PIPES & TUBES-
CARBON MOLLY STEEL
This is one type of alloy steel as per A-204 (EFW), A-335(Seamless, A-309) etc. was developed in past years when steam temp. were approaching but not reaching 538oC under which conditions carbon steel was both unsatifactory and economical. It has been found that there is a tendency for carbon molybdenum to show graphitization at temperatures in excess of 427oC. It is used in welded construction.
