BS 903-A26:1995

Superseded

View Superseded by

Physical testing of rubber Method for determination of hardness (hardness between 10 IRHD and 100 IRHD)

Available format(s)

Hardcopy , PDF

Superseded date

01-01-2007

Language(s)

English

Published date

08-15-2001

Publisher

British Standards Institution

Committees responsible
National foreword
Introduction
Method
1. Scope
2. Normative references
3. Principle
4. Definitions
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
Annexes
A. (normative) Empirical relationship between
     indentation and hardness
B. (informative) Guidance for using precision results
Tables
1. Forces and dimensions of apparatus
2. Minimum distance of point of contact from edge of
     test piece
3. Conversion of values of D into international rubber
     hardness degrees (IRHD) for use in method N
4. Conversion of values of D into international rubber
     hardness degrees (IRHD) for use in method H
5. Conversion of values of D into international rubber
     hardness degrees (IRHD) for use in method L
6. Type 1 precision, medium-hardness rubbers, method N
7. Type 1 precision, medium-hardness rubbers, method M
8. Type 1 precision, high-hardness rubbers, method N
9. Type 1 precision, high-hardness rubbers, method H
10. Type 1 precision, low-hardness rubber, method L
Figures
1. Range of applicability
A.1 Relationship between log 10E and hardness in IRHD
     from 3 to 100
A.2 Relationship between log 10E and hardness in IRHD
     from 3 to 40
A.3 Relationship between log 10E and hardness from 80
     to 100

Specifies four methods for the determination of the hardness of vulcanized or thermoplastic rubber.

Committee	PRI/22
DevelopmentNote	Also Numbered as ISO 48 (09/2001) Supersedes 86/44631 DC, 98/122128 DC and BS 903-A26(1969) Reviewed and confirmed by BSI, May, 2005. (04/2005)
DocumentType	Standard
Pages	20
PublisherName	British Standards Institution
Status	Superseded
SupersededBy	BS ISO 48:2010 BS ISO 48:2007
Supersedes	BS 903-A26:1969

ISO 3383:1985	Rubber — General directions for achieving elevated or subnormal temperatures for test purposes
ISO 4661-1:1993	Rubber, vulcanized or thermoplastic Preparation of samples and test pieces Part 1: Physical tests
ISO 1826:1981	Rubber, vulcanized Time-interval between vulcanization and testing Specification
ISO 471:1995	Rubber Temperatures, humidities and times for conditioning and testing
ISO/TR 9272:2005	Rubber and rubber products Determination of precision for test method standards