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What is “ 5 - layer iron core structure ”?

The pot is made of laminated composite material featuring a 5-layer iron core structure, which is to add a layer of special soft steel (iron) of fine heat conductivity to be between 2 layers of stainless steel containing 18% chromium and 10% nickel, which are both types of stainless steel of good durability and corrosion resistance.
This structure utilizes the fine heat conductivity of iron, durability and corrosion resistance of stainless steel, also integrates the features of being light-weight and easy maintenance, bringing all the functionality and usability to the paramount.

Quality standard based 18-10 stainless steel (JIS G-4305) in Japan

The 18-10 stainless steel (JIS G-4305) on the inner and outer of the 5-layer iron core structure contains 18% chromium and 10% nickel, providing better corrosion resistance than 18-8 stainless steel, capable of effectively eliminating corrosion risks posed by components like hydrochloric acid from seasonings and food.

The steel materials for the pot are all in compliance with the quality standards in Japan (JIS Japanese industry standard), no harm substances contained, so people can use with ease.

Special soft steel (iron) (JIS G-3141SPCE) layer with outstanding heat conductivity

Layer treatment between stainless steel and special soft steel (iron) (JIS G-3141SPCE) combines the fine heat retention feature of the stainless steel and the superior heat conductivity of iron, ensuring the pot with proportional heat when heating. In addition, the magnetic force of the iron core can also ensure that heat sources such as fuel and inductive heating can be used for heating the pot.

Composite processing, incorporating the cutting edge technology in Japan

The pot utilizes a structure that incorporates special soft steel (iron) layer into 2 layers of 18-10 stainless steel, which features solid durability and corrosion resistance. In addition, in order to prevent 18-10 stainless steel from any possible corrosion by carbon element (contained in special soft steel or iron), 2 layers of nickel foil are added between 18-10 stainless steel and special soft steel (iron).

With materials of better quality, thinner sized pots are produced, therefore, excellent heat conductivity and corrosion resistance is joined by an added feature of being easy to use.

Various pots produced by our company, whether they are designed for heating purposes or cooking, as well as the materials used and the convenience the pots can deliver are of superior quality. They are destined to be your ideal companion on a daily basis.
Yoshikawa Corporation
Head Office: No.635-3 Ohdo, Yahiko Niigata-Pref. 959-0308
Tokyo Branch: 2F, Ryogoku-Sanwa Bldg., No.21-4, 4-Chome, Ryogoku, Sumida-Ku, Tokyo, Japan 130-0026
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