ASTM A763-15

1.1.1 Practice 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).

1.1.2 Practice X-Ferric sulfate-sulfuric acid test for detecting susceptibility to intergranular attack in ferritic stainless steels (Sections 11 - 16).

1.1.3 Practice Y-Copper-copper sulfate-50 % sulfuric acid test for detecting susceptibility to intergranular attack in ferritic stainless steels (Sections 17 - 22).

1.1.4 Practice Z-Copper-copper sulfate-16 % sulfuric acid test for detecting susceptibility to intergranular attack in ferritic stainless steels (Sections 23 - 29).

1.2.1 Practice 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.

1.2.2 Practices X, Y, and Z can be used to detect the susceptibility of certain ferritic alloys to intergr

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03/01/2015

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Document History

ASTM A763-15(2021)

ASTM A763-15

ASTM A763-14

ASTM A763-93(2004)