Stainless steel is made of ferrochromium alloys mixed with other trace elements. Because of its good metal properties and corrosion resistance compared with other metals, the utensils made are beautiful and durable. Therefore, more and more are used to make tableware, and gradually into the broad family.
Composition of Stainless Steel Material
Stainless steel tableware for family use can be divided into 430, 304 (18-8), 18-10 grades.
430 stainless steel:
Iron + more than 12% of chromium can prevent oxidation caused by natural factors. It is called stainless steel. The code number of JIS is 430, so it is also called 430 stainless steel. However, 430 stainless steel can not resist the oxidation caused by chemical substances in the air, and 430 stainless steel will still be oxidized (rusted) due to non-natural factors after it is not often used for a period of time.
18-8 stainless steel:
Iron + 18% chromium + 8% nickel can resist chemical oxidation. This stainless steel is 304 in Jis code, so it is also called 304 stainless steel.
18-10 stainless steel:
But there are more and more chemical components in the air, and 304 will rust in some places with serious pollution; so some high-grade articles will be made with 10% nickel to make them more durable and corrosion-resistant. This stainless steel is called 18-10 stainless steel. Some tableware instructions are similar to "using 18-10 most advanced medical stainless steel material".
According to metallographic structure, stainless steel can be divided into three categories: austenitic stainless steel, ferritic stainless steel and martensitic stainless steel. The main components of stainless steel are iron, chromium and nickel alloys.
In addition, it contains trace elements such as manganese, titanium, cobalt, molybdenum and cadmium, which makes the stainless steel stable, stainless and corrosion resistance. Austenitic stainless steel due to the particularity of internal molecular structure.