Application and properties of 304 stainless steel wire, 304 stainless steel bar, according to United States AISI standard, stainless steel with three-digit Arabic numeral. First-digit categories, second to third-digit sequence number. First digit 3 opening 300-series stainless steel is Cr-Ni structure of austenitic stainless steel.
1, 304
Low carbon austenitic stainless and acid-resistant steels
Properties: excellent resistance to intergranular corrosion and corrosion resistance, of organic acids and inorganic acids alkalis and most have a certain resistance to corrosion. Usage: widely used in pipe conveying acid and chemical equipment.
2、304L
Low carbon austenitic stainless and acid-resistant steels
Performance: good resistance to corrosion and good in various strong corrosive medium corrosion resistance. Application: applied to petrochemical corrosion-resistant equipments, particularly post weld heat treatment of the welded fitting is not possible.
3、304H
Austenitic stainless steel
Performance: excellent corrosion resistance and weldability, good thermal properties. Uses: mainly used for large boiler superheater and reheater steam piping, heat exchangers for petrochemical.
4, 316
Austenitic stainless and heat resistant steel
Performance: various inorganic acids, organic acids, alkalis, salts have very good corrosion resistance and corrosion resistance, good strength at high temperatures. Use: suitable for large boiler superheater and reheater, steam pipes, heat exchangers for petrochemical pipes, can be used as a corrosion resistant material.
5、316L
Ultra low carbon austenitic stainless and acid-resistant steels
Performance: good resistance to corrosion, to organic acids, alkali, salts, with good corrosion resistance. Usage: widely used in pipe conveying acid and chemical equipment.
6, 321
Austenitic stainless and acid-resistant steels
Performance: high Hang Jing and corrosion, of organic acids and inorganic acids with good corrosion resistance. Uses: used in the manufacture of acid-proof pipes, boiler superheater, reheater, steam pipes, heat exchangers for petrochemical and other.
7、317L
Austenitic stainless and acid-resistant steels
Performance: excellent corrosion resistance, in solutions containing chloride has a good resistance to pitting. Usage: manufacture of synthetic fiber, petrochemical, textile, paper and the main pipeline used in nuclear reprocessing and other industrial equipment.
8、310S
Austenitic heat-resisting steel
Performance: good resistance to intergranular corrosion, excellent resistance to chloride stress corrosion, have good resistance to high temperature oxidation. Uses: used in the manufacture of furnace tubes, superheater, heat exchanger tubes.
9、347H
Austenitic stainless and heat resistant steel
Performance: has good corrosion resistance, weldability and creep strength properties. Use: for large boiler superheater and reheater, steam pipes, heat exchangers for petrochemical pipes.