SPRON510 is a proprietary alloy developed in collaboration with the Institute for Materials Research, Tohoku University, originally for mainsprings used in mechanical watches.

Strong, corrosion-resistant, and highly resilient, SPRON510 combines high strength, excellent spring-back characteristics, superior corrosion resistance, and non-magnetic properties. Even in harsh operating environments, it minimizes changes in spring performance and delivers stable, repeatable operation over extended periods.

SPRON510 combines four key advantages—high strength, excellent resilience, superior corrosion resistance, and non-magnetic properties—delivering a level of performance unattainable with conventional metal materials. For more detailed specifications and application examples, please refer to the banner above.

SPRON510 is a proprietary metal alloy developed by our company, primarily composed of cobalt (Co) and nickel (Ni). As shown in the table, it exhibits outstanding properties.

SPRON510 is widely used in components operating under demanding environments, including medical devices, precision machinery, and semiconductor-related applications. Combining excellent strength, resilience, corrosion resistance, and non-magnetic properties, it enables extended service life and high reliability, delivering proven value to manufacturing operations.

SPRON510 is processed based on customers’ drawings and delivered directly as finished products or components. We propose optimal solutions to address customer challenges and provide a wide range of custom-made products.