ASTM A 763 : 2015 : REDLINE
Current
The latest, up-to-date edition.
Standard Practices for Detecting Susceptibility to Intergranular Attack in Ferritic Stainless Steels
English
01-03-2015
Important note : Users cannot be edited or removed once added to your Multi user PDF.CONTAINED IN VOL. 01.03, 2017 Defines the following four tests: 1) Practice W - Oxalic acid etch test for detecting Susceptibility to intergranular attack in stabilized ferritic stainless steels by classification of the etching structures; 2) Practice X - Ferric sulfate-sulfuric acid test for Detecting susceptibility to intergranular attack in ferritic stainless steels; 3) Practice Y - Copper-copper sulfate-50% sulfuric Acid test for detecting susceptibility to intergranular attack in ferritic stainless steels, & 4) Practice Z - Copper-copper sulfate-16% sulfuric Acid test for detecting susceptibility to intergranular attack in ferritic stainless steels.
| Committee |
A 01
|
| DocumentType |
Redline
|
| Pages |
22
|
| PublisherName |
American Society for Testing and Materials
|
| Status |
Current
|
1.1These practices cover the following four tests:
1.1.1Practice W—Oxalic acid etch test for detecting susceptibility to intergranular attack in stabilized ferritic stainless steels by classification of the etching structures (see Sections 3 – 10).
1.1.2Practice X—Ferric sulfate-sulfuric acid test for detecting susceptibility to intergranular attack in ferritic stainless steels (Sections 11 – 16).
1.1.3Practice Y—Copper-copper sulfate-50 % sulfuric acid test for detecting susceptibility to intergranular attack in ferritic stainless steels (Sections 17 – 22).
1.1.4Practice Z—Copper-copper sulfate-16 % sulfuric acid test for detecting susceptibility to intergranular attack in ferritic stainless steels (Sections 23 – 29).
1.2The following factors govern the application of these practices (1-6)2:
1.2.1Practice W, oxalic acid test, is a rapid method of identifying, by simple electrolytic etching, those specimens of certain ferritic alloys that are not susceptible to intergranular corrosion associated with chromium carbide precipitation. Practice W is used as a screening test to avoid the necessity, for acceptable specimens, of more extensive testing required by Practices X, Y, and Z. See Table 1 for a listing of alloys for which Practice W is appropriate.
1.2.2Practices X, Y, and Z can be used to detect the susceptibility of certain ferritic alloys to intergranular attack associated with the precipitation of chromium carbides or nitrides.
1.2.3Practices W, X, Y, and Z can also be used to evaluate the effect of heat treatment or of fusion welding on susceptibility to intergranular corrosion.
1.2.4Table 2 lists the identification ferritic stainless steels for which data on the application of at least one of the standard practices is available.
1.2.5Some stabilized ferritic stainless steels may show high rates when tested by Practice X because of metallurgical factors not associated with chromium carbide or nitride precipitation. This possibility must be considered in selecting the test method. Combinations of alloys and test methods for which successful experience is available are shown in Table 1. Application of these standard tests to the other ferritic stainless steels will be by specific agreement between producer and user.
1.3Depending on the test and alloy, evaluations may be accomplished by weight loss determination, microscopical examination, or bend test (Sections 30 and 31). The choices are listed in Table 1.
1.4This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific safety precautionary statements, see 3.2.5, Section 7, 13.1, and 19.1.
| BS ISO 3651-3:2017 | Determination of resistance to intergranular corrosion of stainless steels Corrosion test for low-Cr ferritic stainless steels |
| ASTM A 803/A803M : 2016 : REDLINE | Standard Specification for Seamless and Welded Ferritic Stainless Steel Feedwater Heater Tubes |
| ASTM A 268/A268M : 2010 : R2016 | Standard Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service |
| AASHTO T 372M/T 372 : 2017 | METHOD OF TEST FOR SENSITIVITY OF STAINLESS STEEL TO INTERGRANULAR ATTACK |
| ASTM A 880 : 1995 | Standard Practice for Criteria for Use in Evaluation of Testing Laboratories and Organizations for Examination and Inspection of Steel, Stainless Steel, and Related Alloys (Withdrawn 2004) |
| ASTM A 480/A480M : 2017-11 | SPECIFICATION FOR GENERAL REQUIREMENTS FOR FLAT-ROLLED STAINLESS AND HEAT-RESISTING STEEL PLATE, SHEET, AND STRIP |
| AWS WHC4.05 : 0 | MATERIALS AND APPLICATION - PART 1 - WELDING HANDBOOK, 9TH EDITION, VOLUME 4 - CHAPTER 5: STAINLESS AND HEAT-RESISTANT STEELS |
| ISO 3651-3:2017 | Determination of resistance to intergranular corrosion of stainless steels — Part 3: Corrosion test for low-Cr ferritic stainless steels |
| ASTM A 268/A268M : 2010 | Standard Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.