ISO 2039-2:1987 PDF
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Plastics — Determination of hardness — Part 2: Rockwell hardness
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.
| Edition | 1987 |
|---|---|
| Standard Part No | 2 |
| Published Date | 1987 |
| Published By | International Standardization Organisation |
| Page Count | 5 |
