Oil & Gas
RAS Alloy provides NACE MR0175 compliant nickel alloys for sour service wellheads, downhole completion tools, subsea manifolds and offshore platform piping.
Typical Alloy Grades
625 / 825 / K-500 / C-276 / 718
Subsea wellhead connectors and Christmas trees , Inconel 718, Inconel 625
Downhole completion tools and packer components , Incoloy 925, Inconel 718
Sour gas production tubing hangers , Hastelloy C-276, Inconel 625
High-pressure gate valve stems and seats , Incoloy 925, Monel K-500
Offshore platform seawater piping , Monel 400, Inconel 625
Applicable Standards
Frequently Asked Questions
Oil & Gas Alloy FAQWhich alloys qualify for NACE MR0175 sour service?
UNS N07718 (718), N06625 (625), N08825 (825), N05500 (K-500), N10276 (C-276) and N09925 (925) are supplied within ANSI/NACE MR0175/ISO 15156 hardness limits for the ordered condition and product form, with API 6A / 6ACRA documentation for wellhead equipment.
What strength does Inconel 718 offer for subsea wellhead hardware?
Per AMS 5662, minimum 185 ksi (1276 MPa) tensile and 150 ksi (1034 MPa) yield in the solution annealed and aged condition — the standard for subsea wellhead connectors, Christmas trees and tubing hangers.
Which grades for downhole completion tools and packer components?
Incoloy 925 (UNS N09925, ASTM B805: minimum 1103 MPa tensile / 758 MPa yield aged) and Inconel 718, both qualified for sour service per API 6ACRA and MR0175/ISO 15156.