1.1Â The purpose of this test method is to define a method for analyzing the surface texture of the above-mentioned components using a scanning tunneling microscope (STM). STM is a noncontact method of surface profiling that can measure three-dimensional surface features in the nanometer size range, which can then be used to represent the surface texture or to provide figures of merit. Application of this test method, where surface texture is used as a selection criterion, is expected to yield comparable data among different components tested.
1.2.1 This test method is limited to characterization of stainless steel surfaces that are smoother than R a = 0.25 μm, as determined by a contact-stylus profilometer and defined by ANSI B46.1. The magnifications and height scales used in this test method were chosen with this smoothness in mind.
| SDO | ASTM: ASTM International |
| Document Number | F1438 |
| Publication Date | July 1, 2012 |
| Language | en - English |
| Page Count | 10 |
| Revision Level | 93(2012) |
| Supercedes | |
| Committee | F01.10 |