SUS 410 Stainless Steel: Japan’s JIS-Standard Martensitic Solution for Precision Applications
SUS 410 is the Japanese Industrial Standard (JIS) designation for a martensitic stainless steel, equivalent in composition to the international 410 grade but adhering to Japan’s rigorous quality and performance norms. A defining characteristic of SUS 410 is its precise chemical control: 11.5-13.5% chromium, 0.15% max carbon, 1.00% max manganese, and strict limits on sulfur (0.030% max) and phosphorus (0.040% max). This precision ensures consistent mechanical properties—minimum yield strength of 275 MPa, tensile strength of 480 MPa—and reliable corrosion resistance to mild atmospheres and non-aggressive liquids. Like 410, it is magnetic and heat-treatable, but JIS standards add extra quality checks, such as ultrasonic testing for internal defects and dimensional accuracy controls, ensuring uniformity across batches.
The main function of SUS 410 is to deliver high-performance, consistent results in precision-driven industries where JIS compliance is mandatory. Its advantages lie in its quality assurance: unlike generic 410 grades, SUS 410 undergoes third-party certification to meet JIS G4303 standards, reducing the risk of material failure in critical applications. It also offers excellent weldability when using matching fillers, though post-weld heat treatment is recommended to restore corrosion resistance and reduce residual stress. Additionally, its refined surface finish (achievable through polishing) makes it suitable for aesthetic applications where both function and appearance matter.
SUS 410 finds extensive use in Japan’s automotive sector for high-precision components like fuel injection parts and transmission shafts, where JIS compliance ensures compatibility with strict assembly tolerances. It is also a top choice in the electronics industry for magnetic cores and sensor housings, leveraging its magnetic properties and dimensional accuracy. In the medical field, it is used for dental instruments and low-stress surgical tools, as its controlled composition minimizes biocompatibility risks. Other applications include kitchen appliances (e.g., knife blades, sink drains) in Japanese households, where its corrosion resistance to soap and water, combined with a polished finish, aligns with consumer demands for durability and aesthetics.
The main function of SUS 410 is to deliver high-performance, consistent results in precision-driven industries where JIS compliance is mandatory. Its advantages lie in its quality assurance: unlike generic 410 grades, SUS 410 undergoes third-party certification to meet JIS G4303 standards, reducing the risk of material failure in critical applications. It also offers excellent weldability when using matching fillers, though post-weld heat treatment is recommended to restore corrosion resistance and reduce residual stress. Additionally, its refined surface finish (achievable through polishing) makes it suitable for aesthetic applications where both function and appearance matter.
SUS 410 finds extensive use in Japan’s automotive sector for high-precision components like fuel injection parts and transmission shafts, where JIS compliance ensures compatibility with strict assembly tolerances. It is also a top choice in the electronics industry for magnetic cores and sensor housings, leveraging its magnetic properties and dimensional accuracy. In the medical field, it is used for dental instruments and low-stress surgical tools, as its controlled composition minimizes biocompatibility risks. Other applications include kitchen appliances (e.g., knife blades, sink drains) in Japanese households, where its corrosion resistance to soap and water, combined with a polished finish, aligns with consumer demands for durability and aesthetics.