Server maintenance is scheduled for Saturday, December 21st between 6am-10am CST.

During that time, parts of our website will be affected until maintenance is completed. Thank you for your patience.

Menu
Search
Filters
Close
Menu

Use GIVING24 at checkout to save 20% on eCourses and books (some exclusions apply)!

51318-11243-Applicability of ASTM G28 testing

Picture for Applicability of ASTM G28 testing
Available for download

There appears to be a need for long-term service data for wrought and welded materials with grain boundary precipitation, which can then be compared with ASTM G28 or ASTM A262 data to provide confidence in utilizing such materials.

Product Number: 51318-11243-SG
Author: Briony Holmes
Publication Date: 2018
Industry: Test Method
$0.00
$20.00
$20.00

 

It is common practice to perform intergranular corrosion testing in accordance with ASTM (1) G28 on solid solution nickel alloys, e.g. UNS N08825 (Alloy 825) and UNS N06625 (Alloy 625). The results of such tests are applied widely as acceptance tests for parent and welded materials, and as such are essentially used to confirm the suitability of these materials for service. The ASTM G28 test has been used in this way successfully in many cases. However, there are necessarily limitations in the potential applicability of standard tests because the mechanism of corrosion in the service environment may be different than that targeted in the standard test, due to the difference between the actual service environment and the test solution. Indeed, there have been recent instances in TWI’s experience where the acceptance test performance has been unacceptable, but the service performance has been acceptable. The applicability of ASTM G28 tests will be reviewed.

Key words: intergranular corrosion, nickel alloys, sensitization, test method, G28, applicability, weld.

 

It is common practice to perform intergranular corrosion testing in accordance with ASTM (1) G28 on solid solution nickel alloys, e.g. UNS N08825 (Alloy 825) and UNS N06625 (Alloy 625). The results of such tests are applied widely as acceptance tests for parent and welded materials, and as such are essentially used to confirm the suitability of these materials for service. The ASTM G28 test has been used in this way successfully in many cases. However, there are necessarily limitations in the potential applicability of standard tests because the mechanism of corrosion in the service environment may be different than that targeted in the standard test, due to the difference between the actual service environment and the test solution. Indeed, there have been recent instances in TWI’s experience where the acceptance test performance has been unacceptable, but the service performance has been acceptable. The applicability of ASTM G28 tests will be reviewed.

Key words: intergranular corrosion, nickel alloys, sensitization, test method, G28, applicability, weld.

Product tags
Also Purchased
Picture for Comments on ASTM G48
Available for download

51316-7198-Comments on ASTM G48

Product Number: 51316-7198-SG
ISBN: 7198 2016 CP
Author: Brian DeForce
Publication Date: 2016
$20.00

A brief overview of ASTM G48 – "Standard Test Methods for Pitting and Crevice Corrosion Resistance of Stainless Steels and Related Alloys by Use of Ferric Chloride Solution" is used for corrosion testing in the metals industry.
Picture for Abrasive Blasted Surface Preparation – Does the Pipeline Coating Industry Really Understand it?
Available for download

51318-11245-Abrasive Blasted Surface Preparation – Does the Pipeline Coating Industry Really Understand it?

Product Number: 51318-11245-SG
Author: Shiwei William Guan
Publication Date: 2018
$20.00

Three recent international pipeline projects illustrate that the typical surface profile height and abrasive blast cleaning requirements in today’s coating standards and specifications have not been sufficient to define the adequate level of the abrasive blasting.
Picture for Materials Issues In Biomass Gasification
Available for download

51318-11246-Materials Issues In Biomass Gasification

Product Number: 51318-11246-SG
Author: James R Keiser / Raynella M Connatser / Michael P. Brady / Samuel A Lewis, Sr. / Donovan Leonard
Publication Date: 2018
$20.00

Our laboratory has investigated the causes of degradation of structural components of these gasifiers. In all cases, the likely causes of degradation have been determined and alternate materials identified.
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