NORMSERVIS s.r.o.

ISO 2039-2:1987-ed.2.0

Plastics — Determination of hardness — Part 2: Rockwell hardness

NORMA vydána dne 2.7.1987

Anglicky -
Elektronické PDF (1402.30 CZK)
Anglicky -
Tištěné (1402.30 CZK)


Francouzsky -
Elektronické PDF (1402.30 CZK)
Francouzsky -
Tištěné (1402.30 CZK)

Informace o normě:

Označení normy: ISO 2039-2:1987-ed.2.0
Datum vydání normy: 2.7.1987
Počet stran: 5
Přibližná hmotnost: 15 g (0.03 liber)
Země: Mezinárodní technická norma
Kategorie: Technické normy ISO

Anotace textu normy ISO 2039-2:1987-ed.2.0 :

Description / 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.