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alloy steels

Posted by Henry on March 22nd, 1998 10:21 PM
In reply to CRAFTSMAN HANDTOOLS/ WRENCHES by Keith on March 22nd, 1998 04:59 PM [Go to top of thread]

Keith, not all steels are alloy steels. Steel consists of a little carbon (.04% or more), phosphorus and sulfur (hopefully, .08% total or less, which is basically dirt and difficult to get out) and the balance iron. As a matter of fact, it is hard to remove carbon to lower than .20% or so. Such elements as chrome, nickel, manganese, molybdenum occur as traces and are added to make alloy steel. Other elements like copper and arsenic also occur as traces and are detrimental in most cases. What elements are added and subsequent heating and cooling determine the end properties of the material. There are a multitude of different recipes for steel, depending on the mechanical properties you are trying to attain. A high carbon, high manganese steel (which still qualifies as a carbon steel) can be good for many uses. Personally, I would like some chrome and nickel, but there is no doubt that Craftsman tools work. I don't know their make-up and question how many people do. Hope this hasn't confused you totally :-)

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