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

Unique Technologies/High Performance Materials

Unique Technologies

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

Overview & Features

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.

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

Physical Properties

Annealed Condidtion

Density

7.92 g/cm³

Specific Heat

461 J/(kg・K)

Electrical Resistivity

79 μΩ・cm

Thermal Expansion

15.2×10^-6/K (25～100℃)

Thermal Conductivity

15.4 W/(m・K) (100℃)

Mechanical Properties

TOKKIN 350 JIN has both high strength and high ductility.
Specifications and typical values of mechanical properties are shown in the table below.
Tensile testing video comparing TOKKIN 350 JIN with common SUS301 is available on this page.

Corrosion resistance

TOKKIN 350 JIN has higher corrosion resistance than SUS316L.

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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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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Precipitation Hardening Stainless Steels

These grades were developed with the concept of steels that are easy to form like austenitic stainless steels, and provide high strength like that of martensitic stainless steels.

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Related Products

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

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.

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TOKKIN™ 350 | Precipitation Hardening Stainless Steel

TOKKIN™ 350 is a Cr-Ni-Mo stainless steel. In solution heat-treated and annealed conditions, it boasts excellent workability and high strength by heat treatment.
Compared to other precipitation hardening stainless steels, the addition of Molybdenum provides superior corrosion resistance and oxidation resistance, and the absence of Aluminum and Titanium provides good weldability. It also has excellent yield strength and cyclic fatigue strength, and is used for bellows, diaphragms, actuation valves, etc. which require long life under cyclic stress.

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