Session: Advances in Materials for Oil and Gas Production (Part III of III)
Development of High Strength 718-150K Additive Manufactured Alloy for Critical Applications in H2S Environments (C2026-00113)
Tuesday, March 17, 2026
2:30 PM - 3:00 PM Central
Location: 362 DE
Earn .5 PDH
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Additive manufacturing (AM) has traditionally been employed for the fabrication of prototypes and non-critical components, particularly in oilfield environments. However, as the industry seeks to expand the use of AM to critical components, the need for high strength grades with robust qualification protocols arises. This paper presents a development for a safety-critical UNS N07718 high strength nickel alloy component produced using the laser powder bed fusion (PBF) AM process. This paper addresses qualification details of 718 nickel alloy at the 150 ksi minimum yield strength level, including additive manufacturing process parameters, heat treatment protocols and environmental cracking tests utilizing both slow strain rate testing (SSRT) and C-ring testing in a high temperature high pressure H2S containing environment. In addition to composition, mechanical property and impact resistance measurements, included are microstructural evaluations conducted as a function of location within the component being qualified. The link between printing details and location with respect to microstructure is presented.
