EN ISO 868:1997

Plastics and ebonite - Determination of indentation hardness by means of a durometer (Shore hardness) (ISO 868:1985)

Kunststoffe und Hartgummi - Bestimmung der Eindruckhärte mit einem Durometer (Shore-Härte) (ISO 868:1985)

1.1  Diese Internationale Norm gibt eine Methode zur Bestimmung der Eindruckhärte von Kunststoffen und Hartgummi durch zwei Typen von Durometern an : Durometer Typ A wird für weichere Materialien verwendet, Durometer Typ B für härtere Materialien  (s. Bemerkung unter 8.2). Die Methode erlaubt entweder die Messung des Anfangeindrucks oder des Eindrucks nach einer vorgeschriebenen Zeitspanne oder beides.

Plastiques et ébonite - Détermination de la dureté par pénétration au moyen d'un duromètre (dureté Shore) (ISO 868:1985)

Polimerni materiali in ebonit - Določanje trdote po Shoru (ISO 868:1985)

General Information

• Status: Withdrawn
• Publication Date: 18-Nov-1997
• Withdrawal Date: 28-Feb-2003
• ICS: 83.080 - Plastics
• Technical Committee: CEN/TC 249 - Plastics
• Drafting Committee: CEN/TC 249/SC 1/WG 3 - Mechanical properties and preparation of test specimens
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 01-Mar-2003
• Completion Date: 01-Mar-2003
• Ref Project: SIST EN ISO 868:2000 - Plastics and ebonite - Determination of indentation hardness by means of a durometer (Shore hardness) (ISO 868:1985)

Relations

• Replaced By: EN ISO 868:2003 - Plastics and ebonite - Determination of indentation hardness by means of a durometer (Shore hardness) (ISO 868:2003)
• Effective Date: 22-Dec-2008

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 868:2000
01-maj-2000
3ROLPHUQLPDWHULDOLLQHERQLW'RORþDQMHWUGRWHSR6KRUX,62
Plastics and ebonite - Determination of indentation hardness by means of a durometer
(Shore hardness) (ISO 868:1985)
Kunststoffe und Hartgummi - Bestimmung der Eindruckhärte mit einem Durometer
(Shore-Härte) (ISO 868:1985)
Plastiques et ébonite - Détermination de la dureté par pénétration au moyen d'un
durometre (dureté Shore) (ISO 868:1985)
Ta slovenski standard je istoveten z: EN ISO 868:1997
ICS:
83.080.01 Polimerni materiali na Plastics in general
splošno
SIST EN ISO 868:2000 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 868:2000

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SIST EN ISO 868:2000

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SIST EN ISO 868:2000

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SIST EN ISO 868:2000

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SIST EN ISO 868:2000

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SIST EN ISO 868:2000
International Standard
INTERNATIONAL ORGANIZATION FOR STANDARDIZATlON*ME>KL1YHAPO~HAR OPTAHM3AUMR IlO CTAH~APTkl3A~MlWORGANlSATiON INTERNATIONALE DE NORMALISATION
Determination of indentation
Plastics and ebonite -
hardness by means of a durometer (Shore hardness)
Plastiques et gbonite - D&termination de la durett! par p&x!tra tion au mo yen d’un durom&tre fdureth Shore)
Second edition - 1985-09-15
UDC 678.5/.8 : 620.178.15
Ref. No. IS0 8684985 (E)
-
8
Descriptors : plastics, ebonite, tests, hardness tests, indentation hardness tests, determination,
Shore hardness, test equipment, hardness
; a
F
I testers.
8
0
52
Price based on 3 pages

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SIST EN ISO 868:2000
Foreword
IS0 (the International Organization for Standardization) is a worldwide federation of
national standards bodies (IS0 member bodies). The work of preparing International
Standards is normally carried out through IS0 technical committees. Each member
body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, govern-
mental and non-governmental, in liaison with ISO, also take part in the work.
Draft International Standards adopted by the technical committees are circulated to
the member bodies for approval before their acceptance as International Standards by
the IS0 Council. They are approved in accordance with IS0 procedures requiring at
least 75 % approval by the member bodies voting.
International Standard IS0 868 was prepared by Technical Committee ISO/TC 61,
Plastics.
IS0 868 was first published in 1978. This second edition cancels and replaces the first
edition, of which it constitutes a technical revision.
0
0 International Organization for Standardization, 1985
Printed in Switzerland

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SIST EN ISO 868:2000
IS0 8684985 (E)
INTERNATIONAL STANDARD
Plastics and ebonite - Determination of indentation
hardness by means of a durometer (Shore hardness)
4 Apparatus
1 Scope and field of application
Shore durometers, types A and D. The durometers consist of
1.1 This International Standard specifies a method for the
the following components:
determination of the indentation hardness of plastics and
ebonite by means of durometers of two types: durometer type
A is used for softer materials and durometer type D for harder
4.1 Presser foot, with a hole of diameter between 2,5 and
materials (see the note in 8.2). The method permits measure-
3,5 mm, centred at least 6 mm from any edge of the foot.
ment either of the initial indentation or of the indentation after a
specified period of time, or both.
4.2 Indenter, formed from a hardened steel rod of diameter
between 1 JO and I,40 mm, to the shape and dimensions
NOTE - The durometers and the methods specified in this Inter-
shown in figure 1, for type A durometers, and figure 2, for
national Standard are referred to as type A Shore and type D Shore
type D durometers.
durometers and durometer methods respectively.
1.2 This method is an empirical test intended primarily for 4.3 Indicating device, for reading the extent of protrusion
control purposes. No simple relationship exists between inden- of the point of the indenter beyond the face of the presser foot;
tation hardness determined by this method and any fundamen- this may be read directly in terms of units ranging from 0, for
tal property of the material tested. For specification purposes, it the full protrusion of 250 + 0,04 mm, to 100 for nil protrusion
is recommended that IS0 48, Vulcanized rubbers - Deter- obtained by placing the pressure foot and indenter in firm con-
mination of hardness (hardness between 30 and 85 IRHD),
tact with a flat piece of glass.
should be used for the softer materials.
NOTE - The device may include means for indicating the initial inden-
tation obtained when the indenter is applied under load, to provide
a maximum reading for use as an instantaneous reading if required
2 References
(see 8.1).
IS0 291, Plastics - Standard atmospheres for conditioning
and testing.
4.4 Calibrated spring, for applying force to the indenter in
accordance with one of the following equations:
Determination of indentation hardness by
IS0 7619, Rubber -
means of pocket hardness meters. 1 )
a) F= 550 + 75 HA
where
3 Principle
F is the applied force, in millinewtons;
Measurement of the penetration of a specified indenter forced
into the material under specified conditions.
HA is the hardness reading on the type A durometer.
The indentation hardness is inversely related to the penetration
b) F=445H,,
and is dependent on the modulus of elasticity and the
viscoelastic properties of the material. The shape of the in-
denter, the force applied to it and the duration of its application where
influence the results obtained so that there may be no simple
relationship between the results obtained with one type of
F is the applied force, in millinewtons;
durometer and those obtained
...