Introduction to ASTM C1327
In the ASTM C1327 test method, Vickers indenters are employed for the production of indentations, from which the surface projected diagonal lengths are gauged using an optical microscope. These indentations from square impressions, enable the measurement of two surface projected diagonal lengths. Typically, the Vickers hardness of ceramics tends to decline as the indentation size or indentation force increases. The Vickers hardness is determined by the ratios of the applied force to the contact area of the four faces of the indenter before deformation. MaTestLab is one of the best testing service providers, with the best network of testing laboratories in the USA to carry out ASTM C1327 tests for our clients. In the ASTM C1327 test method, a complete hardness characterization involves conducting measurements across a spectrum of indentation forces.
ASTM C1327 Test Method
| Indentation Procedure | In the ASTM C1327 test method, the Vickers indentation hardness is determined by the calculation of the usual diagonal size of the indentation and the ratio of the applied force to the contact surface area. The distance between the centers of the indentation is four diagonals. |
| Measurement | The indent is measured immediately after being made. The accuracy is highly dependent on the measurement. A precise stage micrometer calibrates the measuring system. |
ASTM C1327 Test Specimens
| Specimen Detail | The ASTM C1327 specimen has a smooth surface, and its back is fixed so that it cannot rock or shift during the test. |
| Specimen Size | Typically, the specimen size is at least 0.50 mm, and the specimen size is over ten times thicker than the depth of the indentation. |
ASTM C1327 Test Results
To sum up, in the ASTM C1327 test method, the indentation hardness test is performed by the use of a calibrated machine to force a pointed as well as a square base with a pyramidal diamond indenter consisting of specified face angles under a predetermined load to the surface of the material that is being tested and for the measurement of the surface-projected diagonals of the resulting impression obtained after removing the load.
ASTM C1327 Related Tests
The ASTM C1327 test method is related to ASTM E384, which tests materials’ micro indentation hardness, and ASTM E177 is used for precision and bias.
