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Stainless Steels
Martensitic
Stainless Steels
Quenching and Tempering
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.
This grade is best suited for wear-resistant stainless steel applications, and can be used for heat-resistant applications due to its high tempering resistance.
(2) Less Mechanical and Physical Anisotropy
Due to the effect of microstructural transformation, it has less mechanical and physical anisotropy than austenitic spring materials that are hardened by cold rolling.
(3) Make thickness and width smaller.
Due to being a martensitic stainless steel, it has a higher Young's modulus compared to non-ferrous or austenitic stainless steels for springs. This allows the thickness and width of leaf springs to be reduced.
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.
Main features of RB-S:
(1) Suitable for Wear and Heat Resistant Applications.This grade is best suited for wear-resistant stainless steel applications, and can be used for heat-resistant applications due to its high tempering resistance.
(2) Less Mechanical and Physical Anisotropy
Due to the effect of microstructural transformation, it has less mechanical and physical anisotropy than austenitic spring materials that are hardened by cold rolling.
(3) Make thickness and width smaller.
Due to being a martensitic stainless steel, it has a higher Young's modulus compared to non-ferrous or austenitic stainless steels for springs. This allows the thickness and width of leaf springs to be reduced.
Stainless Steels
Martensitic
Stainless Steels
Quenching and Tempering
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.
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.
Stainless Steels
Martensitic
Stainless Steels
Heat Resistance
Quenching and Tempering
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.
This grade is best suited for wear-resistant stainless steel applications, and can be used for heat-resistant applications due to its high tempering resistance.
(2) Less Mechanical and Physical Anisotropy
Due to the effect of microstructural transformation, it has less mechanical and physical anisotropy than austenitic spring materials that are hardened by cold rolling.
(3) It allows for savings in thickness and width.
Due to being a martensitic stainless steel, it has a higher Young's modulus compared to non-ferrous or austenitic stainless steels for springs. This allows the thickness and width of leaf springs to be reduced.
TOKKIN supplies a variety of stainless steels for springs as specified in JIS G4313.
Please refer to this page for the features and comparison of each grade of stainless steel for springs.
Our annealed finish makes the carbides completely spheroidized, making processing easier and has excellent hardenability.
Main features of SUS420J2:
(1) Suitable for Wear and Heat Resistant Applications.This grade is best suited for wear-resistant stainless steel applications, and can be used for heat-resistant applications due to its high tempering resistance.
(2) Less Mechanical and Physical Anisotropy
Due to the effect of microstructural transformation, it has less mechanical and physical anisotropy than austenitic spring materials that are hardened by cold rolling.
(3) It allows for savings in thickness and width.
Due to being a martensitic stainless steel, it has a higher Young's modulus compared to non-ferrous or austenitic stainless steels for springs. This allows the thickness and width of leaf springs to be reduced.
TOKKIN supplies a variety of stainless steels for springs as specified in JIS G4313.
Please refer to this page for the features and comparison of each grade of stainless steel for springs.
