ASTM A561-08
Standard Practice for Macroetch Testing of Tool Steel Bars
- Standard No.
- ASTM A561-08
- Release Date
- 2008
- Published By
- American Society for Testing and Materials (ASTM)
- Status
- Replace By
- ASTM A561-08(2014)
- Latest
- ASTM A561-08(2020)
- Scope
1.1 This 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 10× is occasionally employed.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
ASTM A561-08 history
- 2020 ASTM A561-08(2020) Standard Practice for Macroetch Testing of Tool Steel Bars
- 2008 ASTM A561-08(2014) Standard Practice for Macroetch Testing of Tool Steel Bars
- 2008 ASTM A561-08 Standard Practice for Macroetch Testing of Tool Steel Bars
- 1971 ASTM A561-71(2004) Standard Practice for Macrotech Testing of Tool Steel Bars
- 1971 ASTM A561-71(1999) Standard Recommended Practice for Macrotech Testing of Tool Steel Bars
