especially our high-purity alumina oxide rods.
  4. Q:  Do you offer wholesale pricing for alumina ceramic solid rods?
    A: Yes, we offer wholesale pricing for alumina ceramic solid rods. All orders are supplied directly from our factory, with no distributors involved. Please contact us for bulk pricing and custom order details.
  5. Q:  Are you a manufacturer or a trading company?
    A:  We are an alumina ceramic solid rods manufacturer and factory based in China, supporting both OEM and custom orders.
  6. Q:  Can I get customized alumina ceramic solid rods for my project?
    A: Absolutely. We specialize in custom Alumina rods. You can specify diameter, length, tolerances, and even special features like polish for your Alumina ceramic solid rods.

Hear From Our Clients About Alumina Ceramic Solid Rods

  • ⭐️⭐️⭐️⭐️⭐️
    “We sourced alumina ceramic solid rods wholesale from your China factory and were impressed by both the quality and service.”
    — Michael S., Technical Director, Global HeatTech Inc.
  • ⭐️⭐️⭐️⭐️⭐️
    “Custom alumina ceramic solid rods perfectly matched our specifications for industrial heating equipment.”
    — Dr. Emily Tran, R&D Manager, LabEquip Solutions Ltd.
  • ⭐️⭐️⭐️⭐️⭐️
    “Reliable supplier for ongoing batch supply; quick turnaround and strong technical support.”
    — Richard K., Procurement Lead, Precision Ceramics Europe GmbH
  • ⭐️⭐️⭐️⭐️⭐️
    “As a distributor, we appreciate the OEM options and professional packaging.”
    — Daniel Wu, Purchasing Manager, Pacific Materials Trading Co.

 

 

 

 

 

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Customized Alumina Ceramic Solid Rods

We offer tailored manufacturing for alumina ceramic solid rods, including size customization, bulk wholesale supply, and special surface finishes. What You Can Specify (Custom Options) :

  1. Width: 2–200 mm, ±0.1-5mm tolerance.
  2. Lengths up to 3500 mm. Contact us for other sizes.
  3. End details: threaded
  4. Surface finish: raw, polished or glazed
  5. Processing type: CNC, plane grinding, drillingcutting
  6. Colour: Red, Black, Blue and more colours
  7. Others: punching, slotting

We support CAD file processing and 1:1 prototyping for custom designs.

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