BS EN ISO 4884:2019 pdf free
/FREESPACE2ULSTANDARDSPDF/ISO/BS-EN-ISO-4884-2019.rar
This document specifies procedures for the sampling and testing of powder mixtures for the manufacture of hardmetals, using sintered test pieces. It also covers the preparation of test pieces.
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 3327, Hardmetals一Determination of transverse rupture strength
ISO 3369, Impermeable sintered metal materials and hardmetals一Determination of density
ISO 3738-1, Hardmetals一Rockwell hardness test (scale A)一Part 1: Test method
ISO 3738-2, Hardmetals一Rockwell hardness test (scale A)一Part 2: Preparation and calibration of standard test blocks
ISO 3954, Powders for powder metallurgical purposes一Sampling
ISO 4499-1, Hardmetals一Metallographic determination of microstructure一Part 1: Photomicrographs and description
IS0 4499-2, Hardmetals一Metallographic determination of microstructure一Part 2: Measurement of WC grain size
ISO 4499-3, Hardmetals一Metallographic determination of microstructure一Part 3: Measurement of microstructural features in Ti (C, N) and WC/cubic carbide based hardmetals
ISO 4499-4, Hardmetals一Metallographic determination of microstructure一Part 4: Characterisation of porosity, carbon defects and eta-phase content
ISO 6507-1, Metallic materials一Vickers hardness test一Part 1: Test method
ISO 6507-2, Metallic materials 一Vickers hardness test一Part 2: Verification and calibration of testing machines
ISO 6507-3, Metallic materials一Vickers hardness test一Part 3: Calibration of reference blocks
ISO 6507-4, Metallic materials一Vickers hardness test一Part 4: Tables of hardness values
ISO 28079, Hardmetals一Palmqvist toughness test
The test pieces shall be processed from the test sample in conformity with their grade and dimensions. All the test pieces for each type of testing shall be sintered simultaneously under the same conditions and in the same furnace.
To ensure that the characteristics of the test pieces prepared from the lot of powder are significant,the appropriate manufacturing conditions shall be used in the production of the test pieces.
The dimensions of the test pieces shall comply with the requirements of the relevant International Standards specified in Table 1. For the determination of porosity, one or more test pieces shall be sectioned to enable a total area of not less than 1 cm2 to be examined.BS EN ISO 4884 pdf free download.
