The domestic brand of 304 stainless steel is 0Cr18Ni9, which belongs to austenitic stainless steel and is generally used in electromagnetic environment. No magnetic, no heat. Austenitic stainless steel: Austenitic stainless steel at room temperature. When the steel contains about 18% of Cr, 8% to 10% of Ni, and about 0.1% of C, it has a stable austenite structure. Austenitic chromium-nickel stainless steels include the famous 18Cr-8Ni steel and high Cr-Ni series steels developed on the basis of increasing Cr and Ni contents and adding Mo, Cu, Si, Nb, Ti and other elements. Austenitic stainless steels are non-magnetic and have high toughness and plasticity, but they have low strength and cannot be strengthened by phase transformation. They can only be strengthened by cold working. Such as adding S, Ca, Se, Te and other elements, it has good free-cutting properties. In addition to corrosion of such oxidation-resistant acid media, such steels may contain elements such as Mo and Cu that are resistant to corrosion by sulfuric acid, phosphoric acid, and formic acid, acetic acid, and urea. If the carbon content of such steel is less than 0.03% or contains Ti, Ni, it can significantly improve its resistance to intergranular corrosion. High-silicon austenitic stainless steel concentrated nitric acid may have good corrosion resistance. Because austenitic stainless steel has comprehensive and good comprehensive performance, it has been widely used in various industries.
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