NF ISO 48-8

NF ISO 48-8

December 2018
Standard Current

Rubber, vulcanized or thermoplastic - Determination of hardness - Part 8 : apparent hardness of rubber-covered rollers by Pusey and Jones method

This document specifies a method for the determination of the apparent hardness of vulcanized- or thermoplastic-rubber roller covers, expressed as the Pusey and Jones indentation value.The Pusey and Jones plastometer apparatus is used to measure the depth of indentation of an indentor under a specified force into the surface of the rubber. The indentation value is not the same as that measured by the international rubber hardness test method ISO 48-2, since in this method the rubber immediately adjacent to the indentor is precompressed. The Pusey and Jones indentation value is an inverse measurement of hardness, i.e. the harder the rubber the lower the Pusey and Jones indentation value.

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Main informations

Collections

National standards and national normative documents

Publication date

December 2018

Number of pages

14 p.

Reference

NF ISO 48-8

ICS Codes

83.060   Rubber
83.140.99   Other rubber and plastics products

Classification index

T46-003-8

Print number

1

International kinship

ISO 48-8:2018
Sumary
Rubber, vulcanized or thermoplastic - Determination of hardness - Part 8 : apparent hardness of rubber-covered rollers by Pusey and Jones method

This document specifies a method for the determination of the apparent hardness of vulcanized- or thermoplastic-rubber roller covers, expressed as the Pusey and Jones indentation value.

The Pusey and Jones plastometer apparatus is used to measure the depth of indentation of an indentor under a specified force into the surface of the rubber. The indentation value is not the same as that measured by the international rubber hardness test method ISO 48-2, since in this method the rubber immediately adjacent to the indentor is precompressed. The Pusey and Jones indentation value is an inverse measurement of hardness, i.e. the harder the rubber the lower the Pusey and Jones indentation value.

Replaced standards (1)
NF ISO 7267-3
November 2017
Standard Cancelled
Rubber-covered rollers - Determination of apparent hardness - Part 3 : pusey and Jones method

ISO 7267-3:2017 specifies a method for the determination of the apparent hardness of vulcanized- or thermoplastic-rubber roller covers, expressed as the Pusey and Jones indentation value. The Pusey and Jones plastometer apparatus is used to measure the depth of indentation of an indentor under a specified force into the surface of the rubber. The indentation value should not be confused with hardness as measured by the international rubber hardness test method ISO 48,[1] since in this method the rubber immediately adjacent to the indentor is precompressed. The Pusey and Jones indentation value is an inverse measurement of hardness, i.e. the harder the rubber the lower the Pusey and Jones indentation value.

Table of contents
  • Avant-propos
  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes et définitions
  • 4 Délai entre vulcanisation/rectification et essai
  • 5 Conditionnement et température d'essai
  • 6 Appareillage
  • 7 Étalonnage
  • 8 Mode opératoire
  • 9 Expression des résultats
  • 10 Rapport d'essai
  • Annexe A (normative) Programme d'étalonnage
  • Bibliographie
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