They significantly reduce residual magnetism after processing and greatly expand the possibilities for deep drawing.

TOKYO--(BUSINESS WIRE)--Oct. 21, 2025

NIPPON KINZOKU CO., LTD. (TOKYO: 5491) (Headquarters: Minato-ku, Tokyo) is now strengthening sales of its stainless steel “NK-305 Series”, which achieves both low permeability (non-magnetic) and high deep-drawing formability, as the sixth installment in its environmentally conscious “Eco-Product” lineup.

This product addresses market needs such as improving the reliability of electronic components and supporting the increasing complexity of automotive parts. It contributes to enhancing performance and improving the productivity of our customers' products.

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Our proprietary equipment, designed with accumulated cold rolling expertise, and the industry-leading proprietary technologies developed by it, meet all your needs.

Development Background

In recent years, with the miniaturization and higher density of electronic devices and the lightweighting of automobiles, the metal materials used are increasingly required to simultaneously achieve higher levels of both low permeability properties that resist magnetization even after processing and deep drawability that enables the formation of complex shapes. However, achieving both of these properties simultaneously has been a difficult challenge with conventional stainless steel.

To meet these market needs, our company has developed the “NK-305 Series” using proprietary technology. We offer two steel grades that deliver optimal performance tailored to specific applications.

Features and Benefits of the NK-305 Series

1. NK-305S: Extremely low permeability for enhanced reliability of electronic components

It significantly suppresses the generation of magnetism during heavy processing, achieving properties that surpass those of SUS316 - a common low-permeability stainless steel. This makes it ideal for camera modules and various sensor components where magnetic interference must be minimized, contributing to the prevention of product malfunctions. Furthermore, cost reduction is possible by replacing SUS316 with NK-305S.

(Example applications: camera components, mobile device components, etc.)

2. NK-305Y: Excellent deep drawing properties improve productivity for complex-shaped parts

Exceptionally soft with excellent elongation, it handles demanding deep drawing processes. It facilitates forming complex automotive parts and other shapes that were previously difficult to manufacture, significantly contributing to improved processing efficiency and yield in customer production.

(Examples of applications: automotive parts, electronic component enclosures, etc.)

Click here for more details.

https://www.nipponkinzoku.co.jp/assets/images/2025/10/Newly-Expanding-Sales-of-the-NK-305-Series.pdf

Steel Strip Products Overview

https://www.nipponkinzoku.co.jp/en/corporate-profile/business/cold-rolled-stainless-steel-strip

About NIPPON KINZOKU Group

Our products have been used in a range of areas from the precision field to the construction industry. https://www.nipponkinzoku.co.jp/en/

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Contact:

NIPPON KINZOKU CO., LTD. Production Process & Support Department
TEL: +81-3-5765-8113
https://www.nipponkinzoku.co.jp/en/inquiry