Thanks Tom for the info on cast steel. All this terminology can be such a problem. What would you call ancient Chinese cast iron which has been decarborized while liquid to make it steel, and then it is cast? Is this not cast steel too? (hence my working definition). We really should go back to the term in the original language in which these processes were undertaken so we are certain what is meant. Steel production and nomenclature is such a grey area, where does one stop and the other begin?