SIST EN ISO 1133:2005
(Main)Plastics - Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastics (ISO 1133:2005)
Plastics - Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastics (ISO 1133:2005)
ISO 1133:2005 specifies two procedures for the determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastic materials under specified conditions of temperature and load. One is a mass-measurement method. The other is a displacement-measurement method. Normally, the test conditions for measurement of melt flow rate are specified in the material standard with a reference to ISO 1133. The test conditions normally used for thermoplastics are listed in annexes.
These methods are in principle also applicable to thermoplastics for which the rheological behaviour is affected during the measurement by phenomena such as hydrolysis, condensation or crosslinking, but only if the effect is limited in extent and only if the repeatability and reproducibility are within an acceptable range. For materials which show significantly affected rheological behaviour during testing, these methods are not appropriate. In such cases, the use of the viscosity number in dilute solution, determined in accordance with the relevant part of ISO 1628, is recommended for characterization purposes.
Kunststoffe - Bestimmung der Schmelze-Massefließrate (MFR) und der Schmelze-Volumenfließrate (MVR) von Thermoplasten (ISO 1133:2005)
Dieses Dokument legt zwei Verfahren für die Bestimmung der Schmelze-Massefließrate (MFR) und der Schmelze-Volumenfließrate (MVR) von thermoplastischen Materialien unter festgelegten Bedingungen für Temperatur und Belastung fest. Verfahren A dient zum Bestimmen der Masse. Verfahren B ist ein Messverfahren für die Weglänge. Üblicherweise sind die Prüfbedingungen für die Messung der Schmelze-Massefließrate oder Schmelze-Volumenfließrate in der Werkstoffnorm mit einem Verweis auf dieses Dokument festgelegt. Die üblicherweise für Thermoplaste angewendeten Bedingungen sind in den Anhängen A und B aufgelistet.
Die MVR erweist sich beim Vergleichen von Werkstoffen mit unterschiedlichen Füllstoffanteilen und beim Vergleichen von gefüllten und ungefüllten Thermoplasten als besonders nützlich. Die MFR kann, falls die Dichte der Schmelze bei der Prüftemperatur und dem Prüfdruck bekannt ist, aus automatischen MVR-Messungen bestimmt werden.
Diese Verfahren sind im Prinzip auch anwendbar auf Thermoplaste, deren rheologisches Verhalten während der Messung durch z. B. Hydrolyse, Kondensation oder Vernetzung beeinflusst wird, jedoch nur dann, wenn diese Beeinflussung begrenzt ist und wenn die Wiederhol- und Vergleichpräzision innerhalb des zulässigen Bereiches liegen. Für Werkstoffe, die bei der Prüfung ein deutlich beeinflusstes rheologisches Verhalten aufweisen, ist diese Prüfung nicht geeignet. In diesen Fällen wird empfohlen, zur Kennzeichnung die Viskositätszahl in verdünnter Lösung, bestimmt nach dem entsprechenden Titel von ISO 1628, zu verwenden.
ANMERKUNG Die Schergeschwindigkeiten in diesen Verfahren sind wesentlich kleiner als diejenigen unter normalen Verarbeitungsbedingungen, und daher korrelieren die Ergebnisse, die mit diesen Verfahren für die verschiedenen Thermoplaste erhalten wurden, nicht immer mit ihrem Verhalten bei der Verarbeitung. Beide Verfahren werden in erster Linie zur Qualitätskontrolle verwendet.
Plastiques - Détermination de l'indice de fluidité a chaud des thermoplastiques, en masse (MFR) et en volume (MVR) (ISO 1133:2005)
L'ISO 1133:2005 spécifie deux modes opératoires pour la détermination de l'indice de fluidité à chaud des matériaux thermoplastiques, en masse (MFR) et en volume (MVR), dans des conditions définies de température et de charge. Le mode opératoire A est une méthode de mesurage de la masse, le mode opératoire B une méthode de mesurage du volume déplacé. En principe, les conditions d'essai pour la détermination du MFR sont spécifiées dans la norme relative au matériau avec une référence à l'ISO 1133. Les conditions normalement utilisées pour l'essai des matériaux thermoplastiques sont résumées dans les annexes.
Ces méthodes sont en principe également applicables aux thermoplastiques dont le comportement rhéologique pendant le mesurage est affecté de manière limitée par des phénomènes tels que l'hydrolyse, la condensation et la réticulation mais uniquement si la répétabilité et la reproductibilité sont comprises dans des limites acceptables pour ces méthodes. Elles ne s'appliquent pas aux matières dont le comportement rhéologique varie de façon significative pendant les essais. Dans ce cas, il est recommandé de procéder à la caractérisation en utilisant l'indice de viscosité en solution diluée conformément à la partie pertinente de l'ISO 1628.
Polimerni materiali - Ugotavljanje masnega (MFR) in volumskega pretoka taline (MVR) plastomerov (ISO 1133:2005)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 1133:2005
01-oktober-2005
1DGRPHãþD
SIST EN ISO 1133:2000
Polimerni materiali - Ugotavljanje masnega (MFR) in volumskega pretoka taline
(MVR) plastomerov (ISO 1133:2005)
Plastics - Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate
(MVR) of thermoplastics (ISO 1133:2005)
Kunststoffe - Bestimmung der Schmelze-Massefließrate (MFR) und der Schmelze-
Volumenfließrate (MVR) von Thermoplasten (ISO 1133:2005)
Plastiques - Détermination de l'indice de fluidité a chaud des thermoplastiques, en
masse (MFR) et en volume (MVR) (ISO 1133:2005)
Ta slovenski standard je istoveten z: EN ISO 1133:2005
ICS:
83.080.20 Plastomeri Thermoplastic materials
SIST EN ISO 1133:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 1133:2005
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SIST EN ISO 1133:2005
EUROPEAN STANDARD
EN ISO 1133
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2005
ICS 83.080.20 Supersedes EN ISO 1133:1999
English version
Plastics - Determination of the melt mass-flow rate (MFR) and
the melt volume-flow rate (MVR) of thermoplastics (ISO
1133:2005)
Plastiques - Détermination de l'indice de fluidité à chaud Kunststoffe - Bestimmung der Schmelze-Massefließrate
des thermoplastiques, en masse (MFR) et en volume (MFR) und der Schmelze-Volumenfließrate (MVR) von
(MVR) (ISO 1133:2005) Thermoplasten (ISO 1133:2005)
This European Standard was approved by CEN on 19 May 2005.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 1133:2005: E
worldwide for CEN national Members.
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SIST EN ISO 1133:2005
EN ISO 1133:2005 (E)
Foreword
This document (EN ISO 1133:2005) has been prepared by Technical Committee ISO/TC 61
"Plastics" in collaboration with Technical Committee CEN/TC 249 "Plastics", the secretariat of
which is held by IBN.
This European Standard shall be given the status of a national standard, either by publication of
an identical text or by endorsement, at the latest by December 2005, and conflicting national
standards shall be withdrawn at the latest by December 2005.
This document supersedes EN ISO 1133:1999.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Endorsement notice
The text of ISO 1133:2005 has been approved by CEN as EN ISO 1133:2005 without any
modifications.
2
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SIST EN ISO 1133:2005
INTERNATIONAL ISO
STANDARD 1133
Fourth edition
2005-06-01
Plastics — Determination of the melt
mass-flow rate (MFR) and the melt
volume-flow rate (MVR) of thermoplastics
Plastiques — Détermination de l'indice de fluidité à chaud des
thermoplastiques, en masse (MFR) et en volume (MVR)
Reference number
ISO 1133:2005(E)
©
ISO 2005
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SIST EN ISO 1133:2005
ISO 1133:2005(E)
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ii © ISO 2005 – All rights reserved
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SIST EN ISO 1133:2005
ISO 1133:2005(E)
Contents Page
Foreword. iv
1 Scope. 1
2 Normative references. 1
3 Terms and definitions. 2
4 Principle. 3
5 Apparatus. 3
5.1 Extrusion plastometer. 3
5.2 Accessory equipment. 6
6 Test sample. 7
6.1 Sample form. 7
6.2 Conditioning. 7
7 Temperature-calibration, cleaning and maintenance of the apparatus . 7
7.1 Calibration of the temperature-control system . 7
7.2 Cleaning the apparatus . 8
8 Procedure A: mass-measurement method . 8
8.1 Selection of temperature and load. 8
8.2 Cleaning. 8
8.3 Selection of sample mass and charging cylinder . 8
8.4 Measurements. 9
8.5 Expression of results . 10
9 Procedure B: displacement-measurement method . 10
9.1 Selection of temperature and load. 10
9.2 Minimum piston displacement distance. 10
9.3 Timer. 11
9.4 Preparation for the test . 11
9.5 Measurements. 11
9.6 Expression of results . 11
10 Flow rate ratio (FRR). 12
11 Precision. 12
12 Test report. 13
Annex A (normative) Test conditions for MFR and MVR determinations . 14
Annex B (informative) Conditions specified in International Standards for the determination of the
melt flow rate of thermoplastic materials. 15
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SIST EN ISO 1133:2005
ISO 1133:2005(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
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, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 1133 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 5, Physical-chemical
properties.
This fourth edition cancels and replaces the third edition (ISO 1133:1997), in which the clauses relating to
temperature control have been revised. In addition, the clarity of the text has been improved.
iv © ISO 2005 – All rights reserved
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SIST EN ISO 1133:2005
INTERNATIONAL STANDARD ISO 1133:2005(E)
Plastics — Determination of the melt mass-flow rate (MFR) and
the melt volume-flow rate (MVR) of thermoplastics
1 Scope
This International Standard specifies two procedures for the determination of the melt mass-flow rate (MFR)
and the melt volume-flow rate (MVR) of thermoplastic materials under specified conditions of temperature and
load. Procedure A is a mass-measurement method. Procedure B is a displacement-measurement method.
Normally, the test conditions for measurement of melt flow rate are specified in the material standard with a
reference to this International Standard. The test conditions normally used for thermoplastics are listed in
Annexes A and B.
The MVR will be found particularly useful when comparing materials of different filler content and when
comparing filled with unfilled thermoplastics. The MFR can be determined from MVR measurements provided
the melt density at the test temperature and pressure is known.
These methods are in principle also applicable to thermoplastics for which the rheological behaviour is
affected during the measurement by phenomena such as hydrolysis, condensation or crosslinking, but only if
the effect is limited in extent and only if the repeatability and reproducibility are within an acceptable range.
For materials which show significantly affected rheological behaviour during testing, these methods are not
appropriate. In such cases, the use of the viscosity number in dilute solution, determined in accordance with
the relevant part of ISO 1628, is recommended for characterization purposes.
NOTE The rates of shear in these methods are much smaller than those used under normal conditions of processing,
and therefore data obtained by these methods for various thermoplastics may not always correlate with their behaviour
during processing. Both methods are used primarily in quality control.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 1622-2, Plastics — Polystyrene (PS) moulding and extrusion materials — Part 2: Preparation of test
specimens and determination of properties
ISO 1628 (all parts), Plastics — Determination of the viscosity of polymers in dilute solution using capillary
viscometers
ISO 1872-2, Plastics — Polyethylene (PE) moulding and extrusion materials — Part 2: Preparation of test
specimens and determination of properties
ISO 1873-2, Plastics — Polypropylene (PP) moulding and extrusion materials — Part 2: Preparation of test
specimens and determination of properties
ISO 2580-2, Plastics — Acrylonitrile-butadiene-styrene (ABS) moulding and extrusion materials — Part 2:
Preparation of test specimens and determination of properties
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SIST EN ISO 1133:2005
ISO 1133:2005(E)
ISO 2897-2, Plastics — Impact-resistant polystyrene (PS-I) moulding and extrusion materials — Part 2:
Preparation of test specimens and determination of properties
ISO 4287, Geometrical Product Specifications (GPS) — Surface texture: Profile method — Terms, definitions
and surface texture parameters
ISO 4613-2, Plastics — Ethylene/vinyl acetate (E/VAC) moulding and extrusion materials — Part 2:
Preparation of test specimens and determination of properties
ISO 4894-2, Plastics — Styrene/acrylonitrile (SAN) moulding and extrusion materials — Part 2: Preparation of
test specimens and determination of properties
ISO 6402-2, Plastics — Acrylonitrile-styrene-acrylate (ASA), acrylonitrile-(ethylene-propylene-diene)-styrene
(AEPDS) and acrylonitrile-(chlorinated polyethylene)-styrene (ACS) moulding and extrusion materials —
Part 2: Preparation of test specimens and determination of properties
ISO 6507-1, Metallic materials — Vickers hardness test — Part 1: Test method
ISO 7391-2, Plastics — Polycarbonate (PC) moulding and extrusion materials — Part 2: Preparation of test
specimens and determination of properties
ISO 8257-2, Plastics — Poly(methyl methacrylate) (PMMA) moulding and extrusion materials — Part 2:
Preparation of test specimens and determination of properties
ISO 8986-2, Plastics — Polybutene (PB) moulding and extrusion materials — Part 2: Preparation of test
specimens and determination of properties
ISO 9988-2, Plastics — Polyoxymethylene (POM) moulding and extrusion materials — Part 2: Preparation of
test specimens and determination of properties
ISO 10366-2, Plastics — Methyl methacrylate-acrylonitrile-butadiene-styrene (MABS) moulding and extrusion
materials — Part 2: Preparation of test specimens and determination of properties
ISO 15494, Plastic piping systems for industrial applications — Polybutene (PB), polyethylene (PE) and
polypropylene (PP) — Specifications for components and the system — Metric series
ISO 15876-3, Plastics piping systems for hot and cold water installations — Polybutylene (PB) — Part 3:
Fittings
3 Terms and definitions
For the purpose of this document, the following terms and definitions apply.
3.1
melt mass-flow rate
MFR
rate of extrusion of a molten resin through a die of specified length and diameter under prescribed conditions
of temperature, load and piston position in the barrel of an extrusion plastometer, the rate being determined as
the mass extruded over a specified time
NOTE The correct SI units are decigrams per minute (dg/min). However, grams per 10 minutes (g/10 min) have
customarily been used in the past and are also acceptable.
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SIST EN ISO 1133:2005
ISO 1133:2005(E)
3.2
melt volume-flow rate
MVR
rate of extrusion of a molten resin through a die of specified length and diameter under prescribed conditions
of temperature, load and piston position in the barrel of an extrusion plastometer, the rate being determined as
the volume extruded over a specified time
3
NOTE The correct SI units are cubic decimetres per minute (dm /min). More commonly used units, which are also
3
acceptable, are cubic centimetres per 10 minutes (cm /10 min).
3.3
load
combined mass of piston and added weight, as specified by the conditions of the test
NOTE It is expressed in kilograms (kg).
4 Principle
The melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) are determined by extruding molten
material from the barrel of a plastometer under preset conditions of temperature and load. For melt mass-flow
rate, timed segments of the extrudate are weighed and the extrudate rate is calculated in g/10 min and
recorded. For melt volume-flow rate, the distance that the piston moves in a specified time or the time required
3
for the piston to move a specified distance is measured to generate data in cm /10 min. Melt volume-flow rate
may be converted to melt mass-flow rate, or vice-versa, if the density of the material is known under the
conditions of the test.
5 Apparatus
5.1 Extrusion plastometer
The basic apparatus comprises an extrusion plastometer operating at a fixed temperature. The general design
is as shown in Figure 1. The thermoplastic material, which is contained in a vertical cylinder, is extruded
through a die by a piston loaded with a known weight. The apparatus consists of the following essential parts.
5.1.1 Cylinder, fixed in a vertical position (see 5.1.5). The cylinder shall be manufactured from a material
resistant to wear and corrosion up to the maximum temperature of the heating system, and the finish,
properties and dimensions of its surface shall not be affected by the material being tested. For particular
materials, measurements may be required at temperatures up to 450 °C. The cylinder shall have a length
between 115 mm and 180 mm and an internal diameter of 9,550 mm ± 0,025 mm. The base of the cylinder
2
shall be thermally insulated in such a way that the area of exposed metal is less than 4 cm , and it is
recommended that an insulating material such as Al O , ceramic fibre or another suitable material be used in
2 3
order to avoid sticking of the extrudate.
The bore shall be hardened to a Vickers hardness of no less than 500 (HV 5 to HV 100) (see ISO 6507-1) and
shall be manufactured by a technique that produces a surface roughness of less than Ra (arithmetical mean
deviation) = 0,25 µm (see ISO 4287). If necessary, a piston guide shall be provided to keep friction caused by
misalignment of the piston down to a minimum.
NOTE Excessive wear of the cylinder, piston head, and piston is an indication of misalignment of the piston. Regular
checking for wear and change to the surface appearance of the cylinder, piston and piston head is required to ensure
these items are within specification.
5.1.2 Piston, having a working length at least as long as the cylinder. The piston shall be manufactured
from a material resistant to wear and corrosion up to the maximum temperature of the heating system and its
properties and dimensions shall not be affected by the material being tested. The piston shall have a head
6,35 mm ± 0,10 mm in length. The diameter of the head shall be less than the internal diameter of the cylinder
by 0,075 mm ± 0,010 mm. The upper edge shall have its sharp edge removed. Above the head, the piston
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SIST EN ISO 1133:2005
ISO 1133:2005(E)
shall be relieved to u 9 mm diameter. A stud may be added at the top of the piston to support a removable
weight, but the piston shall be thermally insulated from the weight. Along the piston stem, two thin annular
reference marks shall be scribed 30 mm apart and so positioned that the upper one is aligned with the top of
the cylinder when the distance between the lower edge of the piston head and the top of the die is 20 mm.
These annular marks on the piston are used as reference points during the measurements (see 8.4 and 9.5).
To ensure satisfactory operation of the apparatus, the cylinder and the piston head shall be made of materials
of different hardness. It is convenient for ease of maintenance and renewal to make the cylinder of the harder
material.
The piston may be either hollow or solid. In tests with very low loads, the piston may need to be hollow,
otherwise it may not be possible to obtain the lowest prescribed load. When the test is performed with the
higher loads, a solid piston or hollow piston with guides shall be used.
Key
1 insulation 7 piston head
2 removable weight 8 die
3 piston 9 die retaining plate
4 upper reference mark 10 insulating plate
5 lower reference mark 11 insulation
6 cylinder 12 temperature sensor
Figure 1 — Typical apparatus for determining melt flow rate, showing one possible configuration
5.1.3 Temperature-control system: For all cylinder temperatures that can be set, the temperature control
shall be such that, between 10 mm above the top of the die and 75 mm above the top of the die, the
temperature differences measured do not exceed those given in Table 1 throughout the duration of the test.
NOTE The temperature may be measured with thermocouples, platinum-resistance sensors, or mercury-in-glass
thermometers embedded in the wall. If the apparatus is equipped in this way, the temperature may not be exactly the
same as that in the melt, but the temperature-control system may be calibrated (see 7.1) to read in melt temperature.
The temperature-control system shall allow the test temperature to be set in steps of 0,2 °C or less.
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SIST EN ISO 1133:2005
ISO 1133:2005(E)
Table 1 — Maximum allowable variation in temperature with distance
and with time throughout the test
a
Maximum variation in test temperature
Test temperature, T
with distance at between with time at 10 mm above
b
10 mm and 75 mm above the die surface
°C
the die surface
°C °C
c
125 u T < 250
± 2,0
± 0,5
250 u T < 300
± 2,5 ± 0,5
300 u T
± 3,0 ± 1,0
a
Variation is over the normal time of a test, typically less than 25 min, and can be verified during
calibration of the equipment.
b
When using a 4 mm length die (see 5.1.4), the readings should be made 14 mm above the die
surface.
c
A value of 0,2 °C is preferred since it gives better reproducibility. It is intended that the value of
0,2 °C will become a requirement at the next revision of this International Standard.
5.1.4 Die, made of tungsten carbide or hardened steel, 8,000 mm ± 0,025 mm in length. The interior of the
bore shall be manufactured circular, straight and uniform in diameter such that in all positions it is within
± 0,005 mm of a true cylinder of nominal diameter 2,095 mm. The bore diameter shall be checked regularly
with a go/no-go gauge. If outside the tolerance limits, the die shall be discarded. The die shall have ends that
are flat, perpendicular to the axis of the bore and free from visible machining marks.
3
If testing materials with a melt mass-flow rate > 75 g/10 min or a melt volume-flow rate > 75 cm /10 min, a
half-height, half-diameter die 4,000 mm ± 0,025 mm in length and with a bore of nominal diameter
1,050 mm ± 0,005 mm should preferably be used. No spacer shall be used with this die to increase the
apparent length to 8,00 mm.
For testing potentially corrosive materials, dies made of cobalt-chromium-tungsten alloy, chromalloy, synthetic
sapphire or other suitable materials may be used.
The bore shall be hardened to a Vickers hardness of no less than 500 (HV 5 to HV 100) (see ISO 6507-1) and
shall be manufactured by a technique that produces a surface roughness of less than Ra (arithmetical mean
deviation) = 0,25 µm (see ISO 4287). The die shall not project beyond the base of the cylinder (see Figure 1)
and shall be mounted so that its bore is co-axial with the cylinder bore.
The flat surfaces of the die shall be checked to ensure that the area around the bore is not chipped. Any
chipping will cause errors and chipped dies shall be discarded.
5.1.5 Means of setting and maintaining the cylinder truly vertical: A two-directional bubble level, set
normal to the cylinder axis, and adjustable supports for the apparatus are suitable for the purpose.
NOTE This is to avoid excessive friction caused by the piston leaning to one side or bending under heavy loads. A
dummy piston with a spirit level on its upper end is also a suitable means of checking conformity with this requirement.
5.1.6 Load: A set of removable weights, which may be adjusted so that the combined mass of the weights
and the piston gives the selected nominal load to an accuracy of ± 0,5 %, are mounted on top of the piston.
Alternatively, a mechanical loading device combined with, for example, a load cell, providing the same level of
accuracy as the removable weights, may be used.
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SIST EN ISO 1133:2005
ISO 1133:2005(E)
5.2 Accessory equipment
5.2.1 General
5.2.1.1 Packing rod, made of non-abrasive material, for introducing test samples into the cylinder.
5.2.1.2 Cleaning equipment (see 7.2).
5.2.1.3 Go/no-go gauge, one end having a pin with a diameter equal to that of the die bore minus the
allowed tolerance (go gauge) and the opposite end having a pin with a diameter equal to that of the die bore
plus the allowed tolerance (no-go gauge). The pin gauge shall be sufficiently long to check the full length of
the die using the go gauge.
5.2.1.4 Temperature-calibration device (mercury-in-glass thermometer, thermocouple, platinum-resistance
sensor or other temperature-measuring device). The temperature sensor shall have a temperature readout
resolution of 0,1 °C or better. Calibrate the temperature-indicating device using for example a light-gauge
probe-type thermocouple or a platinum-resistance sensor having a short sensing length. The thermocouple
should be encased in a metallic sheath having a diameter of approximately 1,6 mm with its hot junction
grounded to the end of the sheath.
5.2.1.5 Die plug: A device shaped at one end so that it effectively blocks the die exit and prevents drool of
molten material while allowing rapid removal prior to initiation of the test, e.g. a plug attached to a compressed
spring.
5.2.1.6 Piston/weight support, of sufficient length to hold the piston so that the lower reference mark is
25 mm above the top of the cylinder.
5.2.2 Equipment for procedure A (see Clause 8)
5.2.2.1 Cutting tool, for cutting off extruded sample. A sharp-edged spatula has been found suitable.
5.2.2.2 Timer, accurate to ± 0,1 s for melt mass-flow rates u 100 g/10 min and to ± 0,01 s for melt mass-flow
rates > 100 g/10 min. Compare with a ca
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Questions, Comments and Discussion
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