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Difference between cast iron and high carbon steel?
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[QUOTE="caters, post: 6000753, member: 501462"] I don't understand the difference between cast iron and high carbon steel. They both are an iron-carbon alloy and they both have a high amount of carbon within the iron metal. Both will oxidize at the same rate without a coating to protect the metal. Stainless steel will oxidize, it just takes way longer for it to happen. And I have seen both black rust and red rust forming on stainless steel and I know the difference between the 2 is the ratio of iron to oxygen. But anyway, back to cast iron and high carbon steel. Both are very strongly magnetic compared to martenistic stainless steel(which is the most magnetic stainless steel there is) The only real difference I have seen is that cast iron is more brittle and is always seasoned to prevent iron oxide from forming, whereas high carbon steel isn't nearly as brittle and isn't seasoned. But why is there that difference when the amount of carbon is high in both, magnetism is strong in both unless it is treated to be demagnetized, and both will oxidize at the same rate if not seasoned? I have heard that with steel, they blow oxygen into the furnace but for cast iron they just melt the iron without blowing oxygen into it. But how does some extra oxygen make any difference? Does it oxidize the carbon? Does it oxidize the iron? What difference does that oxygen make that makes cast iron more brittle than high carbon steel when the ratio of iron to carbon is the same or at least similar? [/QUOTE]
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Difference between cast iron and high carbon steel?
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