Why is cast iron corrosion resistant than steel?
Steel is mainly iron, containing a small amount of carbon! Galvanic reactions occur in humid environments! Corrode.
Cast iron is also mainly iron, and a small amount of carbon, but there are some other ingredients! (such as silicon, manganese, phosphorus, nickel, chromium, molybdenum, copper, aluminium, boron, vanadium, tin, etc.)
Special properties can be obtained by adding special proportions! Not all cast iron is more resistant to corrosion than steel. Only by adding a special component proportion that can make it resist corrosion, can the corrosion resistance be achieved. Specific about its corrosion resistance, BAIDU or GOOGLE should be found below.
