DIN Standards Committee Plastics
Plastics - Determination of hardness - Part 2: Rockwell hardness
Abstract
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.
Begin
2024-12-11
WI
00249A6W
Planned document number
prEN ISO 2039-2 rev
Responsible national committee
NA 054-01-02 AA - Mechanical properties and preparation of test specimens
Responsible european committee
previous edition(s)
Plastics - Determination of hardness - Part 2: Rockwell hardness (ISO 2039-2:1987)
1999-06
