AMPP Store - Products tagged with 'uns n08935'

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Cold Work Qualification Of UNS N08935 For Use In Chloride And Sour Environment

Product Number: 51322-18080-SG

Author: Karen Picker, Luiza Esteves, Marcelo Senatore

Publication Date: 2022

$20.00

UNS N08935 is a new versatile super austenitic alloy with extreme pitting resistance as indicated by its pitting resistance equivalent number (PREN) of 52. It can be used in a broader temperature range than superduplex and hyperduplex stainless steels, offers good weldability and is more cost-effective than Nickel-based materials which make the grade a good candidate for O&G applications, refineries, and chemical industries.^1,2

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Comparison Of CPT-Values Of UNS N08935, UNS N06625, UNS N06455 And UNS N06985 By Use Of A New Electrochemical Method

Product Number: 51321-16665-SG

Author: Anna Delblanc; Nian Zhou

Publication Date: 2021

$20.00

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Comparison of the Life Cycle Cost of Carbon Steel, Duplex Stainless Steels, Super Austenitic, and Nickel-Based Alloys for Crude Unit Overheard Condensers

Product Number: 51324-21175-SG

Author: Karen Picker; Luiza Esteves

Publication Date: 2024

$40.00

A refinery in the U.S. Gulf Coast had been using carbon steel tubes in two crude unit overhead condensers that suffered severe corrosion leading to premature failure after just 6 months in service. The metallurgy of the tube bundles was later upgraded to super duplex, UNS S32750, and hyper duplex stainless steel (DSS), S32707, which extended the service life to 12 months and two years, respectively. Failure analysis of the DSS indicated that the corrosion started as under-deposit corrosion. Selective corrosion occurred, where the ferrite phase suffered a preferential corrosion attack. Super Austenitic Alloy 35, UNS N08935, was recommended as an economical alternative to nickel Alloys 625 (UNS N0625 and C-276 (UNS N10276). Material selection and life-cycle cost analysis helped the end user select the super austenitic Alloy as the material of choice for the upgrade. The bundles have been in service for more than two years. This paper evaluates the materials selection process, fabrication cost, and life cycle cost analysis of the different Alloys used in these bundles since the first carbon steel upgrade through the present time.

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Corrosion Properties of Alloy 35Mo, New PREN 52 Alloy for Refinery and Chemical Industry

Product Number: 51320-14769-SG

Author: Daniel Gullberg, Robert Mattsson Öhnfeldt, Andreas Rahm Yhr

Publication Date: 2020

$20.00

Alloy 35Mo is a new versatile Ni-alloy which has corrosion and mechanical properties comparable to advanced Ni-base alloys, with the benefit that it can be processed like a stainless steel. The alloy was recently designated UNS N08935 with the composition 35Ni-30Fe-27Cr-6.5Mo-0.28N and has a PREN of 52. This paper presents the mechanical and physical properties of the material and results from corrosion testing. Corrosion results from general corrosion testing in acid environments, together with results from stress corrosion cracking testing in chloride environments and pitting corrosion testing show that UNS N08935 can be used in harsh environments in many applications, e.g. heat exchangers in refinery industry and equipment with seawater cooling. UNS N08935 also has high mechanical strength, and good weldability has been shown using Alloy 59 as filler metal.

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Evaluation of Crevice Corrosion Resistance of Super Austenitic (UNS N08935)

Product Number: 51324-20924-SG

Author: Luiza Esteves; Suresh Divi; Karen Picker

Publication Date: 2024

$40.00

UNS N08935 is a newly developed super-austenitic alloy for use in highly corrosion wet environments with excellent corrosion resistance in chloride induce service, refineries, petrochemical, chemical plants, biofuels, and other renewable energy applications. This alloy offers higher corrosion resistance and serves a broader temperature range than duplex stainless steels and is a cost-efficient alternative to nickel-based such as UNS N06625 with similar mechanical strength and corrosion performance. The aim of this work is to compare the critical crevice corrosion temperature (CCT) of UNS N08935 with UNS S31254, UNS N08367, UNS N10276 (nickel-based alloy) conducted in a Potentiostatic test in 1 M NaCl according to ASTM G150.

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Investigation of passive film formation on UNS N08935 in high chloride solution – Alternative method for advanced material selection

Product Number: 51323-19266-SG

Author: Nian Zhou, Robert Mattsson Öhnfeldt, Daniel Gullberg, Ulf Kivisäkk

Publication Date: 2023

$20.00

Material selection to get “fit-for-purpose” alloys is an important task that corrosion engineers face in their daily work. Two common ways of attacking such a challenge is by testing different alloys in environments similar to the application in a laboratory environment or installing samples in actual operating equipment. In the latter, testing is usually time consuming and might require plant turnovers to get access to the equipment for sample installation.

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UNS N08935 – A New Versatile Grade for O&G

Product Number: 51321-16314-SG

Author: Ulf H. Kivisäkk/Daniel Gullberg/Katarina Persson

Publication Date: 2021

$20.00

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UNS N08935- A New Alloy For Seawater Applications

Product Number: 51321-16573-SG

Author: Josefin Eidhagen/ Robert Mattsson Öhnfeldt/ Ulf Kivisäkk

Publication Date: 2021

$20.00

Products tagged with 'uns n08935'

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