About stainless steel
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I would like to ask the teachers: could you tell me about the operating conditions for 304, 321, 316, and 316L? For example, what temperatures can these four types of steel withstand, and which one has the best corrosion resistance? Thank you
321 has the best heat resistance; it can handle 500 degrees without issue. For corrosion resistance, 316L is the best choice; for more details, one should search on Baidu.
Material, Corresponding Foreign Steel Grade, Maximum Service Temperature, Characteristics, Applications: 0Cr18Ni9 304 400 – Low-carbon stainless steel with good resistance to intergranular corrosion and welding properties; used in the chemical, textile, papermaking, soap-making, food processing, nitric acid industry, and nuclear power plants. 1Cr18Ni9Ti 321 800 – Good resistance to intergranular corrosion and excellent welding properties; used for components in nuclear power and reactors, as well as in petrochemical equipment, papermaking, soap-making, and food processing. 0Cr17Ni12Mo2Ti 316 800 – Resistant to tartaric acid, phosphoric acid, and sulfuric acid; has good resistance to intergranular corrosion and excellent welding properties; used in the sulfate industry, paper pulp production, textiles, dye manufacturing, soap-making, pharmaceuticals, and nuclear power plants. 00Cr17Ni12Mo2 316L 800 – Ultra-low carbon stainless steel with better corrosion resistance than 316 and excellent welding properties; same applications as above
Regarding the temperature resistance of stainless steel, a general statement can be made. The corrosion resistance of stainless steel is determined by both the corrosive medium and the temperature; it is impossible to determine whether a particular grade of stainless steel has good or poor corrosion resistance without considering the specific medium involved.
Who knows the prices of these types of steel mentioned by the original poster?
The prices may vary, and they are roughly as follows: 304 – 30-40 per kilogram; 321 – around 50 per kilogram; 316 – approximately 70-80 per kilogram; 316L – about 80-90 per kilogram
Pipes, including tax; industrial fluid pipes with a standard diameter of around DN100, at national standard prices: 1. 304 material, DN100 – 26,000 yuan per ton； 2, 321 DN100: 30,000 yuan per ton ； 3. 316L DN100: 45,000 yuan per ton ；