EN 3792:2022

SLOVENSKI STANDARD
01-julij-2022
Aeronavtika - Anaerobne polimerizirajoče zmesi - Tehnična specifikacija
Aerospace series - Anaerobic polymerisable compounds - Technical specification
Luft- und Raumfahrt - Anaerobe polymerisierbare Klebstoffe - Technische
Lieferbedingungen
Série aérospatiale - Composés polymérisables anaérobies - Spécification technique
Ta slovenski standard je istoveten z: EN 3792:2022
ICS:
49.025.99 Drugi materiali Other materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 3792
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2022
EUROPÄISCHE NORM
ICS
English Version
Aerospace series - Anaerobic polymerisable compounds -
Technical specification
Série aérospatiale - Composés polymérisables Luft- und Raumfahrt - Anaerobe polymerisierbare
anaérobies - Spécification technique Klebstoffe - Technische Lieferbedingungen
This European Standard was approved by CEN on 26 August 2019.

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 CEN-CENELEC Management Centre 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 CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3792:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Requirements . 5
5 Quality assurance . 7
6 Acceptance . 7
7 Packaging . 8
8 Marking . 8
9 Certificate of conformity . 8
Annex A (normative) Test for colour . 9
Annex B (normative) Test for fluorescence . 10
Annex C (normative) Determination of viscosity and thixotropic index . 11
Annex D (normative) Determination of retention of torque strength after 1 000 h at 100 °C and
150 °C . 12
Annex E (normative) Determination of retention of torque strength after 168 h in boiling water . 13
Annex F (normative) Determination of retention of torque strength after 2 h at –55 °C . 14
Annex G (normative) Determination of retention of static shear strength after 1 000 h at 100 °C
and 150 °C . 15
Annex H (normative) Determination of stability at 100 °C . 16
Bibliography . 17

European foreword
This document (EN 3792:2022) has been prepared by the Aerospace and Defence Industries Association
of Europe — Standardization (ASD-STAN).
After enquiries and votes carried out in accordance with the rules of this Association, this Standard has
received the approval of the National Associations and the Official Services of the member countries of
ASD, prior to its presentation to CEN.
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 November 2022, and conflicting national standards shall
be withdrawn at the latest by November 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.
1 Scope
This document specifies the requirements for a range of one part anaerobic polymerisable compounds
which polymerises upon the exclusion of oxygen and activation by a metal surface.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
EN 3793, Aerospace series — Anaerobic polymerisable compounds — Test method — Determination of
1)
static shear strength
EN 3794, Aerospace series — Anaerobic polymerisable compounds — Test method — Determination of
1)
torque strength on threaded fasteners
EN 3795, Aerospace series — Anaerobic polymerisable compounds — Test method — Determination of
1)
freedom from excessive cure rate
EN 3796, Aerospace series — Anaerobic polymerisable compounds — Test method — Determination of
1)
ability of anaerobic polymerisable compounds to set on metal surfaces
ISO 3104, Aerospace series — Petroleum products — Transparent and opaque liquids — Determination of
kinematic viscosity and calculation of dynamic viscosity
ASTM-D 2196, Standard Test Methods for Rheological Properties of Non-Newtonian Materials by
2)
Rotational Viscometer
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• ISO Online browsing platform: available at http://www.iso.org/obp
• IEC Electropedia: available at http://www.electropedia.org/
3.1
activator
substance used in small proportions to increase the reaction rate of chemical systems
3.2
anaerobic polymerisable compound
polymerisable composition which polymerises upon the exclusion of oxygen and activation by a metal
surface
1) Published as ASD-STAN Standard at the date of publication of this standard by AeroSpace and Defence industries
Association of Europe — Standardization (ASD-STAN), http://www.asd-stan.org/
2) Published by: ASTM National (US) American Society for Testing and Materials http://www.astm.org/
3.3
batch
quantity of homogeneous compound prepared ready for use from the same processing operation with
traceability to its individual constituent components
3.4
curing
increasing the cohesive strength by chemical change
3.5
fluorescence
property of absorbing of one wavelength and emitting light of another wavelength
Note 1 to entry: The phenomenon ceases when the source of light is cut off.
3.6
shear strength
force necessary to bring the cured compound to the point of failure by means of forces applied in a shear
mode
3.7
thixotropy
decrease of the apparent viscosity under shear stress followed by a gradual recovery when the stress is
removed
Note 1 to entry: The effect is time-dependent.
3.8
thixotropic index
ratio of the viscosity measured at one shear rate to that at another shear rate
Note 1 to entry: The shear rates by convention, differ by a factor of 10; this is achieved by changing the rotational
speed of the viscometer by a factor of 10.
3.9
torque strength
force necessary to rotate a nut on a bolt where engaged threads are coated with cured compound
3.10
viscosity
property of a material to resist flow in shear
4 Requirements
4.1 Composition
The compounds shall consist essentially of acrylic esters of a polyhydroxy compound. They shall be either
of the following:
a) generally clear homogenous liquids free from particulate solids;
b) materials containing solids in suspension.
4.2 Colour and visual appearance
4.2.1 When tested in accordance with Annex A, the compounds shall be substantially uniform in colour
and free from contamination and foreign matter.
4.2.2 When fluorescence is a requirement of the material standard, the compounds shall be tested in
accordance with Annex B and shall be seen to fluoresce.
4.3 Viscosity
4.3.1 When tested in accordance with ISO 3104 and Annex C, the viscosity of the components shall
comply with the material standard.
4.3.2 When tested in accordance with Method B of ASTM-D 2196 and Annex C, the thixotropic index
shall comply with the material standard.
4.4 Torque strength
4.4.1 When tested in accordance with EN 3794, the torque strength at (23 ± 2) °C shall comply with the
material standard.
4.4.2 When tested in accordance with Annex D, the torque strength after 1 000 h at 100 °C and 150 °C
shall comply with the material standard.
4.4.3 When tested in accordance with Annex E, the torque strength after 168 h in boiling water shall
comply with the material standard.
4.4.4 When tested in accordance with Annex F, the torque strength after 2 h at (- 55 ± 2) °C shall comply
with the material standard.
4.5 Static shear strength
4.5.1 When tested in accordance with EN 3793, the static shear strength at (23 ± 2) °C shall comply
with the material standard.
4.5.2 When tested in accordance with Annex G, the static shear strength after 1 000 h at 100 °C and at
150 °C shall comply with the material standard.
4.6 Stability
The compounds shall remain stable (not polymerise) at 100 °C for a minimum time as stated in the
material standard. The stability at 100 °C shall be determined in accordance with Annex H of this
specification.
4.7 Freedom from excessive cure rate
When tested in accordance with EN 3795, the period for which the compound is free from excessive cure
shall comply with the material standard.
4.8 Ability to set on a zinc surface
The compounds shall have the ability to set on a zinc surface within a time as specified in the material
standard. The method of determination shall be in accordance with EN 3796.
4.9 Shelf life
4.9.1 When stored at a temperature of less than 25 °C in the original unopened containers, the shelf life
of the compound, measured from the date of dispatch by the manufacturer, shall be at least 12 months.
4.9.2 At any time during the shelf life, the compounds shall comply with the property requirements of
the material standard.
5 Quality assurance
5.1 Manufacturer approval
See EN 9100.
5.2 Product qualification
See EN 9133.
5.2.1 In addition to the requirements of EN 9133, the manufacturer or supplier wishing to have his
product(s) qualified shall submit them to a mandated body as designated by ASD-CERT:
a) samples of the anaerobic polymerisable compound(s) for which qualification is sought;
b) test results for the properties listed in the material standards for the same batch of material from
which the submitted samples have been obtained;
c) full instructions for use of the compounds.
5.2.2 All the tests listed in the specification for which qualification is sought shall be carried out on the
samples provided to the mandated body by the manufacturer.
5.3 Inspection and test requirements
An anaerobic polymerisable compound shall be tested as applicable in accordance with the requirements
given in column Q, Table 1, and shall comply with the properties of the material standard.
6 Acceptan
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