ISO 8143:2010

INTERNATIONAL ISO
STANDARD 8143
First edition
2010-03-01


Thermal insulation products for building
equipment and industrial installations —
Calcium silicate products
Produits isolants thermiques pour l'équipement du bâtiment et les
installations industrielles — Produits en silicate de calcium




Reference number
ISO 8143:2010(E)
©
ISO 2010

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ISO 8143:2010(E)
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ISO 8143:2010(E)
Contents Page
Foreword .iv
1 Scope.1
2 Normative references.1
3 Terms, definitions, symbols, units and abbreviated terms.3
3.1 Terms and definitions .3
3.2 Symbols, units and abbreviated terms .3
4 Requirements.4
4.1 General .4
4.2 For all applications.5
4.3 For specific applications .6
5 Test methods .8
5.1 Sampling.8
5.2 Conditioning .8
5.3 Testing.8
6 Designation code.11
7 Evaluation of conformity .11
8 Marking and labelling.12
Annex A (normative) Factory production control.13
Annex B (informative) Additional properties.14
Annex C (informative) Preparation of the test specimens to measure thermal conductivity .16
Annex D (informative) Determination of the minimum service temperature .17
Bibliography.21

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ISO 8143:2010(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 8143 was prepared by Technical Committee ISO/TC 163, Thermal performance and energy use in the
built environment, Subcommittee SC 3, Thermal insulation products.


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INTERNATIONAL STANDARD ISO 8143:2010(E)

Thermal insulation products for building equipment and
industrial installations — Calcium silicate products
1 Scope
This International Standard specifies the requirements for factory-made calcium silicate products which are
used for thermal insulation of industrial installations and building equipment with an operating temperature of
up to approximately +1 100 °C.
NOTE Calcium silicate products can be used at temperatures lower than 0 °C. For operating temperatures below
0 °C, special tests, regarding the suitability of the product in the intended application, are advised (e.g. liquefaction of
oxygen). It is advisable to seek the advice of the manufacturer(s) in all cases.
The products are manufactured in the form of boards, pipe sections, segments and prefabricated ware.
This International Standard describes product characteristics and includes procedures for testing, evaluation
of conformity, marking and labelling.
Products covered by this International Standard are also used in prefabricated thermal insulation systems and
composite panels; the structural performance of systems incorporating these products is not covered.
This International Standard does not specify the required level or class of a given property required to be
achieved by a product in order to demonstrate fitness for purpose in a particular application. The levels
required for a given application can be found in regulations and invitations to tender.
This International Standard is not applicable to
a) products with a declared thermal conductivity greater than 0,6 W/(m⋅K) at 23 °C;
b) products intended to be used for the insulation of the building structure;
c) the acoustical aspects
1) direct airborne sound insulation, and
2) impact noise transmission index.
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.
1)
ISO 1182 , Reaction to fire tests for products — Non-combustibility test

1) To be published. (Revision of ISO 1182:2002)
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ISO 8143:2010(E)
2)
ISO 1716 , Reaction to fire tests for products — Determination of the heat of combustion (calorific value)
ISO 2477, Shaped insulating refractory products — Determination of permanent change in dimensions on
heating
ISO 8894-1, Refractory materials — Determination of thermal conductivity — Part 1: Hot-wire method
(cross-array)
ISO 8302, Thermal insulation — Determination of steady-state thermal resistance and related properties —
Guarded hot plate apparatus
ISO 8497, Thermal insulation — Determination of steady-state thermal transmission properties of thermal
insulation for circular pipes
ISO 9229, Thermal insulation — Vocabulary
ISO 12576-1, Thermal insulation — Insulating materials and products for buildings — Conformity control
systems — Part 1: Factory-made products
ISO 13787, Thermal insulation products for building equipment and industrial installations — Determination of
declared thermal conductivity
ISO 21129, Hygrothermal performance of building materials and products — Determination of water-vapour
transmission properties — Box method
ISO 29465, Thermal insulating products for building applications — Determination of length and width
ISO 29466, Thermal insulating products for building applications — Determination of thickness
ISO 29467, Thermal insulating products for building applications — Determination of squareness
ISO 29468, Thermal insulating products for building applications — Determination of flatness
ISO 29469:2008, Thermal insulating products for building applications — Determination of compression
behaviour
ISO 29472, Thermal insulating products for building applications — Determination of dimensional stability
under specified temperature and humidity conditions
ISO 29767, Thermal insulating products for building applications — Determination of short-term water
absorption by partial immersion
EN 13467, Thermal insulating products for building equipment and industrial installations — Determination of
dimensions, squareness and linearity of preformed pipe insulation
EN 13468, Thermal insulating products for building equipment and industrial installations — Determination of
trace quantities of water soluble chloride, fluoride, silicate, sodium ions and pH
EN 13469:2002, Thermal insulating products for building equipment and industrial installations —
Determination of water vapour transmission properties of preformed pipe insulation
EN 13472, Thermal insulating products for building equipment and industrial installations — Determination of
short term water absorption by partial immersion of preformed pipe insulation

2) To be published. (Revision of ISO 1716:2002)
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ISO 8143:2010(E)
3 Terms, definitions, symbols, units and abbreviated terms
3.1 Terms and definitions
For the purposes of this document the terms and definitions given in ISO 9229 and the following apply.
3.1.1
production line
equipment that produces products in a continuous process
NOTE For initial type test (ITT) and factory production control (FPC), each line is considered separately.
3.1.2
production unit
equipment that produces products in a discontinuous process
NOTE For ITT and FPC, units using the same process in one factory are considered together (as one production
line).
3.1.3
minimum service temperature
lowest temperature to which a thermal insulation product may be exposed at a given thickness and at which it
will continue to function within specified limits of performance
NOTE The required performance may be in the areas of dimensional stability, thermal properties and mechanical
properties.
3.2 Symbols, units and abbreviated terms
3.2.1 Symbols and units
Symbol Quantity Unit
d inside diameter of pipe section mm
b width mm
t thickness mm
t declared thickness of the product mm

dec
S deviation from linearity mm
lin
l length mm
S deviation from squareness of boards on length and width mm/m

h
S deviation from squareness of boards on thickness mm

d
S deviation from flatness mm

max
∆ε relative change in width %

b
∆ε relative change in thickness %

d
∆ε relative change in length %

l
λ thermal conductivity W/(m·K)
λ declared thermal conductivity W/(m·K)

D
µ water vapour diffusion resistance factor —
σ compressive stress at 5 % deformation kPa
5
σ compressive strength kPa

m
S deviation from squareness for pipe insulation mm
p
3
ρ apparent density kg/m

a
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ISO 8143:2010(E)
3.2.2 Abbreviated terms for declared properties
Abbreviated term Declared property
CS(Y) declared level for compressive strength
CS(5) declared level for compressive stress at 5 % deformation
Cl declared level for chloride content
F declared level for fluoride content
Na declared level for sodium
K declared level for potassium content
pH declared level for pH
L declared class for length tolerances
MU declared value for water vapour diffusion resistance factor
P declared value for flatness tolerances
S declared class for squareness tolerances
declared level for maximum service temperature
ST (+)
declared level for minimum service temperature
ST (−)
T declared class for thickness tolerances
W declared class for width tolerances
3.2.3 Abbreviated terms
Abbreviated term Meaning
CS Calcium silicate
ITT Initial type test
ML Manufacturer's literature
FPC Factory production control
4 Requirements
4.1 General
Product properties shall be assessed in accordance with Clause 5. To comply with this International Standard,
products shall meet the requirements of 4.2, and the requirements of 4.3, as appropriate.
The test methods to be used for determination of each property are given in Table 4, which also shows the
required test specimen dimensions and the minimum number of test specimens required to give one test
result.
One test result for a product property is the average of the measured values on the number of test specimens
given in Table 4.
For FPC, see Annex A.
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ISO 8143:2010(E)
4.2 For all applications
4.2.1 Thermal conductivity
The thermal conductivity values shall be declared by the manufacturer at reference mean temperatures
covering the product service temperature range. The following conditions apply:
⎯ the measured values shall be expressed with three significant figures;
⎯ the declared conductivity curve shall be given as a limit curve, as defined in ISO 13787.
4.2.2 Dimensions and tolerances
4.2.2.1 Linear dimensions
The length, l, width, b, and thickness, t, of boards and the dimensions of pipe sections and prefabricated ware
shall be declared. When determined, no test result shall deviate from the declared values by more than the
tolerance given in Table 1.
Table 1 — Dimensional tolerances
Form of delivery Length Width Thickness Inside diameter
+3
a a
Board mm
± 3 mm or ± 0,6 % ± 3 mm or ± 0,4 %
−2
+3
a
mm
Pipe section or segment 0 mm to +5 mm
± 3 mm or ± 0,6 %
−2

a
Whichever gives the greatest numerical tolerance.

4.2.2.2 Squareness
The deviation from squareness of boards on length and width, S , shall not exceed 6 mm/m and the deviation
b
from squareness of boards on thickness, S , shall not exceed 2 mm. For pipe sections and segments, the
d
deviation from squareness, S , shall not exceed 3 mm.
p
4.2.2.3 Flatness
The deviation from flatness, S , shall not exceed 6 mm.
max
4.2.2.4 Pipe section linearity
The deviation from linearity, S , shall not exceed 3 mm or 0,6 % on length, whichever gives the greatest
lin
numerical tolerance.
4.2.3 Dimensional stability
Standard atmospheres used for initial and final conditioning shall be chosen in accordance with 5.2.
The test shall be carried out after storage for 48 h at (23 ± 2) °C and (90 ± 5) % relative humidity. The relative
changes in length, ∆ε , width, ∆ε , and thickness, ∆ε , shall not exceed 1,0 %.
l b d
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ISO 8143:2010(E)
4.2.4 Fire properties
It is recommended that the fire properties with respect to reaction to fire be assessed according to the
legislation in the individual territories in which the product is to be used.
4.2.5 Durability characteristics
4.2.5.1 General
The appropriate durability characteristics have been considered and are covered in 4.2.5.2, 4.2.5.3 and
4.2.5.4.
4.2.5.2 Durability of fire properties against ageing/degradation and high temperature
The fire properties in respect to reaction to fire performance of CS products does not change with time or
when subjected to high temperature.
4.2.5.3 Durability of thermal resistance against ageing/degradation
The thermal conductivity of CS products does not change with time.
4.2.5.4 Durability of thermal resistance against high temperature
The thermal conductivity of CS products does not change with time at a high temperature.
4.3 For specific applications
4.3.1 General
If there is no requirement for a property, described in 4.3 for a product in use, then that property need not be
determined and declared by the manufacturer.
If a property described in 4.3 is declared, it shall be determined in accordance with the test method shown in
Table 4.
NOTE For information on additional properties, see Annex B.
4.3.2 Maximum service temperature
At the maximum service temperature, the relative changes in length, ∆ε , and width, ∆ε , shall not exceed 2 %.
l b
The maximum service temperature, ST (+), shall be declared in °C in levels with steps of 50 °C as given in the
examples shown in Table 2.
Table 2 — Levels for maximum service temperature
Level Requirement
°C
ST (+) 650 650
800
ST (+) 800
ST (+) 1 000 1 000
ST (+) 1 100 1 100

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ISO 8143:2010(E)
4.3.3 Minimum service temperature
The minimum service temperature, ST (−), shall be declared in levels with steps of 50 °C.
At the minimum service temperature, ST (−), the relative changes in length, ∆ε, and in width, ∆ε , shall not
l b
exceed 2 %.
Minimum service temperature within the scope of this International Standard, but above 0 °C, need not be
tested.
4.3.4 Compressive stress or strength
No test result shall be lower than the value, given in Table 3, for the declared level.
Table 3 — Levels for compressive stress at 5 % deformation or compressive strength
Level Requirement
kPa
CS (5\Y) 300
> 300
CS (5\Y) 500 > 500
CS (5\Y) 1 000
> 1 000
CS (5\Y) 1 500
> 1 500
CS (5\Y) 2 000 > 2 000
CS (5\Y) 3 000 > 3 000
CS (5\Y) 4 000 > 4 000
CS (5\Y) 5 000
> 5 000
CS (5\Y) 10 000
> 10 000

NOTE ISO 29469 is not applicable to pipe sections.
4.3.5 Trace quantities of water-soluble ions and the pH-value
Trace quantities of water-soluble ions and the pH-value shall be declared as levels in milligrams per kilogram
of product and the pH-value as levels in steps of 0,5. For chloride and fluoride, no test result shall exceed the
declared value. For sodium and potassium, no test result shall be below the declared value. For the pH-value,
no test result shall deviate from the declared value by more than 1,0.
4.3.6 Water vapour diffusion resistance
Calcium silicate products are used for applications at high temperatures where high humidity and water
adsorption are irrelevant. In exceptional cases, the water vapour diffusion resistance factor, µ, may be
measured and declared.
4.3.7 Short-term water absorption by partial immersion
Calcium silicate products may absorb water under poor storage conditions. The product may be tested for
short-term water absorption by partial immersion.
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ISO 8143:2010(E)
4.3.8 Release of dangerous substances
It is recommended that the release of dangerous substances be assessed according to the regulations and
codes pertaining in the individual territories in which the product is to be used.
5 Test methods
5.1 Sampling
Flat test specimens shall be taken from the same sample and sufficient to cover the needed tests. Pipe
section specimens shall be taken from a sample consisting of at least three full-sized sections.
If this is not possible, the properties of the product shall be measured on the boards from which the product is
fabricated. In all cases, dimensions and, when relevant, squareness and flatness shall be measured on the
finished product.
5.2 Conditioning
Test specimens are to be conditioned as specified in the relevant test standard. The surfaces of the test
specimens shall be free of dust and water.
In cases of dispute or when obtaining comparative data on products, such as for databases, the test
specimens shall be conditioned by storage at (23 ± 2) °C and (50 ± 10) % relative humidity, until constant
mass is reached.
Constant mass is reached when the change of mass between three consecutive weighings made 24 h apart is
less than 0,1 % of the total mass (see ISO 12570).
5.3 Testing
5.3.1 General
Table 4 gives the dimensions of the test specimens, the minimum number of test specimens required to get
one test result and any specific conditions which are necessary.
In the case of pipe sections and prefabricated wares cut from boards, the properties shall be determined on
the boards from which they are cut, except dimensions and, where relevant, linearity and squareness.
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ISO 8143:2010(E)
Table 4 — Test methods, test specimens and conditions
Dimensions in millimetres
a
Clause Test method Test specimens Specific
conditions
b
No. Title Flat Pipe section Dimensions Minimum
number to get
one test result
4.2.1 Thermal conductivity ISO 8894-1 W 300 × 300 × t 1
 ISO 8302 W 200 × 100 × t 1
See Annex C
  ISO 8497 Full-sized 1
4.2.2.1 Linear dimensions
Length and width ISO 29465 EN 13467 Full-sized 1
—
Thickness ISO 29466 EN 13467 Full-sized 1
Inside diameter EN 13467 Full-sized 1
4.2.2.2 Squareness ISO 29467 EN 13467 Full-sized 1 —
4.2.2.3 Flatness ISO 29468 — Full-sized 1 —
4.2.2.4 Pipe section linearity EN 13467 Full-sized 1 —
4.2.3 Dimensional stability ISO 29472 Full-sized 1
  500 × 500 × t 3
— —
  250 × 250 × t 3
  200 × 200 × t 3
4.2.4 Fire properties ISO 1182:2002 ISO 1716:2002 — — —
4.3.2 Maximum service ISO 2477 ISO 2477 100 × 100 × t
3 see 5.3.3
temperature
4.3.3 Minimum service See Annex D
— — — —
temperature
4.3.4 Compressive stress ISO 29469 see
or strength — ISO 29469:2008, 3 —
6.1
4.3.5 Trace quantities of EN 13468
water-soluble ions — — 3 20 g
and the pH-value
4.3.6 Water vapour ISO 21129 EN 13469 see see
diffusion resistance EN 13469:2002, 3 EN 13469:2002,
6.1 and 6.2 6.1
4.3.7 Short-term water ISO 29767  4
—
absorption by partial
EN 13472 200 × 200 × t 4
immersion
4.3.8 Release of
dangerous — — — — —
c
substances
a
All test methods referenced in this table are normative.
b
Full-sized product thickness, except for 4.2.3.
c
Test methods are not yet available.

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ISO 8143:2010(E)
5.3.2 Thermal conductivity
The thermal conductivity values shall be determined by the manufacturer and verified in accordance with
ISO 13787.
For flat specimens, thermal conductivity shall be based upon measurements carried out in accordance with
ISO 8302 or, where necessary for reasons of practicability, ISO 8894-1 (when this method is calibrated
against ISO 8302).
For cylindrical specimens, ISO 8497 shall be used.
The tests in accordance with ISO 8497 may be replaced by tests according to ISO 8894-1 or ISO 8302
provided that it has been demonstrated that the results are safe (higher) values.
The thermal conductivity shall be determined for the full temperature range for the product.
For factory production control, see Annex A.
The thermal conductivity shall be measured directly at the measured thickness. If this is not possible, it shall
be determined by measurements on other thicknesses of the product, provided:
⎯ the product is of similar chemical and physical characteristics and is produced on the same production
unit;
⎯ it can be demonstrated that the thermal conductivity, λ, does not vary more than 5 % over the range of
thicknesses where the calculation is applied.
Where a product is manufactured in a range of thicknesses and the manufacturer chooses to characterize the
entire range by declaring only one thermal conductivity, λ, the manufacturer shall declare the highest thermal
conductivity of the range. In the case of pipe sections, measurements made on two internal diameters of pipe
sections at the greatest and smallest insulation thickness for each of the diameters are deemed to be
representative of the total product range.
NOTE 1 Suitable sizes are internal diameters of 48 mm and 194 mm.
The guarded hot plate method ISO 8302 or the hot wire methods ISO 8894-1 shall be deemed to be suitable
methods for measurement of pipe sections having a diameter exceeding 500 mm. Flat slabs shall be prepared
having the same thickness and density as the sections.
NOTE 2 For further guidance on the preparation of test specimens for thermal conductivity, see Annex C.
5.3.3 Maximum service temperature
5.3.3.1 The maximum service temperature shall be determined in accordance with ISO 2477, at the
declared maximum service temperature with the exception that the minimum test temperature shall be 650 °C.
Specimens for testing the maximum service temperature of pipe sections and segments may be cut from flat
boards with the same composition and density as the pipe section or segment product.
5.3.3.2 The test specimens shall be square cut with a cross-section of 100 mm × 100 mm.
The thickness shall always be product thickness for all applications.
5.3.4 Minimum service temperature
The minimum service temperature, ST (−), shall be determined in accordance with Annex D.
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ISO 8143:2010(E)
5.3.5 Fire properties
Fire properties with respect to reaction to fire shall be determined in accordance with ISO 1182 and ISO 1716,
if no national standard or regulation has been established.
6 Designation code
A designation code for the product shall be given by the manufacturer. The following shall be included except
when there is no requirement for a property described in 4.3:
⎯ The calcium silicate abbreviated term CS
⎯ This International Standard number ISO 8143
⎯ Maximum service temperature ST (+) i
⎯ Compressive stress at 5 % deformation or compressive strength CS (5\Y) i
⎯ Water-soluble chloride level Cli
⎯ Water-soluble fluoride level Fi
⎯ Water-soluble sodium level Nai
⎯ Water-soluble potassium level Ki
⎯ pH-value pHi
⎯ Water vapour diffusion resistance factor Mui
where “i” shall be used to indicate the relevant class or level.
The designation code for a CS product is illustrated by the following example:
CS – ISO 8143 – ST (+) 1 050 – CS (5) 1 500
7 Evaluation of conformity
The manufacturer or its authorized representative shall be responsible for the conformity of its product with the
requirements of this International Standard. The evaluation of conformity shall be carried out in accordance
with ISO 12576-1 and shall be based on initial type testing (ITT) and factory production control (FPC) by the
manufacturer, including product assessment and tests on samples taken at the factory.
ITT shall be carried out in accordance with ISO 12576-1 for all characteristics declared.
For ITT testing, the λ curve and the maximum and minimum temperature characteristics, only one test result
is required using test specimens from four different production dates.
For the evaluation of the conformity of a λ curve over a product full service range, ISO 13787 is applicable.
FPC testing shall be made for the characteristics listed in Annex A, with no additional testing where the
frequency is noted as ITT.
If a manufacturer decides to group its products, it shall be done in accordance with ISO 12576-1.
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ISO 8143:2010(E)
The minim
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