High Temperature Resistant 95%/99%/99.5% Alumina Crucible

High Temperature Resistant Alumina Crucible 

Ceramic Crucible combine high temperature resistance, corrosion resistance, high purity, and excellent thermal shock resistance, making them widely used in metallurgy, electronics and semiconductors, new energy, and scientific research laboratories. They meet the high-temperature requirements of precious metal smelting, electronic material sintering, and lithium battery cathode material preparation, suitable for both small-batch sample processing in laboratories and large-scale production in industrial kilns. Their flange design improves installation and positioning accuracy, and the product range of different purity grades (95%/99%/99.5%) covers both conventional and high-end markets. Their core competitiveness lies in their structural stability at high temperatures, chemical inertness, and low contamination, effectively ensuring product quality and production efficiency.

Product Specifications

Material: 95%/99%/99.5% High-purity alumina (Al₂O₃)

Shape: Flange-equipped/Straight cylinder (as shown in the picture, the flange design facilitates hanging and positioning)

Size Range: Inner diameter 10-200mm, height 20-300mm, wall thickness 2-10mm (customizable)

Temperature Range: 1600-1800℃ (99% alumina up to 1800℃)

Volume: 5ml-5000ml (customizable)

Surface Finish: Smooth inner and outer walls, Ra≤0.8μm, free of pores and cracks

Product Core Features

Product Key Advantages

1. Excellent high-temperature resistance — Can be used continuously at temperatures above 1600°C
2. Strong chemical inertness — Does not react with most molten metals and glass melts
3. Good thermal stability — Not easily cracked by rapid heating and cooling
4. Excellent insulation performance — Maintains good electrical insulation even at high temperatures

Product Applications

Precautions for Usage

1. Avoid suddenly temperature changes — Recommended heating/cooling rate ≤ 5°C/min
2. Compatible heating equipment — Use with silicon molybdenum rods, silicon carbide rods, or induction heating
3. Prevent mechanical shock — Handle with care during transport to avoid collisions
4. Chemical compatibility check — Avoid contact with hydrofluoric acid, strong alkali melts, and certain low-melting-point metal oxides
5. Storage environment — Store in a dry place to prevent moisture absorption

Selection Recommendations

Maintenance and Lifespan

1. Normal service life: 50-200 cycles (depending on usage conditions)
2. Disposal signs: Penetrating cracks, severe deformation, or inner wall peeling
3. Waste disposal:  recycled as alumina raw material or be treated as ordinary ceramic solid waste

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 failur