430 stainless steel has a smooth surface, heat-resistant fatigue, corrosion-resistant acid, alkaline gas, solution and other media. It has high plasticity, toughness and mechanical strength; 201 stainless steel tube has the characteristics of acid resistance, alkali resistance, high density and no pinholes. 201 stainless steel pipes can be mainly used in decorative pipes, industrial pipes, and some shallow-stretched products.
430 stainless steel belongs to martensitic stainless steel. Martensitic stainless steel has the same characteristics of hardening through quenching as ordinary alloy steel. Martensitic chromium stainless steel can increase the ferrite content by increasing the content of chromium under the condition of quenching and tempering. , thus reducing hardness and tensile strength. In the annealed condition of low carbon martensitic chromium stainless steel, the hardness increases as the chromium content increases, while the elongation decreases slightly. Under the condition of a certain chromium content, the increase of carbon content increases the hardness of the steel after quenching, while the plasticity decreases.
After low temperature quenching, the effect of adding 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, a certain amount of nickel can reduce the content of delta ferrite in the steel, so that the steel can obtain the maximum hardness value.
210 stainless steel belongs to chromium-nickel austenitic stainless steel. Austenitic stainless steel is non-magnetic and has high toughness and plasticity, but its strength is low. It is impossible to strengthen it through phase transformation, and can only be strengthened through cold working. Such as adding S, Ca, Se, Te and other elements, 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, etc. If the carbon content in this type of steel is less than 0.03% or contains Ti and Ni, its resistance to intergranular corrosion can be significantly improved. High-silicon austenitic stainless steel with concentrated nitric acid has good corrosion resistance. Due to the comprehensive and good comprehensive properties of austenitic stainless steel, it has been widely used in various industries.
To sum up, 430 stainless steel and 201 stainless steel have their own advantages and advantages. 430 stainless steel is resistant to acid and alkali, and has a strong hardness value. 210 stainless steel has good plasticity and good comprehensive performance. You can choose suitable stainless steel according to your needs. type.