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ASTM E384-07a

Historical Revision

Standard Test Method for Microindentation Hardness of Materials

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1.1 This test method covers determination of the microindentation hardness of materials, the verification of microindentation hardness testing machines, and the calibration of standardized test blocks.

1.2 This test method covers microindentation tests made with Knoop and Vickers indenters under test forces in the range from 9.8 × 10-3 to 9.8 N ( 1 to 1000 gf ).

1.3 This test method includes an analysis of the possible sources of errors that can occur during microindentation testing and how these factors affect the accuracy, repeatability, and reproducibility of test results.

Note 1—While Committee E04 is primarily concerned with metals, the test procedures described are applicable to other materials.

1.4 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.

Hardness tests have been found to be very useful for materials evaluation, quality control of manufacturing processes and research and development efforts. Hardness, although empirical in nature, can be correlated to tensile strength for many metals, and is an indicator of wear resistance and ductility.

Microindentation tests extend hardness testing to materials too thin or too small for macroindentation tests. Microindentation tests allow specific phases or constituents and regions or gradients too small for macroindentation testing to be evaluated.

Because the microindentation hardness will reveal hardness variations that may exist within a material, a single test value may not be representative of the bulk hardness.

SDO ASTM: ASTM International
Document Number E384
Publication Date Dec. 15, 2007
Language en - English
Page Count 33
Revision Level 07a
Supercedes
Committee E04.05
Publish Date Document Id Type View
Oct. 1, 2022 E0384-22 Revision
June 1, 2017 E0384-17 Revision
Feb. 1, 2016 E0384-16 Revision
Aug. 1, 2011 E0384-11E01 Revision
Aug. 1, 2011 E0384-11 Revision
Feb. 1, 2010 E0384-10E02 Revision
Feb. 1, 2010 E0384-10E01 Revision
Feb. 1, 2010 E0384-10 Revision
May 1, 2009 E0384-09 Revision
March 15, 2008 E0384-08AE01 Revision
March 15, 2008 E0384-08A Revision
Jan. 1, 2008 E0384-08 Revision
Dec. 15, 2007 E0384-07A Revision
July 1, 2007 E0384-07 Revision
Nov. 15, 2006 E0384-06 Revision
Aug. 15, 2005 E0384-05A Revision
July 1, 2005 E0384-05 Revision
Nov. 10, 1999 E0384-99E01 Revision
Nov. 10, 1999 E0384-99 Revision