Martensitic stainless steel [TOKUSHU KINZOKU EXCEL CO., LTD.]
SUS420J2, RB-S, RB-X
It is a stainless steel that can achieve very high strength and can have a wide range of mechanical properties by adjusting the tempering conditions.
Stainless steel which has a higher Carbon content than ferritic stainless steel, and can be hardened by quenching (heat treatment) to create a martensitic structure. ■SUS420J2 is classified as a martensitic stainless steel, and although it is a stainless steel, can be hardened through quenching and tempering heat treatment. Because of its marketability, price, and usability, it is widely used in various fields. Our annealed finish makes the carbides completely spheroidized, making processing easier and has excellent hardenability. ■RB-S is classified as a martensitic stainless steel, and although it is a stainless steel, can be hardened through quenching and tempering heat treatment. With a higher Carbon content compared to SUS420J2, great hardening occurs during quenching, it has the highest level of hardness among stainless steels. Because it is quite hard even after annealing, less suitable for complex processing, but it is an ideal material for blades. ■RB-X is classified as a martensitic stainless steel, and although it is a stainless steel, can be hardened through quenching and tempering heat treatment. It has superior corrosion resistance than RB-S due to higher Chromium content and addition of Nickel and Molybdenum. Because its Carbon content is slightly lower than RB-S, the hardness after quenching is slightly lower. For more details, please refer to the related links or feel free to contact us.
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basic information
<Materials Handled> - SUS420J2 - RB-S - RB-X <Manufacturing Range> Thickness: 0.050 to 2.5mm Width: 3.0 to 300mm The dimensions, delivery times, and prices that can be accommodated vary depending on the material, so please feel free to contact us.
Price range
Delivery Time
Applications/Examples of results
Knitting needles, osas, spinning machines, doctor blades, cutting tools, straight rulers, soldering irons, spatulas, HDD drive components, bearings, various types of springs.
Line up（3）
| Model number | overview |
|---|---|
| SUS420J2 | This steel type is classified as martensitic stainless steel and is used in a wide range of applications in terms of marketability and price. In the annealed finish state at our company, the carbides are completely spheroidized, making processing easy. |
| RB-S [TOKKIN Original Product] | This steel type is classified as martensitic stainless steel and has a higher carbon content than SUS420J2, resulting in significant hardening upon quenching and achieving the highest level of hardness among stainless steels. It is quite hard even in the annealed finish, making it unsuitable for complex processing, but it is an optimal material for cutting tool applications. |
| RB-X [TOKKIN Original Product] | RB-X is a stainless steel that has a higher carbon (C) content, allowing it to be hardened through quenching and tempering heat treatment. It has a higher chromium (Cr) content than RB-S and possesses excellent corrosion resistance by adding nickel (Ni) and molybdenum (Mo). Due to its slightly lower carbon content compared to RB-S, the hardness after quenching is somewhat reduced. |
Company information
TOKKIN's materials are everywhere around you, even though you can't see them! TOKKIN is a precision metal materials manufacturer founded in 1940. We produce high-quality, high-value-added materials according to the each customer specifications, such as processing metals into thin strips or sheets by cold rolling to improve mechanical properties, cladding different materials to form a single material, and applying resin or solder to metal surfaces. Our materials are used in a wide range of products, from daily life gadgets such as smart devices, PCs, automobiles, and game consoles to industrial equipment such as semiconductor manufacturing equipment, medical equipment, and textile machinery. Although our material is mostly invisible, it plays an indispensable role in ensuring that the products and their supporting components function well. High-functional materials, made possible only by TOKKIN, support the technologies that are created one after another behind the scenes.