We are sometimes asked this question, but it is wrong to ask it this way.

We regularly hold sharpening classes, and we use the time while the whetstone is absorbing water to give a lecture on the basics of whetstones and knives before starting the actual sharpening. ”Hagane” is a metal made by heating high purity iron containing about 1% carbon to about 800°C (1000°C for stainless steel) and quenching it with oil or water to make it hard.

”Stainless steel" is a carbon steel that contains more than 13% of a rare metal called chromium.
This chromium is an excellent material that reacts quickly to oxygen and moisture in the air, and is used to produce a transparent film that is invisible to the human eye.
It reacts quickly with oxygen and moisture in the air to form a transparent film that is invisible to the human eye.

As a result, the term "stainless steel" is used to refer to the steel that is shielded from the air and rust does not occur. Therefore, it is wrong to ask, "Does it contain stainless steel?" is incorrect. Many salespeople do not have such knowledge, so they ask, "Does it contain chromium? Many salespeople do not have that kind of knowledge. Many salespeople will be puzzled because they don't have such knowledge.

If you are a salesperson who knows what you are talking about, you will be noticed.

*This is a translation by a translation tool.