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ISO 3387:2020

Rubber — Determination of crystallization effects by hardness measurements

Mar 2, 2020

General information

90.92     Aug 11, 2025

ISO

ISO/TC 45/SC 2

International Standard

83.060  

English   French  

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Scope

This document specifies a test based on hardness measurements for determining the progressive stiffening of rubber with time, caused by crystallization. It is limited to materials having an initial hardness at a test temperature of from 10 IRHD to 85 IRHD.
The method is applicable to raw, unvulcanized (compounded) and vulcanized rubber. It is mainly of interest for rubber with a marked crystallization tendency at temperatures experienced in cold climates, such as chloroprene and natural rubber.
The method is not applicable to fast-crystallizing materials which crystallize to a considerable degree within the timespan of 15 min used for conditioning at test temperature.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 3387:2012

NOW

PUBLISHED
ISO 3387:2020
90.92 Standard to be revised
Aug 11, 2025

REVISED BY

IN_DEVELOPMENT
ISO/DIS 48-10