GB/T 40389-2021Sintered metal materials, excluding hardmetals - Measurement of surface roughness (English PDF)

1 Scope

This document specifies the measurement method for the surface roughness of sintered metal materials and establishes the principle of reasonable use of measurement parameters.

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations

Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to

This document.

ISO 4287 Product Geometric Technical Specification (GPS) Surface Structure. Profile Method Terms, Definitions and Surface Structure Parameters (GeometricalProductSpecification(GPS)-Surfacetexture.Profilemethod-Terms,definitionsand surfacetextureparameters)

ISO 13565-1 Product Geometric Technical Specification (GPS) Surface structure. Surface with composite processing features by profile method Part 1

Points. filtering and general measurement conditions (GeometricalProductSpecifications(GPS)-Surfacetexture.Profilemethod;

Surfacehavingstratifiedfunctionalproperties-Part 1.Filteringandgeneralmeasurementconditions)

ISO 13565-2 Product Geometric Technical Specification (GPS) Surface structure. Surface with composite processing features by profile method Part 2

Points. Use the linearized support rate curve to characterize the height characteristics (GeometricalProductSpecifications(GPS)-Surfacetexture.

Profilemethod;Surfaceshavingstratifiedfunctionalproperties-Part 2.Heightcharacterizationusing thelinearmaterialratiocurve)

ISO 13565-3 Product Geometric Technical Specification (GPS) Surface structure. Surface with composite processing features by profile method Part 3

Points. Use the probability support rate curve to characterize the height characteristics (GeometricalProductSpecifications(GPS)-Surfacetexture.Pro- filemethod;Surfaceshavingstratifiedfunctionalproperties-Part 3.Heightcharacterizationusingthe materialprobabilitycurve)

3 Terms and definitions

The terms and definitions defined by ISO 4287 apply to this document.

4 Symbols and units

The following symbols and units apply to this document. […]