DIN EN ISO 14577-4:2007 Metallic materials - Instrumented indentation test for hardness and materials parameters - Part 4: Test method for metallic and non-metallic coatings (ISO 14577-4:2007); English version of DIN EN ISO 14577-4:2007-08
This part of ISO 14577 specifies a method for testing coatings which is particularly suitable for testing in the
nano/micro range applicable to thin coatings.
This test method is limited to the examination of single layers when the indentation is carried out normal to the
test piece surface, but graded and multilayer coatings can also be measured in cross-section if the thickness
of the individual layers or gradations is greater than the spatial resolution of the indentation process.
The test method is not limited to any particular type of material. Metallic, non-metallic and organic coatings are
included in the scope of this part of ISO 14577.
The application of this part of ISO 14577 regarding measurement of hardness is only possible if the indenter is
a pyramid or a cone with a radius of tip curvature small enough for plastic deformation to occur within the
coating. The hardness of visco-elastic materials, or materials exhibiting significant creep will be strongly
affected by the time taken to perform the test.
NOTE 1 ISO 14577-1, ISO 14577-2 and ISO 14577-3 define usage of instrumented indentation testing of bulk
materials over all force and displacement ranges.
NOTE 2 The application of the method of this part of ISO 14577 is not needed if the indentation depth is so small that
in any possible case a substrate influence can be neglected and the coating can be considered as a bulk material. Limits
for such cases are given.
NOTE 3 The analysis used here does not make any allowances for pile-up or sink-in of indents. Use of Atomic Force
Microscopy (AFM) to assess the indent shape allows the determination of possible pile-up or sink-in of the surface around
the indent. These surface effects result in an under-estimate (pile-up) or over-estimate (sink-in) of the contact area in the
analysis and hence may influence the measured results. Pile-up generally occurs for fully work-hardened materials. Pile-
up of soft, ductile materials is more likely for thinner coatings due to the constraint of the stresses in the zone of plastic
deformation in the coating. It has been reported that the piled up material results in an effective increase of the contact
area for the determination of hardness, while the effect is less pronounced for the determination of indentation modulus,
since the piled up material behaves less rigidly [1], [2].
DIN EN ISO 14577-4:2007 Referenced Document
EN ISO 14577-1 Metallic materials - Instrumented indentation test for hardness and materials parameters - Part 1: Test method (ISO 14577-1:2015)*, 2015-07-01 Update
EN ISO 14577-2 Metallic materials - Instrumented indentation test for hardness and materials parameters - Part 2: Verification and calibration of testing machines*, 2015-07-01 Update
EN ISO 14577-3 Metallic materials - Instrumented indentation test for hardness and materials parameters - Part 3: Calibration of reference blocks (ISO 14577-3:2015)*, 2015-07-01 Update
ISO 1514 Paints and varnishes - Standard panels for testing*, 2016-08-01 Update
ISO 2808 Paints and varnishes — Determination of film thickness*, 2019-07-26 Update
ISO 3270 Paints and varnishes and their raw materials; Temperatures and humidities for conditioning and testing
2017DIN EN ISO 14577-4:2017-04 Metallic materials - Instrumented indentation test for hardness and materials parameters - Part 4: Test method for metallic and non-metallic coatings (ISO 14577-4:2016); German version EN ISO 14577-4:2016
2017DIN EN ISO 14577-4:2017 Metallic materials - Instrumented indentation test for hardness and materials parameters - Part 4: Test method for metallic and non-metallic coatings (ISO 14577-4:2016); German version EN ISO 14577-4:2016
2007DIN EN ISO 14577-4:2007 Metallic materials - Instrumented indentation test for hardness and materials parameters - Part 4: Test method for metallic and non-metallic coatings (ISO 14577-4:2007); English version of DIN EN ISO 14577-4:2007-08