High Thermal Conductive Spherical Alumina Powder

• Customization: Available
• Certification: ISO
• Application: Rubber, Plastic, Chemical, Construction, Metallurgy, Ceramic, Casting, Glass
• Model NO.: SA
• Transport Package: Paper Bag, Big Bag, Pallet
• Specification: Al2O3>99.5%
• Trademark: ST
• Origin: Lianyungang, China
• HS Code: 2811229000
• Production Capacity: 50000pieces/Year

Product Description

 

Product Description
This product is high-purity spherical aluminum oxide powder (Al₂O₃), designed for high-end applications such as electronic packaging, thermal interface materials (TIM), and LED heat dissipation. It features ultra-high thermal conductivity, excellent insulation, and a high filling rate. Using an advanced plasma melting spheroidization process, it ensures high particle sphericity and uniform particle size distribution, significantly enhancing the thermal conductivity of composite materials while maintaining good fluidity and processability.

 

Product Parameters

 

Item	Parameters
Chemical Formula	Al2O3 (α-alumina)
Purity	≥99.5%
Thermal Conductivity	30-40 W/(m·K)
Particle Size (D50)	1μm-50μm (customizable)
Sphericity	≥95%
Density	3.7 g/cm³
Insulation Resistance	≥10^14 Ω·cm
Moisture Content	≤0.5%
Application Fields	Thermal adhesives, thermal pads, 5G materials, semiconductor packaging

 

Core Advantages
Ultra-High Thermal Conductivity - Thermal conductivity reaches 30-40 W/(m·K), significantly improving heat dissipation efficiency.
High Purity (≥99.5%) - Low sodium and chlorine content, suitable for precision electronic packaging.
Perfect Sphericity (≥95%) - Increases filling rate and reduces viscosity of composite materials.
Customizable Particle Size (1-50μm) - Meets the needs of different thermal conductive materials.
Excellent Insulation - Insulation resistance ≥10¹⁴ Ω·cm, ensuring the safety of electronic devices.
Low Oil Absorption Value - Optimizes the processing performance of resin systems.

 

Typical Applications
Thermal Interface Materials (TIM): Thermal grease, thermal gel, thermal pads
LED Packaging: Improves heat dissipation performance of LED chips and extends service life
5G Communication Materials: Heat dissipation fillers for high-frequency substrates and RF devices
Semiconductor Packaging: Chip bonding materials, EMC (epoxy molding compounds)
New Energy Batteries: Thermal and insulating coatings for power batteries

 

Why Choose Us?
Advanced Spheroidization Process - Prepared by plasma melting method, particles are non-angular with excellent fluidity.
Strict Quality Control - Compliant with RoHS and REACH standards, suitable for high-end electronics industry.
Technical Support - Provides surface modification (silane coupling agent treatment) to optimize dispersibility.
Stable Supply - Supports customized particle size distribution.

 

Packaging and Transportation
Standard Packaging: 25kg/bag, customizable options available.
Transportation: Sea/air freight, global logistics support.

 

Inquiry Tips
For sample testing or technical data sheets (TDS/MSDS), please contact us!
Supports OEM/ODM, product specifications can be adjusted according to customer requirements.

Company Information:

Jiangsu Shengtian New Materials Co., Ltd. has a technical research and development team focusing on ultra-fine powder materials, and has strong strength in the research and development and production of ultra-fine functional materials, composite materials and related applications, and has become a more influential high-tech enterprise in the ultra-fine functional powder industry.
The company's products include crystalline silicon powder, molten silicon powder, soft composite silicon powder, spherical silicon powder, aluminum oxide powder, ceramic powder, glass powder and other ten categories, nearly 100 kinds of different specifications of products, and has a strong modification, compounding and other follow-up deep processing technology and capabilities. The products are processed by special technology, the production technology is leading and innovative, and the introduction of international technical standards for similar products, widely used in electronic packaging, copper clad plate, ink coating, adhesive, ceramics, precision casting, glass fiber, plastic rubber and other industries, giving its functionality while helping customers reduce costs. And provide the overall application of technology solutions.
The company has more than 20 different types of production lines, more than 100 sets of domestic advanced equipment, with an annual output of 50,000 tons. The company adopts professional production and testing equipment and formulates strict production quality control system to conduct all-round control of product quality. All products of the company have passed SGS environmental protection testing, in line with the EU ROHS green environmental protection standards. The company took the lead in the silicon powder industry through the ISO9001 quality management system certification and ISO14001 environmental management system certification, has passed the high-tech product identification. The company's products and solutions have been applied to more than 160 enterprises around the world, including more than 80 customers with stable cooperation for more than 10 years.

Workshop:
 

An excellent manufacturing enterprise

The company has 20 patents, the company has passed ISO9001 and ISO14001 certification, and has been recognized as a national high-tech enterprise