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Steel of structure of common carbon element
From;    Author:Stand originally
Weigh common carbon steel again. Compare with high grade carbon steel, to containing carbon limits of quantity, function and phosphor, sulfur is mixed the limitation of content of other and leftover element is wider. Our country assures a condition with what certain state ground delivers the goods, divide common carbon steel it is 3 kinds: Armour kind steel (A kind steel) , assure mechanical function only, do not assure chemical composition, second kind steel (B kind steel) , assure chemical composition only, do not assure mechanical function; Special kind of steel (C kind steel) , assure chemical composition already, assure mechanical function again. Special kind of steel is commonly used at making more important structural member.


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