Menu
Search
Filters
Close
Menu

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

09341 Effect of Ageing and Hydrogen on Facture Mechanics and CVN Properties of 2,25Cr1Mo Steel Grades - Application to MPT Issues

Picture for 09341 Effect of Ageing and Hydrogen on Facture Mechanics and CVN Properties of 2,25Cr1Mo Steel Grade
Available for download
Product Number: 51300-09341-SG
ISBN: 09341 2009 CP
Author: Patrick Toussaint, Lionel Coudreus, Philippe Bourges, Sylvain Pillot, Cedric Chauvy, and Kenneth E.
Publication Date: 2009
$0.00
$20.00
$20.00
Standard and Vanadium enhanced 2.25Cr1Mo plate steels (ASTM A387 gr. 22 and A542 type D) are commonly used for the manufacturing of heavy reactors for use in petroleum refining plants. These reactors are fabricated from heavy wall plates, forged shells (thickness up to 300-350mm), forged nozzles and fittings. They are subjected to thermal cycles (stop and go) and to severe service conditions (high pressure, high hydrogen partial pressure). A primary concern for end-users is defining the Minimum Pressurizing Temperature (MPT). This temperature is the lowest temperature at which the vessel can be repressurized after shutdown. This minimum temperature insures no risk of brittle fracture, and is defined by fracture mechanics and/or CVN approaches and calculation.

This paper presents the methodology of MPT determination and the impact of ageing and exposure to hydrogen on material mechanical properties and on the value of the MPT. The MPT determination method is explained by using a virtual pressure vessel that is representative of reactor vessels found in petroleum refineries.

Keywords: Hydrogen, 2.25Cr1Mo, hydrogen embrittlement, Charpy test, tensile properties, fracture toughness
Standard and Vanadium enhanced 2.25Cr1Mo plate steels (ASTM A387 gr. 22 and A542 type D) are commonly used for the manufacturing of heavy reactors for use in petroleum refining plants. These reactors are fabricated from heavy wall plates, forged shells (thickness up to 300-350mm), forged nozzles and fittings. They are subjected to thermal cycles (stop and go) and to severe service conditions (high pressure, high hydrogen partial pressure). A primary concern for end-users is defining the Minimum Pressurizing Temperature (MPT). This temperature is the lowest temperature at which the vessel can be repressurized after shutdown. This minimum temperature insures no risk of brittle fracture, and is defined by fracture mechanics and/or CVN approaches and calculation.

This paper presents the methodology of MPT determination and the impact of ageing and exposure to hydrogen on material mechanical properties and on the value of the MPT. The MPT determination method is explained by using a virtual pressure vessel that is representative of reactor vessels found in petroleum refineries.

Keywords: Hydrogen, 2.25Cr1Mo, hydrogen embrittlement, Charpy test, tensile properties, fracture toughness
Product tags
Also Purchased
Picture for 09348 Prevention of External Chloride Stress Corrosion Cracking of Austenitic Stainless Steel with a
Available for download

09348 Prevention of External Chloride Stress Corrosion Cracking of Austenitic Stainless Steel with a

Product Number: 51300-09348-SG
ISBN: 09348 2009 CP
Author: Johan F.M. Van Roij and Jan G. De Jong
Publication Date: 2009
$20.00

Electrochemical and slow strain rate tests were done to demonstrate the protective ability of a thermal sprayed aluminum coating to prevent chloride stress corrosion cracking of TP304L SS in aqueous chloride solutions. Mitigation methods.
Picture for 08559 Effect of Hydrogen on Mechanical Behavior for 2,25Cr1Mo Grades (Standard and Vanadium Added
Available for download

08559 Effect of Hydrogen on Mechanical Behavior for 2,25Cr1Mo Grades (Standard and Vanadium Added

Product Number: 51300-08559-SG
ISBN: 08559 2008 CP
Author: Pillot Sylvain, Philippe Bourges, Lionel Coudreuse, Gaelle Masson, and Patrick Toussaint
Publication Date: 2008
$20.00
Picture for 08454 Stress Relaxation Cracking Of Welded Joints In Thick Sections Of Type-347 Stabilized Grade Of
Available for download

08454 Stress Relaxation Cracking Of Welded Joints In Thick Sections Of Type-347 Stabilized Grade Of Stainless Steel

Product Number: 51300-08454-SG
ISBN: 08454 2008 CP
Author: Christian E. van der Westhuizen
Publication Date: 2008
$20.00

This paper discusses reactors in hydrocarbon service that experienced numerous cracking problems over a 8-year period, where cracks were confined to the welded zones.  The material is  TP347 stainless steel, welded with E347-16 consumables.
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