Menu
Search
Filters
Close
Menu

08036 Evaluation of Steel and TSA Coating in a Corrosion Under Insulation (CUI) Environment

Picture for 08036 Evaluation of Steel and TSA Coating in a Corrosion Under Insulation (CUI) Environment
Available for download

A laboratory investigation of corrosion under insulation (CUI) using methods given in ASTM G189 for cyclic temperature, wet/dry conditions. Two long term exposure tests of three material conditions and two insulative materials (mineral wool and calcium silicate insulations).

Product Number: 51300-08036-SG
ISBN: 08036 2008 CP
Author: Russell D. Kane, Monica M. Chauviere, and Keith Chustz
Publication Date: 2008
Industry: Science of Corrosion
$0.00
$20.00
$20.00
This study involved a laboratory investigation of corrosion under insulation (CUI) using methods given in ASTM G189 for cyclic temperature, wet/dry conditions. Two long term exposure tests were conducted including three material conditions (bare steel, thermal sprayed aluminum (TSA) coated steel and a defected TSA coating) and two insulative materials (mineral wool and calcium silicate insulations). All specimens and insulation materials were heat and/or solution aged prior to exposure in the CUI test cell to reduce initial transients associated with new materials. The highest corrosion rates in this program were observed during CUI exposures for bare steel under mineral wool insulation. Maximum corrosion rates were up to 40 mpy (1.0 mm/yr). TSA coated specimens (non-defected) showed the lowest corrosion rates for all cases with corrosion rate of <0.1 mpy (.003 mm/y) under mineral wool insulation and up to 1 mpy (0.03 mm/y) for calcium silicate insulation. Exposed steel in defected TSA coated specimens showed corrosion rates up to 10 mpy (0.25 mm/y) under mineral wool and calcium silicate insulations with the periods of maximum corrosion activity being different in each case.
This study involved a laboratory investigation of corrosion under insulation (CUI) using methods given in ASTM G189 for cyclic temperature, wet/dry conditions. Two long term exposure tests were conducted including three material conditions (bare steel, thermal sprayed aluminum (TSA) coated steel and a defected TSA coating) and two insulative materials (mineral wool and calcium silicate insulations). All specimens and insulation materials were heat and/or solution aged prior to exposure in the CUI test cell to reduce initial transients associated with new materials. The highest corrosion rates in this program were observed during CUI exposures for bare steel under mineral wool insulation. Maximum corrosion rates were up to 40 mpy (1.0 mm/yr). TSA coated specimens (non-defected) showed the lowest corrosion rates for all cases with corrosion rate of <0.1 mpy (.003 mm/y) under mineral wool insulation and up to 1 mpy (0.03 mm/y) for calcium silicate insulation. Exposed steel in defected TSA coated specimens showed corrosion rates up to 10 mpy (0.25 mm/y) under mineral wool and calcium silicate insulations with the periods of maximum corrosion activity being different in each case.
Product tags
Also Purchased
Picture for Understanding Insulation Chemistry Proven to Inhibit Corrosion Under Insulation (CUI)
Available for download

Understanding Insulation Chemistry Proven to Inhibit Corrosion Under Insulation (CUI)

Product Number: 51317--8876-SG
ISBN: 8876 2017 CP
Author: David Shong
Publication Date: 2017
$20.00

Since 2002, a corrosion inhibiting chemistry package has been an integral part of two specific industrial insulations. This paper explains, at a molecular level, how this package engages a two-pronged defense (physical coating and pH buffering) against CUI.
Picture for Cyclic CUI Testing of Insulation Materials
Available for download

Cyclic CUI Testing of Insulation Materials

Product Number: 51317--8877-SG
ISBN: 8877 2017 CP
Author: Soeren Rasmussen
Publication Date: 2017
$20.00

Via the testing of six generically different insulation materials, the study has tried to identify factors in an insulation material that are more influential on corrosion rates of carbon steel.

 
Picture for Performance of Three Types of Coatings in a Simulated Corrosion Under Insulation Condition
Available for download

Performance of Three Types of Coatings in a Simulated Corrosion Under Insulation Condition

Product Number: 51317--9296-SG
ISBN: 9296 2017 CP
Author: Junki Miyashita
Publication Date: 2017
$20.00

This paper evaluates the resistances to CUI of three types of coatings under severe CUI conditions using a vertical pipe test method. Certain possible improvements in the test method are also discussed.
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