Five main problems of metal hose

The corrosion resistance of stainless steel hose depends on the content of chromium. When the addition of chromium reaches 10.5%, the atmospheric corrosion resistance of steel increases significantly, but when the content of chromium is higher, although the corrosion resistance can still be improved, it is not obvious. The reason is that when alloying steel with chromium, the type of surface oxide is changed to be similar to the surface oxide formed on pure chromium metal. This tightly adhered chromium rich oxide protects the surface from further oxidation. This kind of oxide layer is very thin. Through it, you can see the natural luster of the stainless steel surface, which makes the stainless steel have a unique surface. Moreover, if the surface layer is damaged, the exposed steel surface will react with the atmosphere to repair itself, re form this "passive film" and continue to play a protective role.