Menu
Search
Filters
Close
Menu

03657 Failure Mechanisms of Alloy 800H in Steam Reformer Furnace Pigtails

Picture for 03657 Failure Mechanisms of Alloy 800H
Available for download
Product Number: 51300-03657-SG
ISBN: 03657 2003 CP
Author: Padma Kodali and John P Richert
$0.00
$20.00
$20.00
This paper will discuss the results of an investigation into cracking that occurred on alloy 800H pigtails from a steam reformer furnace. Typically, cracks on pigtails occur circumferentially due to high bending stresses in the bends, or at welded connections. However, in present samples, longitudinal cracks were found on the pigtails. Metallurgical evaluation revealed that the pigtails had cracked from both ID and OD as a result of intergranular stress oxidation cracking. This failure mechanism results from the combination of intergranular creep crack growth from repeated loading and high temperature oxidation. Our metallurgical observations are consistent with a common failure mechanism reported foralloy 800H. Keywords: Alloy 800H, intergranular stress oxidation cracking, pigtails, hairpins, steam reformer furnace
This paper will discuss the results of an investigation into cracking that occurred on alloy 800H pigtails from a steam reformer furnace. Typically, cracks on pigtails occur circumferentially due to high bending stresses in the bends, or at welded connections. However, in present samples, longitudinal cracks were found on the pigtails. Metallurgical evaluation revealed that the pigtails had cracked from both ID and OD as a result of intergranular stress oxidation cracking. This failure mechanism results from the combination of intergranular creep crack growth from repeated loading and high temperature oxidation. Our metallurgical observations are consistent with a common failure mechanism reported foralloy 800H. Keywords: Alloy 800H, intergranular stress oxidation cracking, pigtails, hairpins, steam reformer furnace
PRICE BREAKS - The more you buy, the more you save
Quantity
1+
5+
Price
$20.00
$20.00
Product tags
Also Purchased
Picture for Creep Rupture of a Hydrogen Production Reformer Outlet Header of Nickel Base Alloy
Available for download

51313-02369-Creep Rupture of a Hydrogen Production Reformer Outlet Header of Nickel Base Alloy

Product Number: 51313-02369-SG
ISBN: 02369 2013 CP
Author: Laxma Reddy Kethi Reddy
Publication Date: 2013
$20.00
Picture for 98443 REMAINING LIFE ASSESSMENT OF STEAM/
Available for download

98443 REMAINING LIFE ASSESSMENT OF STEAM/METHANE AND HYDROGEN REFORMER FURNACE TUBES

Product Number: 51300-98443-SG
ISBN: 98443 1998 CP
Author: Gordon P. Kallenberg
$20.00
Picture for Remaining Life Estimation of Alloy 800H Tube Material
Available for download

51318-11344-Remaining Life Estimation of Alloy 800H Tube Material

Product Number: 51318-11344-SG
Author: Shunji Watanabe / Toshikazu Shibasaki / Takashi Hokamura
Publication Date: 2018
$20.00

Damage example cases of pigtails under high temperature and pressure. Also: the technique for the remaining life assessment of pigtails - based on the relation between OD change and life consumption.
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