Product Features
01
High Performance
Hangda has developed the internationally highest-grade samarium cobalt alloys, 35 and 35H, with a remanence Br reaching 12kOe and a BH(max) value surpassing 34MGOe. These advancements significantly enhance the performance of end products.
02
High Operating Temperature
Hangda has conducted in-depth research on improving the operating temperature of our products for over 20 years. As a result, we have developed products that can withstand high temperatures up to 550℃ without losing magnetism. Our Aerospace High-Temperature Series Samarium Cobalt Rare Earth Permanent Magnet products provide robust technical support for weight reduction and efficiency improvement in satellites. These achievements have reached the international leading level and have been awarded the First Prize for National Defense Technology Invention.
03
Outstanding Temperature Stability
Our samarium-cobalt permanent magnet products exhibit excellent temperature stability, achieving low remanence temperature coefficients of ≤-0.01% per degree Celsius and ≤-0.02% per degree Celsius.
04
Remarkable Chemical Stability
Our samarium-cobalt permanent magnet products exhibit outstanding chemical stability, showcasing exceptional corrosion and oxidation resistance. They meet the aviation standards for complete oxidation resistance, eliminating the need for additional plating coatings. The samarium cobalt permanent magnets, treated with Harbin Institute of Technology's embedding and infiltration technology, display improved oxidation resistance, making them suitable for specialized fields such as nuclear industry.
Comparison of oxidation mass gain of antioxidant layers of different components
Scanning electron microscope picture of antioxidant layer
05
Weightless rare earth
The developed grades of samarium-cobalt permanent magnet products, such as 35, 35H, 34H, 32H, exhibit magnetic performance comparable to NdFeB grades 35UH to 42EH at operating temperatures ranging from 30 to 130℃. These samarium cobalt magnets offer an alternative solution that reduces reliance on heavy rare earth materials while also offering a price advantage.
Performance comparison of SmCo and NdFeB at different temperatures