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Corrosion Performance Of Various Types Of Welded And Seamless Tubulars Of Ni-Mo And Ni-Cr-Mo Alloys In Standard Acids And Other Selected Environments

Nickel-based corrosion-resistant alloys are vitally important materials in chemical processing, petrochemical, agrichemical and pharmaceutical industries. When aggressive process streams are involved, corrosion-resistant alloys are selected for applications such as heat exchangers, reactors, pressure vessels and/or other process equipment in various industry sectors.1 The Ni-Mo alloys provide excellent resistance to reducing hydrochloric and sulfuric acids over large ranges of concentration and temperature. They also resist pure hydrobromic acid, hydrofluoric acid and other non-oxidizing halide salt solutions.

Product Number: 51322-17619-SG
Author: Ling Chen, Vinay Deodeshmukh, Rusty White, Kenneth Newlen
Publication Date: 2022
$0.00
$20.00
$20.00

The Ni-based corrosion resistant alloys are known to exhibit high resistance to hydrochloric and sulfuric acids over wide concentration and temperature ranges. Pipe and tube materials are widely used in chemical process industry (CPI) and various other industries. The common tubing forms include seamless, as-welded, welded bead-worked, and welded fully cold-reduced. Many of the Ni-Based product types are produced according to ASTM and ASME (B622, B626, B619) (1) specifications. Commercial UNS N10675 (HASTELLOY® B-3®) (2), UNS N10276 (HASTELLOY® C-276) (2), UNS N06200 (HASTELLOY® C-2000 ®) (2), UNS N06022 (HASTELLOY® C-22®) (2) and UNS N10362 (HASTELLOY® HYBRID-BC1®) (2) alloys with the above-mentioned forms of tubing materials were studied in this paper. UNS N10362 tubes showed excellent general corrosion and pitting resistance compared to other C-type alloy tubes in selected test environments. C-type alloy welded tubes sensitization behavior was studied in ASTM standard G28A(3)and G28B (3) solutions. From testing it was concluded that welded and fully cold-reduced tubing has similar corrosion resistance to that of seamless tubing, while as-welded and welded bead-worked tubing underwent localized corrosion.

The Ni-based corrosion resistant alloys are known to exhibit high resistance to hydrochloric and sulfuric acids over wide concentration and temperature ranges. Pipe and tube materials are widely used in chemical process industry (CPI) and various other industries. The common tubing forms include seamless, as-welded, welded bead-worked, and welded fully cold-reduced. Many of the Ni-Based product types are produced according to ASTM and ASME (B622, B626, B619) (1) specifications. Commercial UNS N10675 (HASTELLOY® B-3®) (2), UNS N10276 (HASTELLOY® C-276) (2), UNS N06200 (HASTELLOY® C-2000 ®) (2), UNS N06022 (HASTELLOY® C-22®) (2) and UNS N10362 (HASTELLOY® HYBRID-BC1®) (2) alloys with the above-mentioned forms of tubing materials were studied in this paper. UNS N10362 tubes showed excellent general corrosion and pitting resistance compared to other C-type alloy tubes in selected test environments. C-type alloy welded tubes sensitization behavior was studied in ASTM standard G28A(3)and G28B (3) solutions. From testing it was concluded that welded and fully cold-reduced tubing has similar corrosion resistance to that of seamless tubing, while as-welded and welded bead-worked tubing underwent localized corrosion.

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Corrosion Of Wrought And Cast Ni-Fe-Cr-Mo Alloys In High-Temperature Brines And CO2-Rich Supercritical Phases With Oxygen And Hydrogen Sulfide
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Corrosion Of Wrought And Cast Ni-Fe-Cr-Mo Alloys In High-Temperature Brines And CO2-Rich Supercritical Phases With Oxygen And Hydrogen Sulfide

Product Number: 51322-17882-SG
Author: Manuel Marya
Publication Date: 2022
$20.00

Carbon dioxide capture, utilization, and storage (CCUS) is part of decarbonization solutions to reduce green-house gas emissions, as exemplified by the growing number of capital expenditure projects worldwide.1-2 In CCUS, the carbon dioxide (CO2) is consecutively (1) captured at origin, such as power plants and natural gas production sites, (2) separated from other gases and impurities, (3) compressed, (4) transported through pipelines, and finally (5) injected into a storage site such as deleted hydrocarbon wells, saline aquafers, coal beds, underground caverns, or seawater.1,3 Since the 1970s, specifically the first commercial carbon dioxide flooding in the United States (known as SACROC), carbon dioxide sequestration has been largely discussed in the context of enhanced oil recovery (EOR), not in the newer context of Sustainability. Nonetheless, substantial experience has been drawn from EOR, including for the selection of the right and economical materials.4 As reflected by the literature, past materials test programs have rarely given any attention to downhole jewelry alloys compared to tubulars or surface-infrastructure alloys, and consequently the track records for such bar-stock alloys are either inexistent or not readily available. 5-7 This lack of apparent return-on-experience represents a knowledge gap against the prospect of a safe greenhouse gas control method; needless to say, it also justifies the requirements for reliable well integrity monitoring solutions in carbon dioxide sequestration wells.8-9