Home Resource Center Technical Papers Oil and Gas Drilling Materials OIL & GAS DRILLING ALLOYS TECHNICAL PAPERS Find detailed technical data in our library for products used in the Oil and Gas Drilling process. These Tech Briefs include information on cavitation resistance, galling properties, chloride stress corrosion and NACE compliance. If you cannot find the information you need or would like to request additional technical product details, please feel free to Contact Us for more information. Resources Cavitation Resistance of Selected Copper Alloys Galling resistance has been one of the primary reasons that Alloy 25 has been selected for equipment where the service conditions included high strength and relative motion between metal components. Alloy 25 has been shown to resist galling to many other metals and to resist galling to other Alloy 25 parts. Tech Brief NACE MR0175/ISO 15156 Compliance of ToughMet and Copper Beryllium The purpose of the NACE MR0175/ISO 15156 standard is to provide a set of guidelines for the use of material in sour (H2S) service. Copper alloys in general (including copper beryllium and ToughMet 3 copper nickel tin) are listed in the standard as being acceptable for use in sour service. Data that show how copper beryllium and ToughMet withstand severe enviroments are shown in this paper. Tech Brief - Cavitation Resistance of Selected Copper Alloys Materion Performance Alloys ToughMet® and copper beryllium products are highly resistant to cavitation. Galling of Non-Magnetic Drill String Components Copper beryllium is the most resistant to galling and seizing of all metals used in the drill string, and inherently provide all the galling and seizing resistance for the life of the component. Tech Brief - The Chloride Stress Corrosion Cracking Behavior of High Performance Copper Alloys Chlorides in certain drilling muds can cause unpredictable stress corrosion cracking (SCC) in metal alloys. Even under the increased stress of higher temperatures and chloride drilling environments, ToughMet copper nickel tin and beryllium copper are highly resistant to chloride SCC, unlike austenitic stainless steels, making it a reliable choice for nonmagnetic drill collars. Tech Brief - A Guide to Galvanic Corrosion Galvanic can occur when two or more dissimilar metals contact each other in an electrolytic environment. This can occur in seawater, chemical processing, or in automotive fasteners and connectors exposed to road salt spray. It is important to understand the relative position of metals on the galvanic series when they will be coupled near an electrolytic solution.