Alloying Steels for Corrosion Resistance To Gas-Condensate Fluids^* –Part 2: (Conclusion)

A metal resembling the carbon steel used in the manufacture of well tubing was included in the various corrosion tests to provide results against which test data on other steels and alloys could be compared. Commercial, hot-rolled, low-carbon, 16-gage, sheet steel identified in this report as SAE 1005 was used as the reference steel. Although consistent corrosion data were obtained when this steel was exposed in the corrosive mediums, an etching test made on a sectional surface of the steel sheet showed “rims” of oxide-free steel enclosing a core that might be more susceptible to corrosion than the outside layer or rim. With the thought of obtaining a more uniform material than the commercial sheet steel as the corrosion standard, some 16-gage sheets of “killed” steel were obtained and used as standard coupons in some of the tests. In the manufacture of the material identified in this report as killed...