Material Evaluation

This section contains reports dealing with evaluation of materials and test results in various corrosive production environments. From steels to nickel alloys, these reports present test results for various cracking assessment (stress corrosion cracking / sulfide stress cracking). Performance in terms of pitting resistance, crevice and general weight loss, corrosion behavior and stress corrosion cracking behavior of these materials is evaluated and presented in the following reports.

Select Report to read more     Erosion Corrosion Tests Using Sludge and Ash A Waste Disposal Company is involved with a project in which waste sludge is oxidized to ash using O2. Inlet conditions to the reactor involve sludge having a velocity (linear, in piping)of approximately 10 fps. Outlet conditions are similar with the exception that the sludge has been transformed to inorganic materials (ash) plus CO2 and water. The temperature of the reactor is in the range of 700-800 F. Products and reactants vary in temperature depending on their proximity to the reactor.   Read more         This report is available for download to corporate users only at this time and will be soon made available for individual purchase. Pitting Evaluation of 316L Tubing in Injected Water Environments 316L stainless steel material was tested using electrochemical techniques (ASTM G39, G61) to determine pitting susceptibility in five fluids. The five fluids consisted of CSM waste solution, two chloride - based salt solutions and two acidizing solutions. The tests indicated that the salt solutions (KCl and NH4Cl) are responsible for pitting of 316L injection tubing. CSM waste was not found to be corrosive. Acidizing fluids do not aggravate pitting but are quite corrosive to 316L. It is recomm...   Read more         This report is available for download to corporate users only at this time and will be soon made available for individual purchase. INCONEL 825 Qualification Tests Qualifications test were conducted on Inconel 825 according to NACE and ASTM standards. Three bars representing separate heat and bar diameters were used for the tests. The material dimensions and corresponding heat and identification numbers are shown.   Read more         This report is available for download to corporate users only at this time and will be soon made available for individual purchase. Evaluation of Zinc Silicide Coating for SCC Resistance of AISI 304 Stainless Steel Presented herein are the results of stress corrosion cracking (SCC) tests performed to evaluate the effect of silicide coatings on the SCC resistance of AISI 304 stainless steel in an elevated temperature chloride-continuing solution.   Read more         This report is available for download to corporate users only at this time and will be soon made available for individual purchase. Corrosion Evaluation of Carbon Steel in Lithium Bromide Solutions Corrosion tests conducted in inhibited 60% LiBr indicate that liquid phase corrosion rates remain low even up to 350 F. However, vapor phase and liquid-vapor interface corrosion rates are such that carbon steel will require protection above 300 F. 70-30 cupro-nickel showed low corrosion rates with no pitting at all temperatures tested. Grade 2 titanium showed significant pitting at all temperatures tested. Grade 7 titanium showed significant pitting at 300 F and above. Fluoroshield, a fluorocarb...   Read more         This report is available for download to corporate users only at this time and will be soon made available for individual purchase.