Several major stainless steel materials are mainly used

Many fickle factors indicate the characteristics of corrosive media, namely chemicals and their concentration, atmospheric conditions, temperature, time, so if you do not know the correct nature of the medium, to use the material, the choice of materials is difficult. However, the following can be used as a guide for selection.

Type 304 widely used materials. It can withstand general rust and corrosion in construction, resist food processing media leaching (but corrosion may occur at high temperature states containing concentrated acid and chloride components), and resist organic compounds, dyes, and a wide variety of inorganic compounds.

Type 304L (low carbon), good resistance to nitric acid, and durable medium temperature and concentration of sulfuric acid, widely used as liquid gas storage tanks, used as low temperature equipment (304N), appliances other consumer products, kitchen equipment, hospital equipment, transportation, wastewater treatment devices.

Type 316 contains slightly more nickel than type 304 and contains 2%─3% molybdenum, corrosion resistance is better than type 304, especially in chloride media that tend to cause pitting corrosion. type 316 has been developed for use as sulfite pulpers because it is durable sulfuric acid compounds. Moreover, its use has been expanded to handle many chemicals in the processing industry.

Type 317 contains 3%-4% molybdenum (also the higher level obtained in this series) and contains more chromium than Type 316, providing higher resistance to pitting and crevice corrosion.

Type 430 is lower in alloy than Type 304 and is used for highly polished decorative applications in mild atmospheres, as well as in nitric acid and food processing equipment.

Type 410 has the lower alloy content of the three general-purpose stainless steels and is selected for high strength parts requiring a combination of strength and corrosion resistance, such as strong parts. 410 is resistant to corrosion in mild atmospheres, water vapors, and many mild chemical product media.

Type 2205 is superior to Types 304 and 316 because he has high resistance to chloride stress corrosion cracking and has approximately twice the strength.

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