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What is the role of the elements in the stainless steel decorative tube
The stainless steel decorative tube is composed of multiple elements, and these elements have a relatively large impact on the performance of the stainless steel decorative tube.
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2. Molybdenum
The molybdenum element in the 316L stainless steel decorative pipe has the effect of improving the corrosion resistance and stabilizing the material properties.
The corrosion resistance of the stainless steel decorative pipe is due to the chromium-rich passivation protective film formed by chromium oxide on its surface. In a reducing medium, the passive film on the surface of the stainless steel decorative pipe will be corroded and damaged, making the stainless steel decorative pipe from The passivated state becomes the activated state.
Therefore, the corrosion resistance of stainless steel decorative pipes in reducing media is reduced, and localized corrosion is prone to occur. However, adding an appropriate amount of molybdenum element can promote the passivation of the stainless steel surface and enhance the pitting corrosion and crevice corrosion resistance of the stainless steel decorative pipe in reducing media.
The role of molybdenum in the stainless steel decorative tube is equivalent to three times that of chromium.
The addition of 2%-3% of molybdenum elemental chromium-nickel austenitic stainless steel can not only effectively improve the corrosion resistance of austenitic stainless steel to dilute sulfuric acid, organic acid, hydrogen sulfide and other corrosive media, but also improve the resistance to chlorine Ionic media has corrosion resistance and has good creep strength at high temperatures.
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