430 stainless steel surface smooth, heat fatigue, acid, alkaline gas, solution and other media corrosion resistance. High plasticity, toughness and mechanical strength; 201 Stainless steel pipe has the characteristics of acid resistance, alkali resistance, high density without pinholes, etc., is the production of various watch cases, strap bottom cover and other high-quality materials. 201 Stainless steel pipes can be used in decorative pipes, industrial pipes, and some shallow drawn products.
430 stainless steel and 201 stainless steel difference
430 stainless steel is martensitic stainless steel, martensitic stainless steel and ordinary alloy steel has the same characteristics of hardening through quenching, martensitic chromium stainless steel in quenching - tempering conditions, increase the content of chromium can increase the ferritic content, thus reducing the hardness and tensile strength. Under annealing conditions, the hardness of low carbon martensitic chromium stainless steel increases with the increase of chromium content, while the elongation decreases slightly. Under the condition of a certain chromium content, the increase of carbon content will increase the hardness of the steel after quenching, and the plasticity will decrease.
After low temperature quenching, the addition effect of molybdenum is very obvious. The main purpose of adding molybdenum is to improve the strength, hardness and secondary hardening effect of steel. In martensitic chromium-nickel stainless steel, the content of δ ferrite in the steel can be reduced by a certain amount of nickel, so that the steel can get the maximum hardness value.
210 stainless steel is chromium-nickel austenitic stainless steel, austenitic stainless steel is non-magnetic and has high toughness and plasticity, but the strength is low, it is impossible to strengthen through phase change, only through cold working to strengthen. If S, Ca, Se, Te and other elements are added, it has good machinability. If it contains Mo, Cu and other elements, it can also resist the corrosion of sulfuric acid, phosphoric acid, formic acid, acetic acid, urea and so on. If the carbon content of such steel is less than 0.03% or contains Ti, Ni, it can significantly improve its intergranular corrosion resistance. High silicon austenitic stainless steel concentrated nitric acid has good corrosion resistance. Because austenitic stainless steel has comprehensive and good comprehensive properties, it has been widely used in all walks of life.
In summary, 430 stainless steel and 201 stainless steel have their own advantages and benefits, 430 stainless steel acid resistance, alkali resistance, hardness value is strong, 210 stainless steel plasticity is good, has good comprehensive performance, can be according to the needs, choose the appropriate type of stainless steel.
Post time: May-30-2024
