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 **1, **2, **1, **1L, **4, **9s, **0s,
**6L and other models.
(2) Martensitic stainless steel
The models included are: AISI **0, **4, **6, **6(Se), **0, **1,
**0A, **0B and other models.
(3) Ferritic stainless steel
Included models are: AISI **9, **0, **0Ti, **3, **4, **6, **9, **1
and other models.
(4) Austenitic-ferritic duplex stainless steel
The models included are: AISI **5, **9, ***5, S****0, S****3,
S****0 and other models.
(5) Precipitation hardened stainless steel
The models included are: **0, 0Cr*7Ni4Cu4Nb, 0Cr*7Ni7Al,
0Cr*5Ni*5Ti2MoVB and other models.