Specifications of a method for the determination of the indentation hardness of plastics by means of the Rockwell hardness tester using the Rockwell M, L and R hardness scales. The Rockwell hardness number is derived from the net increase in depth of impression as the load on an indentor is increased from a fixed minor load to a major load and then returned to the same minor load. For materials having high creep and recovery, the time-factors involved in application of the major and minor loads have a considerable effect on the results of the measurements.
État actuel: PubliéeDate de publication: 1987-07Stade: Norme internationale confirmée [90.93]
Edition: 2Nombre de pages: 5
Comité technique :ISO/TC 61/SC 2ICS :83.080.01
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