Menu
Search
Filters
Close
Menu

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

51313-02289-Proposal of HIC Test Solution with Buffer Capacity in NACE Standard TM0284

Picture for Proposal of HIC Test Solution with Buffer Capacity in NACE Standard TM0284
Available for download
Product Number: 51313-02289-SG
ISBN: 02289 2013 CP
Author: Takuya Hara
Publication Date: 2013
$0.00
$20.00
$20.00

Hydrogen Induced Cracking (HIC) is one of the most important properties of line pipes for sour service. The optimum evaluation methods of HIC are also important in order to select the optimal line pipes from the viewpoint of fit-for-purpose (FFP). HIC of line pipes for sour service is evaluated based on the NACE TM0284 specifications for which two solutions are applied. Solution A consists of 5% sodium chloride and 0.5% acetic acid solution saturated with H2S at a partial pressure of 0.1 MPa. Solution B consists of substitute ocean water saturated with H2S at a partial pressure of 0.1 MPa. The pH of Solution A can be acceptable in the range from 2.7 to 4.0 while that of Solution B is acceptable from 4.8 to 5.4 during the HIC test. The hydrogen content in the steel decreases with increasing pH during the HIC test. Since the HIC behavior of steels is also affected by the shift in the pH such shifting is not appropriate for HIC tests. The ISIJ HLP committee proposes a modified solution with a strong buffering capacity to maintain a constant pH during HIC tests. This paper describes the buffering effect in various buffer solutions in HIC tests as well as the hydrogen entry behavior.

Hydrogen Induced Cracking (HIC) is one of the most important properties of line pipes for sour service. The optimum evaluation methods of HIC are also important in order to select the optimal line pipes from the viewpoint of fit-for-purpose (FFP). HIC of line pipes for sour service is evaluated based on the NACE TM0284 specifications for which two solutions are applied. Solution A consists of 5% sodium chloride and 0.5% acetic acid solution saturated with H2S at a partial pressure of 0.1 MPa. Solution B consists of substitute ocean water saturated with H2S at a partial pressure of 0.1 MPa. The pH of Solution A can be acceptable in the range from 2.7 to 4.0 while that of Solution B is acceptable from 4.8 to 5.4 during the HIC test. The hydrogen content in the steel decreases with increasing pH during the HIC test. Since the HIC behavior of steels is also affected by the shift in the pH such shifting is not appropriate for HIC tests. The ISIJ HLP committee proposes a modified solution with a strong buffering capacity to maintain a constant pH during HIC tests. This paper describes the buffering effect in various buffer solutions in HIC tests as well as the hydrogen entry behavior.

Product tags
Also Purchased
Picture for Fitness-for-Purpose HIC Testing of Heavy Wall Large-Diameter Pipes for Mildly Sour Applications in t
Available for download

Fitness-for-Purpose HIC Testing of Heavy Wall Large-Diameter Pipes for Mildly Sour Applications in the New NACE TM0284-2016 Solution C

Product Number: 51317--8881-SG
ISBN: 8881 2017 CP
Author: Thomas Haase
Publication Date: 2017
$20.00

Resistance testing of low alloyed steel pipes to Hydrogen Induced Cracking (HIC) is performed according to NACE standard TM0284. Fitness-for-purpose testing, where the appropriate environment and pressures are selected, has been included.
Picture for 08109 Effect of NACE TM0284 Test Modifications on the HIC Performance on Large-Diameter Pipes
Available for download

08109 Effect of NACE TM0284 Test Modifications on the HIC Performance on Large-Diameter Pipes

Product Number: 51300-08109-SG
ISBN: 08109 2008 CP
Author: Christoph Bosch, Andreas Liessem, Jean Pierre Jansen, and Thomas Haase
Publication Date: 2008
$20.00
Picture for Iron Carbide & Its Influence on Formation of Protective Iron Carbonate in CO2 Corr. of Mild Steel
Available for download

51313-02291-Iron Carbide & Its Influence on Formation of Protective Iron Carbonate in CO2 Corr. of Mild Steel

Product Number: 51313-02291-SG
ISBN: 02291 2013 CP
Author: Fernando Farelas
Publication Date: 2013
$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