According to the definition in GB/T20878-2007, it is a steel with stainless steel and corrosion resistance as the main characteristics, and the chromium content is at least 10.5%, and the carbon content is not more than 1.2%.

Stainless steel is the abbreviation of stainless and acid-resistant steel. The steel that is resistant to weak corrosive media such as air, steam, and water or has stainless steel is called stainless steel. The steel grade is called acid-resistant steel.

1

According to the workmanship

Electroplating: A process in which a metal film is attached to the surface of a metal or other material by electrolysis. It can prevent corrosion, improve wear resistance, electrical conductivity, reflectivity and enhance aesthetics.

Water plating: a process method that does not rely on external power supply in aqueous solution, and relies on the reducing agent in the plating solution to carry out chemical reduction reaction, so that metal ions are continuously reduced on the autocatalytic surface to form a metal coating.

Fluorocarbon paint: refers to the paint with fluororesin as the main film-forming substance; also known as fluorocarbon paint, fluorocoating, fluororesin paint.

Spray paint: spray paint with compressed air into a mist on the stainless steel plate to form different colors.

2

By organization

Ferritic stainless steel: 15% to 30% chromium. Its corrosion resistance, toughness and weldability increase with the increase of chromium content, and its resistance to chloride stress corrosion is better than other types of stainless steel.

Austenitic stainless steel: contains more than 18% chromium, and also contains about 8% nickel and a small amount of molybdenum, titanium, nitrogen and other elements. It has good comprehensive performance and is resistant to corrosion by various media.

Martensitic stainless steel: high strength, high strength, hardness and wear resistance, but poor corrosion resistance, plasticity and weldability.

Precipitation hardening stainless steel: the matrix is austenite or martensitic structure, and the commonly used grades of precipitation hardening stainless steel are 04Cr13Ni8Mo2Al and so on. It is able to harden (strengthen) stainless steel by precipitation hardening (also known as age hardening).