Menu
Search
Filters
Close
Menu

Save 20% on select titles with code HIDDEN24 - Shop The Sale Now

07497 Improved Resistance towards Hydrogen Induced Stress Cracking (HISC) of Hot Isostatically Pressed (HIP) Duplex Stainless Steels Under Cathodic Protection

Picture for 07497 Improved Resistance towards Hydrogen Induced Stress Cracking (HISC) of Hot Isostatically Press
Available for download
Product Number: 51300-07497-SG
ISBN: 07497 2007 CP
Author: Gro Ostensen Lauvstad, Bard Nyhus, Carl-Gustaf Hjorth, Martin Bjurstrom, and Roy Johnsen
Publication Date: 2007
$0.00
$20.00
$20.00
Hot isostatically pressed (HIP) and forged duplex stainless steels are both candidate materials for subsea components. In the present study, the resistance towards hydrogen induced stress cracking (HISC) of these materials has been compared. Testing was performed by four-point bending of fatigue pre-cracked SENB (single edge notch bend) specimens polarised to -1050 mV vs. SCE in a 3.5 wt% NaCl solution at 4 °C. The specimens were loaded to different crack tip opening displacement (CTOD) values for a maximum duration of 30 days. Three HIP materials, one duplex steel (DSS, UNS S31803) and two super duplex steels (SDSS, UNS S32550 and UNS S32760) were investigated and compared to a forged SDSS material (UNS S32760). For the HIP materials no cracking was detected for specimens loaded at CTOD levels lower than 0.06 mm, while some slight cracking was observed for a CTOD of 0.08 mm. The CTOD threshold value for HISC thus appears to be in the range from 0.06 to 0.08 mm for these materials. The forged SDSS material on the other hand showed significant cracking at CTOD levels above 0.03 mm, while no cracking was observed at CTOD levels below 0.016 mm. The testing thus demonstrates the improved resistance towards HISC for the HIP materials.
Hot isostatically pressed (HIP) and forged duplex stainless steels are both candidate materials for subsea components. In the present study, the resistance towards hydrogen induced stress cracking (HISC) of these materials has been compared. Testing was performed by four-point bending of fatigue pre-cracked SENB (single edge notch bend) specimens polarised to -1050 mV vs. SCE in a 3.5 wt% NaCl solution at 4 °C. The specimens were loaded to different crack tip opening displacement (CTOD) values for a maximum duration of 30 days. Three HIP materials, one duplex steel (DSS, UNS S31803) and two super duplex steels (SDSS, UNS S32550 and UNS S32760) were investigated and compared to a forged SDSS material (UNS S32760). For the HIP materials no cracking was detected for specimens loaded at CTOD levels lower than 0.06 mm, while some slight cracking was observed for a CTOD of 0.08 mm. The CTOD threshold value for HISC thus appears to be in the range from 0.06 to 0.08 mm for these materials. The forged SDSS material on the other hand showed significant cracking at CTOD levels above 0.03 mm, while no cracking was observed at CTOD levels below 0.016 mm. The testing thus demonstrates the improved resistance towards HISC for the HIP materials.
Product tags
Also Purchased
Picture for 07496 New Improved Method for HISC Testing of Stainless Steels under Cathodic Protection
Available for download

07496 New Improved Method for HISC Testing of Stainless Steels under Cathodic Protection

Product Number: 51300-07496-SG
ISBN: 07496 2007 CP
Author: Roy Johnsen, Bard Nyhus, Gro O. Lavvstad, and Stig Wastberg
Publication Date: 2007
$20.00

It has been important for the oil industry to establish reliable test method(s) for qualification and safe utilization of subsea pipelines and components made from stainless steels. This paper describes a method that has been developed through a JIP executed with support from leading oil companies and meterial suppliers.p
Picture for 07494 Effect of Plastic Deformation on Hydrogen Induced Cracking (HISC) in Duplex Stainless Steel
Available for download

07494 Effect of Plastic Deformation on Hydrogen Induced Cracking (HISC) in Duplex Stainless Steel

Product Number: 51300-07494-SG
ISBN: 07494 2007 CP
Author: Espen Heier, Bjorn Andreas Hugaas, and Odd Haukas-Eide
Publication Date: 2007
$20.00
Picture for 11294 Susceptibility of Hydrogen Induced Stress Cracking of Duplex SS at Elevated Temperature
Available for download

11294 Susceptibility of Hydrogen Induced Stress Cracking of Duplex Stainless Steel at Elevated Temperature

Product Number: 51300-11294-SG
ISBN: 2011 11294 CP
Author: Roy Johnson, Bard Nyhus, and Ole Edvard Kongstein
Publication Date: 2011
$20.00

Experience has shown that stainless steels can suffer from Hydrogen Induced Stress Cracking (HISC) under cathodic protection in seawater.  This paper presents results from a test program examining the HISC susceptibility of 25% Cr super duplex stainless steel (UNS S32750) at temperatures up to 1500C.
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