Menu
Search
Filters
Close
Menu

Hydrogen embrittlement of high strength austenitic stainless steels

Picture for Hydrogen embrittlement of high strength austenitic stainless steels
Available for download

Hydrogen is considered an alternative energy source for fossil fuels, and consequently the requirements for materials used in hydrogen applications have been increased. These materials need to have high resistance against hydrogen embrittlement (HE). HE, that affects several metallic materials, is a complex phenomenon characterized by a degradation of the mechanical properties, in particular ductility.

Product Number: 51323-19269-SG
Author: Clara Herrera, Philipp Niederhofer, Merlin Seifert
Publication Date: 2023
$0.00
$20.00
$20.00

Hydrogen embrittlement (HE) is a complex phenomenon that affects a lot of metals characterized by a degradation of the mechanical properties. UNS S31603 with a minimum yield strength (YS) of 25 ksi (170 MPa), is frequently used for hydrogen applications due to its low susceptibility to HE, which is promoted by a high austenite stability. However, its use is limited when higher strength is required. Here, nitrogen-strengthened (UNS S20910), CrMnN and high interstitial (HIS) austenitic stainless steels in solution-annealed condition displaying YS higher than 55 ksi (380 MPa) could be part of a solution. The strength of these steels can be further increased by strain-hardening to YS higher than 758 MPa (110 ksi).


This paper discusses the susceptibility of high strength UNS S20910, CrMnN and HIS to hydrogen embrittlement. Characterization of microstructure, mechanical properties, and HE was performed for the materials in solution-annealed and strain-hardened condition. Slow strain rate tests (SSRT) were carried out in hydrogen atmosphere at 10 MPa (100 bar) and room temperature. UNS S20910 and CrMnN with a YS higher than 850 MPa (123 ksi) are resistant against hydrogen embrittlement showing a ductile fracture mode. On the other hand, HIS-steels are susceptible to HE with a loss in ductility.

Hydrogen embrittlement (HE) is a complex phenomenon that affects a lot of metals characterized by a degradation of the mechanical properties. UNS S31603 with a minimum yield strength (YS) of 25 ksi (170 MPa), is frequently used for hydrogen applications due to its low susceptibility to HE, which is promoted by a high austenite stability. However, its use is limited when higher strength is required. Here, nitrogen-strengthened (UNS S20910), CrMnN and high interstitial (HIS) austenitic stainless steels in solution-annealed condition displaying YS higher than 55 ksi (380 MPa) could be part of a solution. The strength of these steels can be further increased by strain-hardening to YS higher than 758 MPa (110 ksi).


This paper discusses the susceptibility of high strength UNS S20910, CrMnN and HIS to hydrogen embrittlement. Characterization of microstructure, mechanical properties, and HE was performed for the materials in solution-annealed and strain-hardened condition. Slow strain rate tests (SSRT) were carried out in hydrogen atmosphere at 10 MPa (100 bar) and room temperature. UNS S20910 and CrMnN with a YS higher than 850 MPa (123 ksi) are resistant against hydrogen embrittlement showing a ductile fracture mode. On the other hand, HIS-steels are susceptible to HE with a loss in ductility.

Product tags
Also Purchased
Picture for Susceptibility of martensitic stainless steels to hydrogen embrittlement
Available for download

Susceptibility of martensitic stainless steels to hydrogen embrittlement

Product Number: 51323-19273-SG
Author: Lütfi Ekmekci, Merlin Seifert, Clara Herrera
Publication Date: 2023
$20.00

A decarbonized energy system is underway worldwide. The Paris Agreement goal is to keep global warming “below 2 degrees Celsius above preindustrial levels, and to pursue effort to limit the temperature increase even further to 1.5 degrees Celsius.” To achieve this long-term temperature goal, big changes are needed in the ways energy is produced, distributed and storage.
Picture for Systematic Approach toward Damage Mechanism Reviews and Mechanical Integrity Improvements for Ammonia Synthesis and Fertilizer Facilities
Available for download

Systematic Approach toward Damage Mechanism Reviews and Mechanical Integrity Improvements for Ammonia Synthesis and Fertilizer Facilities

Product Number: 51323-19349-SG
Author: Michael Nugent, Daniel J. Benac, Sean Berg
Publication Date: 2023
$20.00

The use of Damage Mechanisms (DM’s) has been successfully developed and applied in the Oil Refining
industry for over 20 years. A damage mechanism is a specific combination of mechanical, chemical,
physical, or other processes that result in equipment degradation (piping or equipment) during operation
(active or shut down). These have been defined for Oil Refining (API RP 5711). API RP 571 is
supplemented with some similar and some specific individual damage mechanism, by technical reports, recommended practices, publications, and bulletins from API, as well as from the National Association of
Corrosion Engineers (NACE - now known as the Association for Materials Protection and Performance
or AMPP), and the Welding Research Council (WRC).
Picture for Valves In Hydrogen Gas Transport: The Challenges Of The Energy Transition
Available for download

Valves In Hydrogen Gas Transport: The Challenges Of The Energy Transition

Product Number: 51323-19525-SG
Author: Tundzhay Kurtulan, Ivan Gutierrez, Bradley Healey, Mark McLeod
Publication Date: 2023
$20.00

The suitability of valves in certain profiles for low-pressure pure and blended hydrogen gas service has been investigated. To achieve this, the existing standards, practices, design codes and regulations are reviewed in this paper and the input of natural gas operators, engineering companies, valve manufacturers and experts has been utilized.


The research and trials done by natural gas operators is starting to reveal that the effect of low-pressure hydrogen gas on valves is negligible and the risks involved due to hydrogen embrittlement were low.
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