Menu
Search
Filters
Close
Menu

Celebrate World Corrosion Awareness Day with 20% off eCourses and eBooks with code WCAD2024 at checkout!

UNS N08935 – A New Versatile Grade for O&G

Picture for UNS N08935 – A New Versatile Grade for O&G
Available for download
Product Number: 51321-16314-SG
Author: Ulf H. Kivisäkk/Daniel Gullberg/Katarina Persson
Publication Date: 2021
$0.00
$20.00
$20.00

UNS N08935 is a new versatile austenitic alloy with the composition 35Ni–30Fe-27Cr–6.5Mo–0.28N and a PREN of 52. It has an extreme pitting resistance which makes the grade a good candidate for O&G applications. The alloy is available in several strength levels with good ductility: seamless tubes with 62 ksi, 140 ksi and 180 ksi. It is an austenitic grade that is worked to strength which results in an alloy with very high resistance to hydrogen effects. According to NACE MR0175 / ISO 15156 the grade will be a Type 4c material. For the 62 ksi material the resistance against Hydrogen Induced Stress Cracking (HISC) has been demonstrated by constant load testing of specimens polarized to -1050 mVSCE. For the cold worked material Slow Strain Rate Testing (SSRT) at Test Level VI in NACE MR0175 / ISO 15156, a condition within Type 4d is discussed. With its high mechanical strength and pitting resistance as well as being not prone for HISC, UNS N8935 is an interesting candidate for subsea applications. Further, UNS N08935 is interesting as tubing for HPHT-wells due to its very high strength.

Key words: UNS N08935, SCC, hydrogen sulfide, hydrogen embrittlement

UNS N08935 is a new versatile austenitic alloy with the composition 35Ni–30Fe-27Cr–6.5Mo–0.28N and a PREN of 52. It has an extreme pitting resistance which makes the grade a good candidate for O&G applications. The alloy is available in several strength levels with good ductility: seamless tubes with 62 ksi, 140 ksi and 180 ksi. It is an austenitic grade that is worked to strength which results in an alloy with very high resistance to hydrogen effects. According to NACE MR0175 / ISO 15156 the grade will be a Type 4c material. For the 62 ksi material the resistance against Hydrogen Induced Stress Cracking (HISC) has been demonstrated by constant load testing of specimens polarized to -1050 mVSCE. For the cold worked material Slow Strain Rate Testing (SSRT) at Test Level VI in NACE MR0175 / ISO 15156, a condition within Type 4d is discussed. With its high mechanical strength and pitting resistance as well as being not prone for HISC, UNS N8935 is an interesting candidate for subsea applications. Further, UNS N08935 is interesting as tubing for HPHT-wells due to its very high strength.

Key words: UNS N08935, SCC, hydrogen sulfide, hydrogen embrittlement

Product tags
Also Purchased
Picture for UNS N08935- A New Alloy For Seawater Applications
Available for download

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

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
$20.00
Picture for Hydrogen-Assisted Failure in Ni-Based Superalloy 718
Available for download

51316-7459-Hydrogen-Assisted Failure in Ni-Based Superalloy 718

Product Number: 51316-7459-SG
ISBN: 7459 2016 CP
Author: Zahra Tarzimoghadam
Publication Date: 2016
$20.00
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support