1.1This 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.
1.2The 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.
1.3This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ASTM A561-08(2024) History
ASTM A561-08(2024)
$30.00 $61.00
ASTM A561-08(2020)
$33.00 $66.00
ASTM A561-08(2014)
$26.00 $52.00
ASTM A561-08
$26.00 $52.00
More Standards PDF
ASTM C1479M-13
$30.00 $60.00
ASTM D7006-03(2013)
$32.00 $64.00
ASTM D5073-02(2013)
$34.00 $69.00
ASTM D3143/D3143M-13
$30.00 $60.00