BS ISO 4384-1 pdf free download
BS ISO 4384-1-2019 pdf free download.Plain bearings一Hardness testing of bearing metals Part 1: Multilayer bearings materials.
This document specifies parameters for the hardness testing of compound materials for plain bearings made from steel and bearing metal with bearing metals based on copper and aluminium, manufactured by casting, sintering or bonding. It represents a supplement to the existing ISO publications on hardness testing and, therefore, includes only the extensions and restrictions to be observed compared to those publications.
The measuring method applied depends on the bearing metal layer thickness, its hardness and its structure.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 6506-1, Metallic materials — Brinell hardness test — Part 1: Test method
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
4 Specimen
The surface of the specimen in the test area shall be bright metallic and conditioned in such a way that a satisfactory measurement of the test impression is possible. During the preparation of the specimens, it shall be ensured that the material is not heated.
The test surface shall be plane in accordance with ISO 6506-1.
Contrary to ISO 6506-1, the thickness of the test piece shall be at least four times the depth of indentation.
5 Procedure
The test conditions shall be as given in Table 1.
6 Test report
The test report shall include the following information:
a) reference to this document, i.e. ISO 4384-1:2019;
b) all details necessary for identification of the test sample;
c) test conditions and result obtained;
d) all operations not specified by this document, or regarded as optional;
e) details of any occurrence which might have affected the result.
NOTE 1There is no general process of accurately converting Brinell hardness into other scales of hardness or into tensile strength. These conversions, therefore, are intended to be avoided, unless a reliable basis for the conversion can be obtained by comparison tests.
NOTE2 Note that for anisotropic materials, for example those which have been heavily cold-worked, there will be a difference between the lengths of the two diameters of the indentation. The specification for the product can indicate limits for such differences.BS ISO 4384-1 pdf download.
