In daily life, we often see products made of stainless steel, so what is stainless steel? Whats inside the stainless steel? This article will introduce in detail the characteristics, type, grades, chemical composition, property and application, material specifications and other information about stainless steel.
What Is Stainless Steel
Stainless steel, also known as stainless acid-resistant steel, is a ferroalloy material with excellent rust resistance, corrosion resistance and formability. It has a variety of surface treatments, and in the production process, it has good heat treatment performance, good processing performance, high efficiency, and has the best fire resistance among all metal materials. And stainless steel is widely used in the fields of electrical appliances, daily necessities and heavy industry.
Stainless Steel Characteristics
1.Excellent corrosion resistance and rust resistance in various corrosive media
2.The surface is smooth, bright, bright and beautiful, easy to clean
3.Good wear resistance, heat resistance, oxidation resistance and welding performance
4.Easy plastic processing, good polishing
5.Anti-fatigue, high strength, high toughness
6.Good durability and long service life
7.High temperature and low temperature resistance
8.Excellent thermal expansion performance and thermal insulation performance
Stainless Steel Type
According to the crystal structure of stainless steel, it can be divided into five types:
(1) Austenitic stainless steel
Included models are: AISI 201, 202, 301, 301L, 304, 309s, 310s, 316L and other models.
(2) Martensitic stainless steel
The models included are: AISI 410, 414, 416, 416(Se), 420, 431, 440A, 440B and other models.
(3) Ferritic stainless steel
Included models are: AISI 409, 430, 430Ti, 433, 434, 436, 439, 441 and other models.
(4) Austenitic-ferritic duplex stainless steel
The models included are: AISI 255, 329, 2205, S31500, S31803, S31200 and other models.
(5) Precipitation hardened stainless steel
The models included are: 630, 0Cr17Ni4Cu4Nb, 0Cr17Ni7Al, 0Cr15Ni25Ti2MoVB and other models.
