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1 Nov 2009, 1:49 PM
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| Junior Member  HSC: 2009 Gender: Female
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11 Nov 2009, 10:48 PM  | Steel composition.. quick question You can hide this advertisement by registering. Can someone quickly tell me the connection between the amount of carbon in a steel and the rate at which it corrodes.. I'm guessing it'smore carbon -> more cathodic sites -> corrodes quicker Is that right??
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1 Nov 2009, 2:11 PM
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| <3 Prophet 9 AyyyTAR Hater  HSC: 2009 Gender: Female Location: Sydney
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Today, 2:25 PM  | Re: Steel composition.. quick question Yes, you are correct. In fact, my teacher said if you have pure iron it doesn't rust at all. Some examples are pure Iron meteorites and some famous buildings whose name escapes me now  More carbon makes steel stronger but also less malleable (more brittle)
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1 Nov 2009, 2:40 PM
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| Junior Member HSC: 2009 Gender: Female
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11 Nov 2009, 10:48 PM | Re: Steel composition.. quick question Thanks heaps for the quick reply! =) That's what I thought, but I just read over a prac (the first one on shipwrecks) and it said that the steel corroded more than the iron. If iron contains more carbon than steel, why did the steel corrode quicker? It was in the Success One book.
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1 Nov 2009, 2:45 PM
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| <3 Prophet 9 AyyyTAR Hater HSC: 2009 Gender: Female Location: Sydney
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Today, 2:25 PM | Re: Steel composition.. quick question Quote:
When they say iron, they mean pure iron (as close to pure iron as you can get). Steel is the alloy - it is the mixture of mainly Iron with some carbon. So as you can see, there's more carbon in steel because the iron shouldn't contain carbon at all 
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