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Development Of The Multipurpose High Strength Super Austenitic Stainless Steel UNS N08034 By Cold Working For Challenging Oilfield Environments

Product Number: 51322-17720-SG

Author: Julia Botinha, Helmuth Sarmiento Klapper, Clara Herrera, Merlin Seifert, Bodo Gehrmann, Helena Alves

Publication Date: 2022

$20.00

Wells in oil, gas and geothermal production experience a broad spectrum of operating conditions in terms of temperature, depth, pressure and production environments, which govern material selection. For severe environments, where high strength and toughness combined with excellent corrosion and cracking resistance are required, a new superaustenitic stainless steel has been recently developed. Aiming for a minimum yield strength of at least 120 ksi (827 MPa), strain hardening enables the desired mechanical properties, allowing users to avoid well known but HISC susceptible and less cost effective precipitation hardened (PH) nickel alloys.

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Optimization of UNS N08034 in the Cold Worked Condition for Use in the Oil and Gas Industry

Product Number: 51324-20938-SG

Author: Philipp Hübner; Bodo Gehrmann; Julia Botinha; Helena Alves

Publication Date: 2024

$40.00

UNS N08034, commonly referred to as Alloy 31 Plus(1), is a non-precipitation-hardenable super austenitic stainless steel that is currently commercially available in the solution-annealed state. Compared to its predecessor, Alloy 31(2) (UNS N08031), it has an increased nickel content and the addition of nitrogen and manganese, which serve to stabilize the austenitic phase. The well-balanced chemical composition of UNS N08034 enables excellent machinability in both hot and cold conditions, as well as favorable weldability. In the oil and gas industry, materials selected for various applications must possess superior corrosion resistance and enhanced mechanical strength, particularly at the expected operating temperatures. UNS N08034 shows promising potential for exploration in this regard. However, to meet the application requirements, an alternative production route must be established, specifically focusing on mechanical strength. This paper presents two distinct approaches. Firstly, the development of a cold working processing route for UNS N08034 is discussed. Secondly, the influence of specific alloying elements on the response to cold work is examined.

Products tagged with 'uns n08034'

Development Of The Multipurpose High Strength Super Austenitic Stainless Steel UNS N08034 By Cold Working For Challenging Oilfield Environments

Optimization of UNS N08034 in the Cold Worked Condition for Use in the Oil and Gas Industry

Association for Materials Protection and Performance