• ASTM A262-14

ASTM A262-14

Standard Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels

ASTM International, 07/01/2014

Publisher: ASTM

File Format: PDF

$34.00$69.00


Published:01/07/2014

Pages:20

File Size:1 file , 980 KB

Note:This product is unavailable in Russia, Ukraine, Belarus

1.1 These practices cover the following five tests:

1.1.1 Practice A-Oxalic Acid Etch Test for Classification of Etch Structures of Austenitic Stainless Steels (Sections 4 to 13, inclusive),

1.1.2 Practice B-Ferric Sulfate-Sulfuric Acid Test for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels (Sections 14 to 25, inclusive),

1.1.3 Practice C-Nitric Acid Test for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels (Sections 26 to 36, inclusive),

1.1.4 Practice E-Copper-Copper Sulfate-Sulfuric Acid Test for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels (Sections 37 to 46, inclusive), and

1.1.5 Practice F-Copper-Copper Sulfate-50 % Sulfuric Acid Test for Detecting Susceptibility to Intergranular Attack in Molybdenum-Bearing Austenitic Stainless Steels (Sections 47 to 58, inclusive).

1.2 The oxalic acid etch test is a rapid method of identifying, by simple etching, those specimens of certain stainless steel grades that are essentially free of susceptibility to intergranular attack associated with chromium carbide precipitates. These specimens will have low corrosion rates in certain corrosion tests and therefore can be eliminated (screened) from testing as “acceptable.” The etch test is applicable only to those grades listed in the individual hot acid tests and classifies the specimens either as “acceptable” or as “suspect.”

1.3 The ferric sulfate-sulfuric acid test, the copper-copper sulfate-50 % sulfuric acid test, and the nitric acid test are based on weight loss determinations and, thus, provide a quantitative measure of the relative performance of specimens evaluated. In contrast, the copper-copper sulfate-16 % sulfuric acid test is based on visual examination of bend specimens and, therefore, classifies the specimens only as acceptable or nonacceptable.

1.4 The presence or absence of intergranular attack in these tests is not necessarily a measure of the performance of the material in other corrosive environments. These tests do not provide a basis for predicting resistance to forms of corrosion other than intergranular, such as general corrosion, pitting, or stress-corrosion cracking.

Note 1: See Appendix X1 for information regarding test selection.

1.5 The values stated in SI units are to be regarded as standard. The inch-pound equivalents are in parentheses and may be approximate.

1.6 This standard does not purport to address all of the safety concerns, 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. Some specific hazards statements are given in 10.1, 20.1.1, 20.1.9, 31.3, 34.4, 53.1.1, and 53.1.10.

More ASTM standard pdf

ASTM A387/A387M-17a

ASTM A387/A387M-17a

Standard Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum

$37.00 $75.00

ASTM E2567-16a

ASTM E2567-16a

Standard Test Method for Determining Nodularity And Nodule Count In Ductile Iron Using Image Analysis

$30.00 $60.00

ASTM F2067-07

ASTM F2067-07

Standard Practice for Development and Use of Oil-Spill Trajectory Models

$25.00 $50.00

ASTM A249/A249M-18

ASTM A249/A249M-18

Standard Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes

$29.00 $58.00