BS 436-4:1996 - Spur and helical gears - Definitions and allowable values of deviations relevant to corresponding flanks of gear teeth
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BS 436-4:1996 is a British Standard that specifies the methods for the determination of the hardness of metals using a Brinell hardness test. This standard is part of the BS 436 series, which covers various aspects of Brinell hardness testing.
BS 436-4:1996 specifically focuses on the calibration of hardness testing machines and the verification of the accuracy of the test results. It provides guidelines on the selection and preparation of test pieces, the procedure for carrying out the Brinell hardness test, and the calculation of the Brinell hardness number.
The Brinell hardness test involves indenting a spherical indenter into the surface of a material under a specified load. The diameter of the resulting indentation is measured, and the Brinell hardness number is calculated based on the applied load and the diameter of the indentation. This test is commonly used for determining the hardness of metals and alloys.
Please note that the information provided is based on the knowledge available up to September 2021, and there may have been revisions or updates to the standard since then. It is always recommended to refer to the latest version of the standard for accurate and up-to-date information.
