Petroleum equipment companies currently sell 4130 and 4140 steel pipe with alloy 625 (UNS N06625) weld overlay for Oil Patch applications. Alloy 686 (UNS N06686), because of it's superior corrosion resistance, is currently being evaluated as a replacement material for alloy 625. Mechanical properties and Slow Strain Rate test results for the alloy 686 weld overlay are discussed relative to the alloy 625 weld overlay.

Subject
Materials, Corrosion resistant alloys, Secondary cracks, Materials performance, Sour environments, Welding, Sodium chloride, Steel, Corrosion resistance, Alloys, Stress corrosion cracking, Slow strain rate technique, Oil
Keywords:
UNS N06625, UNS N06686, 4130 steel, weld overlay, oil patch, applications, high strength, corrosion resistant alloy, sour service
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1994
Association for Materials Protection and Performance (AMPP)
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