Gotrays High Purity Alumina Ceramic Powder Al2O3 Grade 99.9 Alpha Phase
Premium aluminum oxide powder for advanced ceramics electronics and refractory applications
Key Specs
- Purity 99.9%
- Particle Size 0.5 to 100 microns
- Phases Available Alpha and Gamma
- Bulk Density 3.9 g/cm³
Pricing and Pack Sizes
- Starting price available per kg
- Pack sizes: 1kg, 25kg, and custom bulk orders
High resolution product image available above
Overview Description
Gotrays Alumina Ceramic Powder is a fine, white aluminum oxide (Al2O3) designed for top performance. It offers excellent thermal conductivity, outstanding hardness, and great chemical stability. This makes it perfect for sintering high-quality ceramics used in electronics, refractories, and advanced manufacturing.
Why Gotrays Alumina Ceramic Powder Stands Out
- High Whiteness for clean, consistent finishes
- Uniform Particle Size to ensure smooth processing and better results
- Low Soda Content below 0.1%, reducing unwanted reactions
- Minimal Impurities to guarantee high purity and reliability
Check out our quick 30-second demo showing powder flowability and how it performs in thermal spraying applications.
Technical Specifications
| Property | Details |
|---|---|
| Chemical Formula | Al2O3 |
| Purity | 99.5% to 99.999% |
| Phase | Alpha (Calcined), Gamma |
| Particle Size (D50) | 0.3 to 85 microns (customizable) |
| Bulk Density | 0.8 to 3.95 g/cm³ |
| Specific Surface Area | 0.5 to 15 m²/g (BET method) |
| Melting Point | 2072 °C |
| Hardness | 9 Mohs |
| Impurities | Less than 0.05% |
For detailed information, download our full spec sheet PDF tailored to help you pick the right alumina ceramic powder for your application.
Key Properties and Benefits
Gotrays High Purity Alumina Ceramic Powder stands out with several key advantages that matter most to U.S. manufacturers:
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Exceptional Hardness and Wear Resistance
Perfect for abrasives and tough coatings, our alumina powder ranks high in durability and scratch resistance.
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High Thermal Shock Resistance
Handles sudden temperature changes up to 2000°C, making it ideal for refractory materials like furnace linings and crucibles.
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Excellent Electrical Insulation
With a dielectric strength above 20 kV/mm, it’s a reliable choice for electronics, insulators, and substrates.
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Low Thermal Expansion
Maintains dimensional stability even in high heat environments, reducing risks of cracks or deformation.
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Eco-Friendly Production
Sourced sustainably from bauxite through the Bayer refining process, supporting greener manufacturing practices.
Gotrays versus Competitors
| Feature | Gotrays Alumina Powder | Competitor Average |
|---|---|---|
| Purity | 99.9% Alpha Phase | 99.5% – 99.7% |
| Price per kg | Competitive Pricing | Higher |
| Particle Size Range | 0.5 to 100 microns | Narrower range |
| Bulk Density | Up to 3.9 g/cm³ | Lower average |
Gotrays offers superior purity and flexible sizing at a competitive price — built for U.S. industries demanding quality and consistency.
Applications and Use Cases
Gotrays High Purity Alumina Ceramic Powder fits a wide range of industries and uses. Here’s where it shines:
- Electronics: Great for substrates, insulators, and LED phosphors thanks to its excellent electrical insulation and purity.
- Refractories: Perfect for crucibles, furnace linings, and any high-temperature resistant parts because of its thermal shock resistance.
- Abrasives: Ideal in polishing compounds, sandblasting media, and wear-resistant coatings due to its hardness.
- Advanced Ceramics: Used in making sapphire ingots and biomedical implants where high purity and strength matter.
- Other Uses: Works well as a catalyst, in thermal spray coatings, and battery separators for energy storage solutions.
Case Study Highlight
See how Gotrays Alumina Powder boosted production yield in lithium-ion battery manufacturing, improving both efficiency and material performance.
If you need reliable, high purity alumina for your project or production, Gotrays has you covered.
Available Grades and Customization
We offer Gotrays Alumina Ceramic Powder in several grades to fit your needs:
- Calcined Alpha – Ideal for refractory applications requiring high thermal resistance and stability
- Reactive Gamma – Perfect for fine ceramics and advanced manufacturing processes
- High Purity 5N – Electronics grade with 99.999% purity for sensitive electronic components
You can also customize the powder to match your project specs:
- Particle Morphology – Choose between spherical or irregular shapes for better packing or flow
- Surface Treatments – Available to improve bonding or dispersion depending on your use case
- Blending Options – Mix with zirconia powder for enhanced mechanical properties
This flexibility makes our aluminum oxide powder a great fit whether you’re working on electronics, ceramics, or refractory products.
Quality Assurance and Certifications
We take quality seriously at Gotrays. Our Alumina Ceramic Powder meets ISO 9001 standards, ensuring consistent product excellence. It’s also REACH compliant, so you know it’s safe and environmentally responsible for use in the US market.
Every batch undergoes thorough testing, including:
- SEM analysis for particle shape and size
- XRD phase purity to confirm alpha or gamma alumina
- ICP testing to keep impurities under 0.05%
Sustainability is part of our process too. We source our aluminum oxide powder from conflict-free suppliers and use recyclable packaging to reduce waste. This means you get a premium, eco-friendly product that fits your quality and environmental standards.
Packaging Shipping and Pricing
We offer Gotrays High Purity Alumina Ceramic Powder in flexible packaging options to fit your needs: 1kg jars, 25kg bags, and large 1-ton super sacks for bulk orders.
Shipping is fast and reliable across the U.S. and worldwide, using trusted carriers like FedEx and DHL. Expect delivery within 3 to 7 days, keeping your projects on schedule.
Our pricing is competitive and volume-friendly. You get a 10% discount on orders over 100kg, making it easy to scale up without breaking the budget.
Minimum order quantity starts at just 1kg so you can try the powder before committing to larger quantities.
Whether you’re sourcing calcined alumina ceramic or fine alpha alumina powder, we make buying simple and convenient.
FAQs
What is the difference between alpha and gamma alumina
Alpha alumina is the most stable and dense form of aluminum oxide, ideal for high-strength applications like refractories and abrasives. Gamma alumina is less dense but more reactive, making it great for fine ceramics and catalyst support. Both are available in high purity forms but serve different industrial needs.
How should I store alumina ceramic powder to prevent moisture absorption
Keep the powder in a tightly sealed container in a cool, dry place. Moisture can cause clumping and affect performance, so using desiccants and avoiding humid environments helps maintain quality.
Can alumina ceramic powder be used in 3D printing and additive manufacturing
Yes, especially the fine, uniform powders like Gotrays alumina are suitable for additive processes including binder jetting and laser sintering. Proper particle size distribution ensures smooth layering and strong final parts.
What handling safety measures should I follow
Wear masks and gloves to prevent inhalation and skin contact, as fine alumina dust can irritate. Work in well-ventilated areas and avoid generating airborne dust as much as possible.
What’s the typical shelf life of Gotrays alumina ceramic powder
Stored properly, the powder maintains its quality for 12 months or more. Always check for clumping or discoloration before use and reseal containers promptly after opening.
Related Products and Contact Options
Looking for more? We also offer Zirconia Powder, Silicon Carbide, and Ceramic Binders to complement your alumina ceramic powder needs.
Have questions or want a custom quote?
- Fill out our Contact Expert Form
- Download Brochure for full product details
- Use Live Chat for quick responses on bulk orders
We’re here to help you find the right materials for your project.
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