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How Chromium helps in Cast Iron ?

Chromium acts as a carbide stabilizer in cast iron. Thus it intensifies chilling of cast Iron , Increases strength , hardness and wear - resistance and is conductive to fine grain structure. Most additions of chromium range from 0.15 to 0.90 percent with or without other alloying elements. Chromium of 1.0 percent or more make castings hard to machine. With 3.0 percent chromium, white cast iron is formed. Special Irons to resist corrosion and high temperatures contain as much as 35 percent chromium.







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