EN ISO 12086-1:2006

SLOVENSKI STANDARD
01-april-2006
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Plastics - Fluoropolymer dispersions and moulding and extrusion materials - Part 1:
Designation system and basis for specifications (ISO 12086-1:2006)
Kunststoffe - Fluorpolymerdispersionen, Formmassen und Extrusionsmaterialien - Teil 1:
Bezeichnungssystem und Basis für Spezifikationen (ISO 12086-1:2006)
Plastiques - Polymeres fluorés: dispersions et matériaux pour moulage et extrusion -
Partie 1: Systeme de désignation et base de spécification (ISO 12086-1:2006)
Ta slovenski standard je istoveten z: EN ISO 12086-1:2006
ICS:
83.080.20 Plastomeri Thermoplastic materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 12086-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2006
ICS 83.080.20 Supersedes EN ISO 12086-1:1999
English Version
Plastics - Fluoropolymer dispersions and moulding and extrusion
materials - Part 1: Designation system and basis for
specifications (ISO 12086-1:2006)
Plastiques - Polymères fluorés: dispersions et matériaux Kunststoffe - Fluorpolymerdispersionen, Formmassen und
pour moulage et extrusion - Partie 1: Système de Extrusions-materialien - Teil 1: Bezeichnungssystem und
désignation et base de spécification (ISO 12086-1:2006) Basis für Spezifikationen (ISO 12086-1:2006)
This European Standard was approved by CEN on 13 February 2006.
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, Romania,
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
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 12086-1:2006: E
worldwide for CEN national Members.

Foreword
This document (EN ISO 12086-1:2006) 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 August 2006, and conflicting national
standards shall be withdrawn at the latest by August 2006.

This document supersedes EN ISO 12086-1:1999.

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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

Endorsement notice
The text of ISO 12086-1:2006 has been approved by CEN as EN ISO 12086-1:2006 without any
modifications.
INTERNATIONAL ISO
STANDARD 12086-1
Second edition
2006-02-15
Plastics — Fluoropolymer dispersions
and moulding and extrusion materials —
Part 1:
Designation system and basis
for specifications
Plastiques — Polymères fluorés: dispersions et matériaux pour
moulage et extrusion —
Partie 1: Système de désignation et base de spécification

Reference number
ISO 12086-1:2006(E)
©
ISO 2006
ISO 12086-1:2006(E)
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ii © ISO 2006 – All rights reserved

ISO 12086-1:2006(E)
Contents Page
Foreword. iv
1 Scope . 1
2 Normative references . 2
3 Terms and definitions. 3
4 Abbreviated terms and symbols . 5
5 Designation system. 6
5.1 General. 6
5.2 Data block 1. 6
5.3 Data block 2. 7
5.4 Data block 3. 9
5.4.1 General. 9
5.4.2 Transition temperatures. 9
5.4.3 Relative molecular mass. 11
5.4.4 Mechanical properties. 12
5.4.5 Density . 14
5.4.6 Percentage fluoropolymer and surfactant . 14
5.4.7 Particle size . 15
5.4.8 Bulk density. 15
5.4.9 Powder-flow time . 16
5.4.10 Extrusion pressure . 16
5.4.11 Contamination. 16
5.5 Data block 4. 16
5.6 Data block 5. 17
5.7 Designatory properties for fluoropolymers . 17
5.7.1 Designatory properties applicable to all fluoropolymers. 17
5.7.2 Designatory properties specific to particular classes of fluoropolymer . 18
6 Example of a designation . 19
7 Specifications for fluoropolymers . 19
8 Packaging and marking . 21
8.1 Packaging . 21
8.2 Marking . 21
9 Sampling. 21
Annex A (normative) Designatory properties for common fluoropolymer types. 22
Annex B (normative) Designatory properties for common fluoropolymer types with
cross-reference listing to the tables for codes in ISO 12086-1 and the test methods in
ISO 12086-2. 24
Annex C (informative) The fluoropolymer family . 26
Annex D (informative) Standard specifications for fluoropolymers . 28
Annex E (informative) Listing of test methods included in ISO 12086-2 (in alphabetical order) . 29
Annex F (informative) Brief instructions for use of this part of ISO 12086 . 30

ISO 12086-1:2006(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 12086-1 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 9, Thermoplastic
materials.
This second edition cancels and replaces the first edition (ISO 12086-1:1995), which has been technically
revised.
ISO 12086 consists of the following parts, under the general title Plastics — Fluoropolymer dispersions and
moulding and extrusion materials:
⎯ Part 1: Designation system and basis for specifications
⎯ Part 2: Preparation of test specimens and determination of properties

iv © ISO 2006 – All rights reserved

INTERNATIONAL STANDARD ISO 12086-1:2006(E)

Plastics — Fluoropolymer dispersions and moulding and
extrusion materials —
Part 1:
Designation system and basis for specifications
1 Scope
1.1 This part of ISO 12086 establishes a system of designation for fluoropolymer materials that may be
used as the basis for specifications. It covers the homopolymers and various copolymers of fluoromonomers
used as dispersions and for moulding, extrusion and other specialized applications. This part of ISO 12086
describes the designation system and provides codes and tables of values for the designatory properties. The
designation system is applicable both to conventional thermoplastic fluoropolymers, processed by various
techniques, and those materials that are processed by the unique operations required for the
non-conventional thermoplastic polytetrafluoroethylene. The materials include both the fluorocarbon polymers
and the various other fluoropolymers as virgin polymers or processed for reuse or recycling. This part of
ISO 12086 also includes an extension of the designation system that provides a basis for specification of the
materials. This basis for specification may be used to prepare specifications related to well-defined
applications. As explained in Clause 5, these specifications will use data blocks 1 to 4 and, if necessary, data
block 5 as a complement, the last-mentioned data block containing the specific requirements in relation to the
application. Fluoroelastomers are specifically excluded.
1.2 Fluoropolymers are long-chain homopolymers and copolymers of fluoromonomers. Fluoropolymers can
be modified with small amounts of different fluoromonomers. In general, provided the polymer is not modified
with more than five percent by mass of modifying fluoromonomer(s), it can be classed as the base polymer.
PVDF is classed as the base polymer when it is modified during polymerization with up to two percent by
mass of additional fluoromonomers in the polymer structure. For PTFE, up to one percent by mass of a
modifying comonomer is the limit for the material to be classed as polytetrafluoroethylene. A general
discussion of members of the fluoropolymer family is included in Annex C. This part of ISO 12086 is
particularly concerned with, but is not limited to, the materials listed in 4.2. The accepted abbreviated term for
each material is included in 4.2.
1.3 The various types of fluoropolymer are differentiated from each other by a classification system based
on the fluoropolymer genus and appropriate levels of the designatory properties, along with information about
basic polymer parameters, intended application or method of processing, important properties, additives,
colorants, fillers and reinforcing materials. Designatory properties for each fluoropolymer are selected from the
general list in 5.4, and those properties to be designated for each fluoropolymer are listed in 5.7 and in
Annexes A and B.
1.4 Provision is made for designation of materials involved in reuse and recycling of the fluoropolymers
covered by this part of ISO 12086. A set of designatory properties is provided for reprocessed PTFE because
of its special requirements. For non-virgin conventional thermoplastic fluoropolymers, the same designatory
properties as used for virgin materials are used with inclusion of the code Z1, Z2 or Z3 in data block 1 as
specified in Table 1.
1.5 It is not intended to imply that materials having the same designation necessarily give the same
performance. The converse should also be emphasized, i.e. materials with different designations may be
suitable for use in the same application. This part of ISO 12086 does not provide engineering data,
performance data or processing conditions which may be required to specify materials for particular end-use
applications (see the discussion on use of data block 5 in Clauses 5 and 7). If such additional properties are
required, they can be determined in accordance with the test methods specified in ISO 12086-2, if suitable.
ISO 12086-1:2006(E)
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 472, Plastics — Vocabulary
ISO 527-2, Plastics — Determination of tensile properties — Part 2: Test conditions for moulding and
extrusion plastics
ISO 1043-1, Plastics — Symbols and abbreviated terms — Part 1: Basic polymers and their special
characteristics
ISO 1043-2, Plastics — Symbols and abbreviated terms — Part 2: Fillers and reinforcing materials
ISO 1133, Plastics — Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of
thermoplastics
ISO 1183-1, Plastics — Methods for determining the density of non-cellular plastics — Part 1: Immersion
method, liquid pyknometer method and titration method
ISO 1183-2, Plastics — Methods for determining the density of non-cellular plastics — Part 2: Density gradient
column method
ISO 12000, Plastics/rubber — Polymer dispersions and rubber latices (natural and synthetic) — Definitions
and review of test methods
ISO 12086-2, Plastics — Fluoropolymer dispersions and moulding and extrusion materials — Part 2:
Preparation of test specimens and determination of properties
ASTM D 1430, Standard Classification System for Polychlorotrifluoroethylene (PCTFE) Plastics
ASTM D 1600, Standard Terminology for Abbreviated Terms Relating to Plastics
ASTM D 3222, Standard Specification for Unmodified Poly(Vinylidene Fluoride) (PVDF) Molding, Extrusion
and Coating Materials
ASTM D 3418, Standard Test Method for Transition Temperatures of Polymers by Differential Scanning
Calorimetry
ASTM D 3892, Standard Practice for Packaging/Packing of Plastics
ASTM D 4591, Standard Test Method for Determining Temperatures and Heats of Transitions of
Fluoropolymers by Differential Scanning Calorimetry
ASTM D 4895, Standard Specification for Polytetrafluoroethylene (PTFE) Resin Produced from Dispersion
ASTM D 5033, Standard Guide for Development of ASTM Standards Relating to Recycling and Use of
Recycled Plastics
2 © ISO 2006 – All rights reserved

ISO 12086-1:2006(E)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 472 and the following terms and
definitions apply. The terms listed in 3.1 to 3.3 are repeated from ISO 472 to be sure there is no
misunderstanding.
3.1
dispersion
heterogeneous system in which a finely divided material is distributed in another material
3.2
fluoroplastic
plastic based on polymers made with monomers containing one or more atoms of fluorine, or copolymers of
such monomers with other monomers, the fluoromonomer being in the greatest amount by mass
3.3
latex
colloidal aqueous dispersion of a polymeric material
3.4
amorphous
noncrystalline, or devoid of regular structure
3.5
bulk density
mass (in grams) per litre of material, measured under the conditions of the test
3.6
copolymer
polymer formed from two or more types of monomer
3.7
emulsion polymer
〈fluoropolymer materials〉 material isolated from its polymerization medium as a colloidal aqueous dispersion
of the polymer solids
NOTE This definition, used in the fluoropolymer industry, is similar to that for “latex” in ISO 472 and is quite different
from the definition for “emulsion” in ISO 472.
3.8
fluorocarbon plastic
plastic based on polymers made from perfluoromonomers only
3.9
fluoroelastomer
elastomer based on polymers made from monomers containing one or more atoms of fluorine, or copolymers
of such monomers with other monomers, the fluoromonomer(s) being in the greatest amount by mass
3.10
fluoropolymer
synonymous with fluoroplastic (see 3.2)
3.11
melt-processible
capable of being processed by, for example, injection moulding, screw extrusion and other operations typically
used with thermoplastics
ISO 12086-1:2006(E)
3.12
preforming
compacting powdered PTFE material under pressure in a mould to produce a solid object, called a preform,
that is capable of being handled
NOTE With PTFE, “moulding” and “compaction” are terms used interchangeably with “preforming”.
3.13
presintered resin
resin that has been treated thermally at or above the melting point of the resin at atmospheric pressure
without having been previously preformed
3.14
reprocessed plastic
material from the manufacture of semifinished forms of fluoropolymers that has been converted to a form
suitable for further use
NOTE 1 This material is often referred to as a byproduct from processing.
NOTE 2 Related definitions are presented in ASTM D 5033.
3.15
sintering
〈PTFE〉 thermal treatment during which the material is melted and recrystallized by cooling, with coalescence
occurring during the treatment
3.16
standard specific gravity
SSG
specific gravity of a specimen of PTFE material preformed, sintered and cooled through the crystallization
point at a rate of 1 °C per minute in accordance with the appropriate sintering schedule as described in
ISO 12086-2
NOTE The SSG of unmodified PTFE is inversely related to its molecular mass.
3.17
suspension polymer
polymer isolated from its liquid polymerization medium as a solid having a particle size well above colloidal
dimensions
3.18
zero-strength time
ZST
measure of the relative molecular mass of PCTFE
4 © ISO 2006 – All rights reserved

ISO 12086-1:2006(E)
4 Abbreviated terms and symbols
4.1 The abbreviated terms given in ISO 1043-1 and ISO 1043-2 are applicable to this part of ISO 12086.
4.2 This part of ISO 12086 is particularly concerned with, but is not limited to, the materials listed below
(there are minor differences from ISO 1043-1 and ISO 1043-2 that reflect current usage of the terms and
abbreviated terms):
ECTFE ethylene-chlorotrifluoroethylene copolymer
EFEP ethylene-tetrafluoroethylene-hexafluoropropene copolymer
ETFE ethylene-tetrafluoroethylene copolymer
FEP perfluoro(ethylene-propene) copolymer
PCTFE polychlorotrifluoroethylene
PFA perfluoro(alkoxy alkane)
PTFE polytetrafluoroethylene
PVDF poly(vinylidene fluoride)
PVF poly(vinyl fluoride)
TFE/PDD tetrafluoroethylene-perfluorodioxole copolymer
VDF/CTFE vinylidene fluoride-chlorotrifluoroethylene copolymer
VDF/HFP vinylidene fluoride-hexafluoropropene copolymer
VDF/TFE vinylidene fluoride-tetrafluoroethylene copolymer
VDF/TFE/HFP vinylidene fluoride-tetrafluoroethylene-hexafluoropropene copolymer
4.3 For the purposes of this part of ISO 12086, the following additional abbreviated terms apply.
AF amorphous fluoropolymer
ESG extended specific gravity
MFR melt mass-flow rate
MVR melt volume-flow rate
SSG standard specific gravity
SVI stretching-void index
TII thermal-instability index
ZST zero-strength time
ISO 12086-1:2006(E)
5 Designation system
5.1 General
The designation system for thermoplastics is based on the following standard pattern:
Designation
Identity block
Individual-item block
International
Description block
Standard
(optional)
Data Data Data Data Data
number
block block block block block
block
1 2 3 4 5
The designation consists of an optional description block, reading “Thermoplastics”, and an identity block
comprising the International Standard number and an individual-item block. For unambiguous designation, the
individual-item block is subdivided into five data blocks comprising the following information:
⎯ Data block 1: Identification of the plastic by its abbreviated term in accordance with ISO 1043-1
(supplemented, if necessary, by the abbreviated term for the fluoropolymer as listed in 4.2
or ASTM D 1600) and information about the composition of the polymer (see 5.2).
⎯ Data block 2: Position 1: Intended application and/or method of processing (see 5.3).
Positions 2 to 8: Important properties, additives and supplementary information (see 5.3).
⎯ Data block 3: Designatory properties (see 5.4 and 5.7).
⎯ Data block 4: Fillers or reinforcing materials designated by letters as given in ISO 1043-2 (supplemented
by the codes listed in Table 20), along with arabic numerals representing the nominal
percentage content by mass (see 5.5).
⎯ Data block 5: Additional details included in this data block will transform the general designation of a
material into a material specification. This may be done by reference to particular
requirements for properties, by reference to a suitable national standard, or both. See
Clause 7 for further discussion and examples.
The first character of the individual-item block shall be a hyphen. The data blocks shall be separated from
each other by a comma.
If a data block is not used, this shall be indicated by doubling the separation sign, i.e. by two commas (,,).
5.2 Data block 1
In this data block, fluoropolymers are identified by the abbreviated term given in ISO 1043-1, followed by a
hyphen and one letter that codes additional information about the polymer as specified in Table 1. See 4.2 for
a list of commonly used fluoropolymers with the abbreviated term for each.
6 © ISO 2006 – All rights reserved

ISO 12086-1:2006(E)
Table 1 — Code-letters used for additional information in data block 1
Code-letter Meaning of code-letter
A
Modified
B
Block copolymer
C Controlled rheology, narrow molecular-mass distribution
D Dispersion
E Emulsion polymer
F
Filler resin (additive resin)
G Casting polymer
H Homopolymer
K Copolymer
L
Graft polymer
M Bulk polymer
R Random copolymer
S Suspension polymer
SS
Presintered suspension polymer
Z1 In-house-recovered material; out of specification/waste
Z2 Reprocessed; byproduct from processing
Z3 Postconsumer material
5.3 Data block 2
This block can indicate up to eight items of information coded by letters as specified in Table 2. Information
about intended application or method of processing is given in position 1. Information about important
properties, additives and supplementary information (up to seven items) is given, if requested, in positions 2
to 8. The code-letters are specified in Table 2.
If only one letter is given (e.g. E), its meaning must come from position 1. If information is presented in
positions 2 to 8 and no specific information is given in position 1, a code-letter in position 1 is required. If no
code-letter is appropriate, the letter X shall be inserted in position 1. An alphabetical order is recommended if
more than one code-letter is used in any of positions 2 to 8.
Any indication of an intended application in data block 2 shall be selected carefully. Many materials are
capable of more than one application or method of processing, e.g., extrusion (E) and moulding (M). Such
materials are not special modifications and shall be coded “general use” (G). Coding for special methods of
processing shall be reserved for materials designed for the application.
ISO 12086-1:2006(E)
Table 2 — Code-letters used in data block 2
Intended application or method of processing Essential properties, additives or other information
Code-letter Position 1 Code-letter Positions 2 to 8
A C
Adhesives Coloured
B Blow moulding D Powder
B1 Extrusion blow moulding D1 Dry blend
B2 Injection blow moulding D2 Free-flowing
C D3
Calendering Not free-flowing
E Extrusion E Expandable
F Filled compounds F Special burning characteristics
General use
G F1 Oxygen index > 95 %
H Coating F2 Flame retarded
H1 Powder coating F4 Reduced smoke emission
H2 G
Dip coating Granules
H3 Wet coating G1 Pellets
H4 Impregnation G2 Lentils
H5 Spray coating G3 Beads
K H1
Cable and wire coating Stabilized against radiation
L Monofilament extrusion L Light and weather stabilized
M Moulding M Nucleated
M1 Injection moulding M1 Modified by comonomer
M2 N
Transfer moulding Natural (no colour added)
P Paste extrusion N1 Suitable for food contact
Q Compression moulding N2 High purity
Q1 Automatic moulding P Impact modifiied
Q2 R
Isostatic moulding Mould release agent
R Rotational moulding S Lubricated
S Sintering S1 External lubrication
T Tape manufacture T Transparent
T1 T1
Skived tape or film Translucent
T2 Unsintered tape or film T2 Opaque
T3 Expanded tape or film T3 Improved transmission in UV
V Thermoforming T4 Reduced transmission in UV
X V
No indication Heat shrinkable
Y Textile yarns, spinning W1 Improved chemical resistance
X Crosslinkable
Y Increased electrical conductivity
Z
Antistatic
8 © ISO 2006 – All rights reserved

ISO 12086-1:2006(E)
5.4 Data block 3
5.4.1 General
Each member of the fluoropolymer family has its own set of designatory properties selected from the
properties listed below and discussed further in 5.7. Annex A provides the information in tabular form.
Annex B provides a summary that lists each of the fluoropolymers specifically included in this part of
ISO 12086 and its designatory properties. Table number and page references are provided for each
designatory property along with the subclause and page reference to the test method provided in ISO 12086-2.
The designatory properties shall be determined in accordance with the test methods and conditions indicated
for each item. There is one position in data block 3 for each of the designatory properties for a particular
fluoropolymer. Therefore, data block 3 may have more positions for one fluoropolymer than for another. As an
example, from Annex A or B one finds seven designatory properties for PTFE-S, so there will be seven
positions in data block 3 for this polymer. PTFE-Z, on the other hand, has only two designatory properties, and
there will therefore be only two positions in data block 3. The codes for some properties such as melt flow rate
may require more than one letter or number. The results shall be classified and coded in data block 3 as
indicated in the tables and presented in the order that the designatory properties are presented in 5.7 and
listed in Annex A. A full stop shall be used to separate the code or codes in one position from those in the next.
When codes for a property are not included, this shall be indicated by the full stop that normally would be
included at the end of the codes for that position. The result is that two full stops in sequence, “.”, show that
codes for a property have not been included in the designation.
A full stop is not used at the end of the last position in the data block unless the last position is vacant.
If a property value falls on or near a range limit, the manufacturer shall state which range will designate the
material. If subsequent individual test values lie on, or on either side of, the range limit because of
manufacturing tolerances, the designation is not affected. The resin manufacturer shall set the codes in data
block 3.
NOTE Not all the combinations of the values of the designatory properties have to be provided for currently available
polymers. Not all combinations of designatory properties are possible for a polymer.
5.4.2 Transition temperatures
5.4.2.1 Melting-peak temperature
The melting-peak temperature shall be determined in accordance with the principles of ASTM D 3418 and
ASTM D 4591, modified by details given in ISO 12086-2. Melting-peak temperature shall be used as a
designatory property for crystalline and semicrystalline polymers. Codes and ranges are given in Table 3.
5.4.2.2 Glass-transition temperature
The glass-transition temperature shall be determined in accordance with the principles of ASTM D 3418,
modified by details given in ISO 12086-2. The glass-transition temperature shall be used as a designatory
property for amorphous fluoropolymers. Codes and ranges are listed in Table 3.

ISO 12086-1:2006(E)
Table 3 — Codes and ranges for thermal transition temperatures in data block 3
Code Range of temperature (°C)
A
< 20
B
20 to < 30
C 30 to < 40
D 40 to < 50
E
50 to < 60
F
60 to < 70
G 70 to < 80
H 80 to < 90
I
90 to < 100
J
100 to < 110
K 110 to < 120
L 120 to < 130
M 130 to < 140
N
140 to < 150
O
150 to < 160
P 160 to < 170
Q 170 to < 180
R
180 to < 190
S
190 to < 200
T
200 to < 210
U 210 to < 220
V 220 to < 230
W
230 to < 240
X
240 to < 250
Y 250 to < 260
Z 260 to < 270
270 to < 280
280 to < 290
290 to < 300
4 300 to < 310
5 310 to < 320
320 to < 330
330 to < 340
8 340 to < 350
9 350 to < 360
0 W 360
10 © ISO 2006 – All rights reserved

ISO 12086-1:2006(E)
5.4.3 Relative molecular mass
5.4.3.1 General
Standard specific gravity (SSG) is the property usually used to measure the relative molecular mass of the
polymers used in the PTFE industry. The melt mass-flow rate (MFR) is usually used for conventional
thermoplastic fluoropolymers. For PCTFE, the zero-strength time (ZST) is used. With MFR, the codes have
three digits: a number to indicate the value of the flow rate and two letters to indicate the test load and test
temperature, respectively.
5.4.3.2 Standard specific gravity (SSG)
SSG shall be determined in accordance with the procedure described in ISO 12086-2. Codes and ranges are
listed in Table 4.
Table 4 — Codes for standard specific gravity (SSG) in data block 3
Code SSG
< 2,140
1 2,140 to < 2,160
2 2,160 to < 2,180
2,180 to < 2,200
4 2,200 to < 2,220
2,220 to < 2,240
6 W 2,240
5.4.3.3 Melt mass-flow rate and melt volume-flow rate
Melt mass-flow rate or melt volume-flow rate shall be determined in accordance with ISO 1133, modified by
details provided in ISO 12086-2 and using test conditions selected from Tables 6 and 7 of this part of
ISO 12086. The melt mass-flow rate is indicated in data block 3 by the codes and ranges given in Table 5
followed by the codes for temperature and load given in Tables 6 and 7. If melt volume-flow rate is determined,
the melt mass-flow rate may be calculated from the volume-flow rate and the melt density of the polymer.
Table 5 — Codes for melt mass-flow rate (MFR) in data block 3
Code MFR (g/10 min)
< 0,1
0,1 to < 0,2
2 0,2 to < 0,5
3 0,5 to < 1,0
4 1,0 to < 2,1
2,0 to < 5,0
5,0 to < 10,0
10,0 to < 20,0
20,0 to < 50,0
W 50,0
ISO 12086-1:2006(E)
Table 6 — Codes for MFR test temperature in data block 3
Code Test temperature (°C)
A 372 ± 1
B 297 ± 1
C 271,5 ± 1
D 265 ± 1
E 230 ± 1
Table 7 — Codes for MFR test load in data block 3
Code Test load (kg)
1 0,325
2 1,20
3 2,16
4 3,8
5 5,0
6 10,0
7 12,5
8 21,6
9 31,6
5.4.3.4 Zero-strength time (ZST)
Zero-strength time shall be determined as described in ASTM D 1430 and the results coded as indicated in
Table 8.
Table 8 — Codes for zero-strength time (ZST) in data block 3
Code ZST (s)
0 < 115
1 115 to < 175
2 175 to < 300
3 300 to < 750
4 750 to < 2 500
5 W 2 500
5.4.4 Mechanical properties
Tensile strength, tensile yield stress, percentage elongation at break and modulus properties shall be
determined in accordance with the principles of ISO 527-2, modified by details given in ISO 12086-2. Tables 9
to 12 provide the codes to use for each range of tensile strength (including specimen thickness for PTFE-S),
tensile yield stress, percentage elongation at break and tensile modulus.
12 © ISO 2006 – All rights reserved

ISO 12086-1:2006(E)
Table 9 — Codes for tensile strength and tensile yield stress in data block 3
Code Tensile strength and tensile yield stress (MPa)
A < 15
B 15 to < 20
C 20 to < 25
D 25 to < 30
E 30 to < 35
F 35 to < 40
G 40 to < 45
H 45 to < 50
I 50 to < 55
J W 55
Table 10 — Codes for percentage elongation at break in data block 3
Code Percentage elongation at break
A < 50
B 50 to < 100
C 100 to < 150
D 150 to < 200
E 200 to < 250
F 250 to < 300
G 300 to < 350
H 350 to < 400
I 400 to < 500
J 500 to < 600
K 600 to < 800
L W 800
Table 11 — Codes for tensile modulus in data block 3
Code Tensile modulus (MPa)
A < 500
B 500 to < 800
C 800 to < 1 200
D 1 200 to < 1 600
E 1 600 to < 2 000
F 2 000 to < 3 000
G 3 000 to < 4 000
H 4 000 to < 6 000
I W 6 000
ISO 12086-1:2006(E)
Table 12 — Codes for specimen thickness for PTFE-S in data block 3
Code Specimen thickness (mm)
1 < 0,125
2 0,125 to < 0,500
3 0,500 to < 1,00
4 W 1,00
5.4.5 Density
Density shall be determined in accordance with the principles of ISO 1183-1 and ISO 1183-2 as specified in
ISO 12086-2. The codes are listed in Table 13.
Table 13 — Codes for density in data block 3
Code Density (g/cm at 23 °C)
A < 1,6
B 1,6 to < 1,7
C 1,7 to < 1,8
D 1,8 to < 1,9
E 1,9 to < 2,0
F 2,0 to < 2,1
G 2,1 to < 2,2
H 2,2 to < 2,3
I 2,3 to < 2,4
J 2,4 to < 2,5
K 2,5 to < 3,0
L 3,0 to < 3,5
M 3,5 to < 4,0
N 4,0 to < 4,5
O 4,5 to < 5,0
P 5,0 to < 5,5
Q 5,5 to < 6,0
R 6,0 to < 6,5
S 6,5 to < 7,0
T W 7,0
5.4.6 Percentage fluoropolymer and surfactant
Percentage fluoropolymer and surfactant shall be determined in accordance with the procedures provided in
ISO 12086-2. The surfactant content shall be reported as the percentage by mass based on the content of dry
fluoropolymer. The percentage shall be coded in position 6 of data block 3 by combining the code-number for
the percentage fluoropolymer from Table 14 with the code-letter for percentage of added surfactant from
Table 15.
14 © ISO 2006 – All rights reserved

ISO 12086-1:2006(E)
Table 14 — Codes and ranges for percentage fluoropolymer in dispersions in data block 3
Code Percentage fluoropolymer
2 u 40
4 > 40
Table 15 — Codes and ranges for added-surfactant content in data block 3
(calculated as a percentage of the mass of the polymer)
Code Percentage surfactant, minimum
A < 0,5
B 0,5 to < 2,5
C 2,5 to < 3,5
D W 3,5
5.4.7 Particle size
Particle size shall be determined by the method described in ISO 12086-2. An appropriate method for particle
size depends upon the particular fluoropolymer. The methods include wet- or dry-sieve analysis, electric
sensing-zone testing and light scattering. Automated or other instruments that have been shown to provide
equivalent results shall be acceptable alternatives to the detailed procedures given in ISO 12086-2. Codes
and ranges are given in Table 16.
Table 16 — Codes and ranges for particle size (50 % retention) in data block 3
Code Particle size (µm)
0 < 10
1 10 to < 125
2 125 to < 250
3 250 to < 355
4 355 to < 500
5 500 to < 710
6 710 to < 1 000
7 W 1 000
5.4.8 Bulk density
Bulk density shall be determined as described in ISO 12086-2. Codes and ranges are listed in Table 17.
Table 17 — Codes and ranges for bulk density in data block 3
Code Bulk density (g/l)
1 < 500
2 500 to 800
3 > 800
ISO 12086-1:2006(E)
5.4.9 Powder-flow time
Powder-flow time shall be determined as described in ISO 12086-2. Codes and ranges are listed in Table 18.
Table 18 — Codes and ranges for powder-flow time in data block 3
Code Powder-flow time (s)
0 Test inappropriate
1 < 10
2 10 to 20
3 > 20
5.4.10 Extrusion pressure
Extrusion pressure shall be determined by the procedure described in ISO 12086-2. Codes and ranges are
listed in Table 19.
Table 19 — Codes and ranges for extrusion pressure in data block 3
(determined using a reduction ratio of 400:1)
Code Extrusion pressure (MPa)
< 15
2 15 to 35
> 35
5.4.11 Contamination
Specification for freedom from contamination may be established by agreement between the seller and the
purchaser.
5.5 Data block 4
Data block 4 is used to indicate:
⎯ the type of filler or reinforcing material used as an additive;
⎯ the physical form of the additive.
These items can be coded as specified in ISO 1043-2. Table 20 lists codes for types and forms of typical
additive material. The additive content may be coded by figures representative of the nominal percentage
mass content of the material, separated from the code for the material itself by a hyphen “-” if required for
clarity. Mixtures of materials, forms of materials (powder, fibre, etc.), or both, are designated by combining the
codes using a “+” sign.
16 © ISO 2006 – All rights reserved

ISO 12086-1:2006(E)
Table 20 — Codes for fillers and reinforcing materials in data block 4
Code Material Code Form/structure
B Boron B Bead, spheres, balls
C C
Carbon Chips, cuttings
C1 D
Coke Powder
C2 Partially graphitized carbon F Fibre
C-G Graphite G Ground
E Clay H Whiskers
G K
Glass Knitted fabric
K Calcium carbonate L Layer
M Mineral, metal M Mat (thick)
M1 Aluminium oxide N Non-woven and thin
M2 P
Bronze Paper
M3 Calcium fluoride S Rovings
M4 Molybdenum disulfide T Scales, flakes
M5 V
Stainless steel Cord
P W
Mica Veneer
Q Silica X Not specified
R Aramid Y Yarn
S Synthetic, organic Z Others
S-X
X is the abbreviated ter
...