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E-mail
taomsun@vip.163.com
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Phone
13862625813
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Address
Building A, Renheng PARK, 1211 Xinghu Street, Suzhou Industrial Park
SUZHOU TAOMSUN SCIENTIFIC INSTRUMENTS CO.,LTD
taomsun@vip.163.com
13862625813
Building A, Renheng PARK, 1211 Xinghu Street, Suzhou Industrial Park
Brand:TAOMSUN |Overseas Tech Support:METICULAB (Korea) |ISO 9001· Precision Ceramic Manufacturing
TAOMSUN 99% alumina cruciblesare manufactured from high-quality α-alumina powder using the slip casting process and high-temperature sintering. With Al ₂O₃ content ≥99.0%, these crucibles offer exceptional purity, high density, outstanding high-temperature resistance, chemical corrosion resistance, and thermal shock resistance. They are widely used in new materials research, electronic ceramics, chemical pigments, metallurgy & mining, laboratory sample analysis, phosphors, rare earth materials, lithium-ion battery cathode material calcination, and precious metal melting.
🔍 Key Features:Al₂O₃ ≥99.0% purity no additives or fillers; Density ≥3.80 g/cm³ fully dense, no through-pores; Water absorption ≤0.01% supports both dry and wet processing; Long-term use up to 1600°C ideal for high-temperature applications; Custom shapes available square, arc, cylindrical, and non-standard.
| Product Series | TAOMSUN 99% Alumina Crucible Series |
| Brand / OEM | TAOMSUN(Overseas Partner: METICULAB) |
| Material | 99% Alumina (Al ₂O₃)· α-alumina, no fillers |
| Chemical Composition | Al₂O₃ ≥99.0%; Fe₂O₃ ≤0.1%; SiO₂ ≤0.2%; R₂ O ≤0.2% |
| Bulk Density | ≥3.80 g/cm³dense, no porosity, no through-pores |
| Water Absorption | ≤0.01%fully dense, supports dry & wet processing |
| Mechanical Strength | Bending strength>350 MPa; Compressive strength>12000 MPa |
| Dielectric Constant | ≈2.3(at 1 MHz) |
| Long-Term Working Temperature | ≤1600°C |
| Short-Term Maximum Temperature | ≤1800°C |
| Forming Process | Slip Casting+ high-temperature sintering |
| Available Shapes | Square / Arc / Cylindrical / Custom |
| Size Range | Square: side 60–330mm; Arc: 10–2300ml; Cylindrical: OD 30–376mm |
| Dimensional Tolerance | ±2–3%(per production drawings) |
| Quality System | ISO 9001· Precision Ceramic Manufacturing |
| Customization Service | Shape, size, capacity, and drawing-based customization available |
✓ Suitable Environments:Oxidizing and reducing atmospheres; stable with air, water vapor, hydrogen, and carbon monoxide at high temperatures; suitable for fusion with weak alkaline fluxes such as anhydrous Na ₂CO₃.
✗ Strict Prohibitions:Do NOT use with strong alkaline substances (e.g., Na ₂O₂, NaOH) or acidic fusion environments (e.g., K ₂S₂O₇).
✗ Equipment Precaution:Do NOT place the crucible directly into a quartz tube, as high-temperature reactions may cause equipment damage.
💡Safe Handling:Allow crucible to cool below 200°C before removal to avoid thermal shock or burns.
Q: What is the maximum temperature your alumina crucibles can withstand?
A: Our 99% alumina crucibles support long-term use up to 1600°C, with a short-term maximum of 1800°C. We recommend allowing the crucible to cool below 200°C before removal to prevent thermal shock damage.
Q: Can you customize non-standard shapes and sizes?
A: Yes. We support square, arc, cylindrical, and various non-standard custom shapes. Standard ranges include square (side 60–330mm), arc (10–2300ml), and cylindrical (OD 30–376mm). Please send your drawings for a specific quotation.
Q: What is the difference between 99% alumina and 95% alumina crucibles?
A: 99% alumina offers higher purity, higher density (≥3.80 g/cm³), lower water absorption (≤0.01%), and better high-temperature and corrosion resistance compared to 95% alumina. It is preferred for high-purity and high-temperature applications.
Q: What substances should NOT be used with these crucibles?
A: Do not use with strong alkaline substances such as sodium peroxide (Na ₂O₂) or sodium hydroxide (NaOH), or acidic fusion agents like potassium pyrosulfate (K ₂S₂O₇). Also avoid placing the crucible directly in quartz tubes.
Q: What is the lead time for custom orders?
A: Standard sizes are available from stock with fast delivery. Custom orders typically take 15–30 working days depending on complexity and quantity.
Q: How do you ensure product quality?
A: Every crucible undergoes strict inspection: appearance check (no cracks, deformation, or impurities), dimensional inspection with calipers (tolerance ±2–3%), and physical/chemical property testing per relevant standards. Products are individually packed with shockproof materials.


Suzhou Taomsun (TAOMSUN)is a professional supplier of precision industrial ceramics and laboratory consumables, with integrated supply chain capability from raw material formulation, slip casting to high-temperature sintering. With over ten years of industry experience, we are committed to providing high-quality products and reliable services to customers worldwide. Our product portfolio covers high-purity alumina crucibles, precision ceramic components, optical gratings, ruby/sapphire micro-orifice parts, and life science consumables. We serve industries including life sciences research, analytical instrumentation, chemical analysis, and materials science.🌏 Overseas technical support provided by METICULAB (Korea).
TAOMSUN alumina crucibles are manufactured under a strict quality control system. Specifications are typical values and may vary with custom configurations.
For OEM/ODM customization, non-standard sizes, or special requirements, please contact our sales team. Overseas customers may contact METICULAB (Korea) for Korean/English technical consultation.