TOKKIN™ 301 JIN™ | High-Strength and High-Ductility Stainless Steel

Unique Technologies/High Performance Materials

Unique Technologies

TOKKIN™ 301 JIN™ | High-Strength and High-Ductility Stainless Steel

Overview & Features

By applying our proprietary "JIN™" process to SUS301 material, we have achieved high strength, excellent workability that cannot be obtained with ordinary manufacturing methods.

The surface treatment with our proprietary technology dramatically improves the surface corrosion resistance compared to the conventional SUS301.

Main features of TOKKIN 301 JIN:

(1)Achieving high strength and high ductility simultaneously.
Typical values: Yield Strength(Ys) over 1400 MPa & Elongation(El) over 20%

(2)Surface Corrosion Resistance far Superior to Ordinary SUS301

This material can meet the needs of customers who want to improve workability while maintaining the same strength as SUS301, who don't want to change material composition, or who want to omit precipitation hardening heat treatment of SUS631 or SUS632J1.

Product information dowlnload data sheet or more details on this page.

Examples of Applications

Vibration Motors/Haptics, Hinges, Tact Switches/Membrane Switches

Available Shapes

Manufacturable Range (COIL, SHEET)

Thickness

0.030-0.60mm

Width

3.0-300mm

Length

COIL or SHEET less than 2000mm

This is the manufacturing range of coils and sheets we manufacture.

Chemical Composition

Physical Properties

Mechanical Properties

Corrosion resistance

Related Pages

Chemical Composition

Chemical composition is in accordance with JIS SUS301.

Physical Properties

Density

7.93 g/cm³

Specific Heat

502 J/(kg・K)

Electrical Resistivity

72 μΩ・cm

Young's Modulus

193 GPa

Thermal Expansion

16.9×10^-6/K（0～100℃）

Thermal Conductivity

16.3 W/(m・K)

Melting Range

1380-1420 ℃

Magnetism

Weak magnetic

Mechanical Properties

TOKKIN 301 JIN has both high strength and high ductility, and has higher elongation than SUS301 having equivalent yield strength.
The table below shows reference specifications and typical values. Please contact us for specifications.

Corrosion resistance

Surface Corrosion Resistance far Superior to Ordinary SUS301.

Related Pages

High-Strength, High-Ductility
JIN™

"TOKKIN's uniquely designed production method for JIN™ brings you a material that combines high strength and excellent workability that cannot be obtained with ordinary manufacturing methods. The balance of Yield stress (YS) exceeds 35,000 MPa x Elongation (EL) is among the highest in the world."

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Ultrafine Grain Stainless Steel
nanoSUS™

nanoSUS™ a stainless steel in which the crystal grain size of the material is refined to about 1μm. The control of microstructure contributes to improving various properties such as strength, fatigue properties, and workability."

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Stainless Steels for Springs

This materials are possible to increase their hardness by rolling, they can be used as spring parts.

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Related Products

TOKKIN™ 350 JIN™ | High-Strength and High-Ductility Stainless Steel

By applying our proprietary "JIN™" process to our own grade TOKKIN 350 material, we have achieved high strength, excellent workability, and high reliability that cannot be obtained with ordinary manufacturing methods.

Main features of TOKKIN 350 JIN:

(1)Both High Strength and High Ductility
Typical values: Yield Strength(Ys) over 1500 MPa & Elongation(El) over 20%

(2)Low Mechanical Anisotropy
Greater flexibility in part design and stamping

(3)No Heat Treatment required after processing
Dimensional changes due to heat treatment are eliminated and dimensional accuracy is stabilized.

(4)Higher corrosion resistance than SUS316L
This material can meet the needs of customers who want to improve workability while maintaining the same strength as SUS301, or who want to omit precipitation hardening heat treatment of SUS631 or SUS632J1.

Dowlnload data sheet or more details on this page.

Learn More

SUS301 | Austenitic Stainless Steel

SUS301 is a steel grade in which Chromium and Nickel are reduced from a typical austenitic stainless steel grade SUS304, so that it can be easily hardened by processing. Full hard finished materials such as EH and SEH, have extremely high strength equivalent to hardened materials by only cold rolling.
It is an ideal material for spring parts uses that require durability, such as spiral springs and membrane switches. In addition, its properties of austenitic stainless steel allow the product to be used in a variety of environments without plating to prevent rust.

We supply 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.

Learn More