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Stainless steel or stainless iron? Tin can making machine

Release date:2019-04-08 Author: Click:


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Stainless steel or stainless iron?Tin can making machine          

316 and 316L stainless steels are molybdenum-containing stainless steels.The molybdenum content of 316L stainless steel is slightly higher than that of 316 stainless steel.Due to the molybdenum in steel, the steel is superior to 310 and 304 stainless steels in overall performance. 316 stainless steels have a wide range of USES under high temperature conditions when the concentration of sulfuric acid is lower than 15% and higher than 85%.316 stainless steel also has good chloride erosion properties, so it is commonly used in Marine environments.The maximum carbon content of 316L stainless steel is 0.03. It can be used for welding purposes where annealing is not possible and where maximum corrosion resistance is required.

1. Corrosion resistance

The corrosion resistance of 316 stainless steel is better than that of 304 stainless steel.In addition, the 316 stainless steel is resistant to Marine and corrosive industrial atmospheres.

In general, 304 stainless steel and 316 stainless steel in terms of chemical corrosion resistance is not much different, but in some specific media under the difference.Initially developed for 304 stainless steel, in particular cases, the material of Pitting Corrosion, Pitting Corrosion) is more sensitive.Adding an additional 2 to 3 percent of molybdenum can reduce this sensitivity, resulting in 316.In addition, these additional molybdenum can reduce the corrosion of certain thermoorganic acids.

316 stainless steel has almost become the standard material in the food and beverage industry.Due to the worldwide shortage of molybdenum and the higher nickel content in 316 stainless steel, 316 stainless steel is more expensive than 304 stainless steel.

2. Heat resistance

316 stainless steel has good oxidation resistance for intermittent service under 1600 c and continuous service under 1700 c.In the range of 800-1575 degrees, it is best not to continuous action 316 stainless steel, but in the temperature range outside the continuous use of 316 stainless steel, the stainless steel has good heat resistance.The carbide resistance of 316L stainless steel is better than that of 316 stainless steel, which can be used in the above temperature range.

3. Heat treatment

Annealing in the 1850-2050 temperature range, then rapid annealing, then rapid cooling.316 stainless steel shall not be hardened by overheating.

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