Designation

This standard is issued under the fixed designation E384; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (ε) indicates an editorial change since the last revision or reapproval.

This standard has been approved for use by agencies of the U.S. Department of Defense.

1. Scope*

1.1

This test method covers determination of the microindentation hardness of materials.

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 precision, bias, repeatability, and reproducibility of test results.

1.4

Information pertaining to the requirements for direct verification and calibration of the testing machine and the requirements for the manufacture and calibration of Vickers and Knoop reference hardness test blocks are in Test Method E92.

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

1.5

Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.6

This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.7

This 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.

2. Referenced Documents

2.1

2.2

3. Terminology

3.1

3.2

3.3

3.4

4. Summary of Test Method

4.1

4.2

4.3

4.4

4.5

5. Significance and Use

5.1

5.2

5.3

5.4

6. Apparatus

6.1

6.2

6.3

6.4

7. Test Specimen

7.1

7.2

8. Procedure

8.1

8.2

8.3

8.4

8.5

8.6

8.7

8.8

8.9

8.10

8.11

8.12

8.13

9. Report

9.1

9.2

9.3

10. Precision and Bias

10.1

10.2

10.3

10.4

10.5

10.6

10.7

10.8

11. Conversion to Other Hardness Scales or Tensile Strength Values

11.1

12. Keywords

12.1

REFERENCES

ASTM E384 - 22

Standard Test Method for Microindentation Hardness of Materials

Current

Published:

1 Oct 2022

1. Scope*