ASTM A 561 : 1971 : R1999
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Standard Recommended Practice for Macrotech Testing of Tool Steel Bars
Hardcopy , PDF
11-11-2014
English
10-09-1999
Important note : Users cannot be edited or removed once added to your Multi user PDF.| Committee |
A 01
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| DocumentType |
Standard Practice
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| Pages |
2
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| ProductNote |
Reconfirmed 1999
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| PublisherName |
American Society for Testing and Materials
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| Status |
Superseded
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| SupersededBy |
1.1 This recommended practice for macroetch testing has been found to be a useful and reliable method for evaluating the quality of tool steel bars. It is used as a quality control and inspection test to reveal by deep acid etching the macrostructure in specimens cut from bars and to show the presence of such conditions as pipe, cracks, porosity, segregation, or foreign material. The etched surface is generally examined visually, but magnification up to about 10X is occasionally employed.
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