Norm

NEN-ISO 48:2010 en

Rubber, gevulcaniseerd of thermoplastisch - Bepaling van de hardheid (hardheid tussen 10 IRHD en 100 IRHD)

106,87

Over deze norm

Status Definitief
Aantal pagina's 23
Commissie Rubber
Gepubliceerd op 01-09-2010
Taal Engels
This International Standard specifies four methods for the determination of the hardness of vulcanized or thermoplastic rubbers on flat surfaces (standard-hardness methods) and four methods for the determination of the apparent hardness of curved surfaces (apparent-hardness methods). The hardness is expressed in international rubber hardness degrees (IRHD). The methods cover the hardness range from 10 IRHD to 100 IRHD. These methods differ primarily in the diameter of the indenting ball and the magnitude of the indenting force, these being chosen to suit the particular application. The range of applicability of each method is indicated in Figure 1. This International Standard does not specify a method for the determination of hardness by a pocket hardness meter, which is described in ISO 7619-2. This International Standard specifies the following four methods for the determination of standard hardness. - Method N (normal test) is appropriate for rubbers with a hardness in the range 35 IRHD to 85 IRHD, but can also be used for hardnesses in the range 30 IRHD to 95 IRHD. - Method H (high-hardness test) is appropriate for rubbers with a hardness in the range 85 IRHD to 100 IRHD. - Method L (low-hardness test) is appropriate for rubbers with a hardness in the range 10 IRHD to 35 IRHD. - Method M (microtest) is essentially a scaled-down version of the normal test method N, permitting the testing of thinner and smaller test pieces. It is appropriate for rubbers with a hardness in the range 35 IRHD to 85 IRHD, but can also be used for hardnesses in the range 30 IRHD to 95 IRHD.

Details

ICS-code 83.060
Nederlandse titel Rubber, gevulcaniseerd of thermoplastisch - Bepaling van de hardheid (hardheid tussen 10 IRHD en 100 IRHD)
Engelse titel Rubber, vulcanized or thermoplastic - Determination of hardness (hardness between 10 IRHD and 100 IRHD)
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