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UNI ISO 48 : 2011

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

RUBBER, VULCANIZED OR THERMOPLASTIC - DETERMINATION OF HARDNESS (HARDNESS BETWEEN 10 IRHD AND 100 IRHD)
Superseded date

27-09-2022

Published date

01-01-2011

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Test pieces
7 Time interval between vulcanization and testing
8 Conditioning of test pieces
9 Temperature of test
10 Procedure
11 Number of readings
12 Expression of results
13 Precision
14 Test report
Annex A (informative) - Empirical relationship between
        indentation and hardness
Annex B (informative) - Precision results from interlaboratory
        test programmes
Annex C (informative) - Guidance for using precision results
Bibliography

Describes 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).

DevelopmentNote
Supersedes UNI 7318. (05/2008)
DocumentType
Standard
PublisherName
Ente Nazionale Italiano di Unificazione (UNI)
Status
Superseded
SupersededBy
Supersedes

Standards Relationship
ISO 48:2010 Identical

UNI 7140 : 2013 GAS APPLIANCES FOR DOMESTIC USE - NON-METALLIC FLEXIBLE HOSES FOR GAS APPLIANCES FOR DOMESTIC USE AND SIMILAR
UNI 7319 : 2012 RUBBERS - TESTS OF VULCANIZED RUBBER - DETERMINATION OF INTERNATIONAL RUBBER HARDNESS ON TEST PIECES OF NONSTANDARD THICKNESS

ISO 7619-1:2010 Rubber, vulcanized or thermoplastic Determination of indentation hardness Part 1: Durometer method (Shore hardness)
ISO 7267-2:2008 Rubber-covered rollers Determination of apparent hardness Part 2: Shore-type durometer method
ISO 23529:2016 Rubber General procedures for preparing and conditioning test pieces for physical test methods
ISO 7267-3:2017 Rubber-covered rollers Determination of apparent hardness Part 3: Pusey and Jones method
ISO 7619-2:2010 Rubber, vulcanized or thermoplastic Determination of indentation hardness Part 2: IRHD pocket meter method
ISO 7743:2017 Rubber, vulcanized or thermoplastic Determination of compression stress-strain properties
ISO 18898:2016 Rubber Calibration and verification of hardness testers
ISO/TR 9272:2005 Rubber and rubber products Determination of precision for test method standards
ISO 7267-1:2017 Rubber-covered rollers Determination of apparent hardness Part 1: IRHD method
ISO 18517:2015 Rubber, vulcanized or thermoplastic Hardness testing Introduction and guide

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