430 stainless steel:

Chromium, which accounts for more than 12% of iron, can prevent oxidation caused by natural factors and is called stainless steel. Its code name in JIS is 430, hence it is also known as 430 stainless steel. However, 430 stainless steel cannot resist oxidation caused by chemicals in the air. Even after a period of infrequent use, 430 stainless steel may still experience oxidation (rusting) due to non natural factors.

18-8 Stainless Steel:

Iron is 18% chromium and 8% nickel, which can resist chemical oxidation. This stainless steel is designated as 304 in JIS code, hence it is also known as 304 stainless steel.

18-10 Stainless Steel:

But the chemical composition in the air is increasing, and in some heavily polluted areas, even 304 may rust; So some high-end products are made with 10% nickel to make them more durable and corrosion-resistant. This type of stainless steel is called 18-10 stainless steel. In some tableware instructions, there is a statement similar to 'using the most advanced medical grade stainless steel material of 18-10'.

Stainless steel can be divided into three categories based on metallographic structure: austenitic stainless steel, ferritic stainless steel, and martensitic stainless steel. The main components of stainless steel are iron, chromium, and nickel alloys, as well as trace elements such as manganese, titanium, cobalt, molybdenum, and cadmium, which make stainless steel stable in performance, non rusting, and corrosion-resistant. Austenitic stainless steel is not easily magnetized due to its unique internal molecular structure.