Technical Data Sheet

Loctite UK Limited, Watchmead,

Product 495
Welwyn Garden City, Herts, AL7 1JB
Technical Services Tel: (01707) 358888 Worldwide Version, February 2001
Customer Services Tel: (01707) 358844

PRODUCT DESCRIPTION
10
LOCTITE® Product 495 is a low viscosity general purpose

2
Tensile strength - N/mm
ethyl cyanoacrylate adhesive. 8 60% RH
TYPICAL APPLICATIONS 6
Bonding rubbers. plastics and metals. 40% RH
4
PROPERTIES OF UNCURED MATERIAL
Typical 2
20% RH
Value Range
Chemical Type Ethyl Cyanoacrylate 0
10 20 30 40 50
Appearance Colourless Seconds
Specific Gravity @ 25°C 1.05
Viscosity @ 25°C, mPa.s (cP)
Brookfield LVT
Spindle 1-30 rpm 25 to 60
Flash Point (COC), °C >80
Vapour pressure mbar: <1

FIXTURING TIME
This is defined as the number of seconds after assembly
when a joint develops a tensile shear strength of 0.1 N/mm2
measured at 22âC, 50% relative humidity according to ASTM
D1002 and DIN 53283. This cure speed is affected by the
nature of the substrate, ambient humidity and temperature.
High cure speed is favoured by thin bond lines and by
avoiding excess adhesive. Performance of Loctite Product
495 on metallic and non-metallic substrates:
Substrate Fixture Time, seconds
Mild steel (degreased) 10 to 30
Aluminium (degreased) 5 to 15
Zinc bichromate 30 to 90
Neoprene rubber <5
Nitrile rubber <5
ABS 10 to 30
PVC 3 to 10
Polycarbonate 20 to 60
Phenolic materials 5 to 20
All surfaces were cleaned by isopropyl alcohol wipe.
Times and strengths can vary considerably for different grades of
plastics, rubber and plated metals.

The effect of relative humidity on cure speed is shown in the

graph, for a cyanoacrylate adhesive to a Buna N rubber.

NOT FOR PRODUCT SPECIFICATIONS.

THE TECHNICAL DATA CONTAINED HEREIN ARE INTENDED AS REFERENCE ONLY.
 TDS 495 January 1990

Where cure speed is inadequate, due to low relative h umidity, Strength test procedure: ASTM D1002/DIN
or large gaps, a LOCTITE ACTIVATOR may be used. This can, 53283
however, lead to a reduction in eventual strength of the bond Substrate: Grit blasted mild steel.
and careful testing is recommended before use in production.
Cure procedure: 1 week at 22âC.
While full functional strength is developed in a relatively short
time, curing continues for at least 24 hours before full
chemical and solvent resistance is developed. 100

% RT Strength
PHYSICAL PROPERTIES OF CURED MATERIAL 75

Full strength achieved after 12 hours at 22°C on most substrates.

50
Coefficient of thermal expansion, ASTM D696, K-1 100 x 10-6
Coefficient of thermal conductivity, ASTM C177, W.m-1K-1 0.1 25
Softening point, °C 165
Recommended gap, mm 0.05 0
-50 0 50 100 150
Maximum gap, mm: 0.05 Temperature in °C
Cleaning solvent: Acetone
Heat Ageing
Electrical Properties
Dielectric constant, ASTM D150 - Strength test procedure: ASTM D1002/DIN
100 Hz: 2 to 3.3 53283
1kHz: 2 to 3.5 Substrate: Grit blasted mild ste el.
10 kHz 2 to 3.5
Cure procedure: 1 week at 22°C.
Dissipation factor, ASTM D150 -
100 Hz < 0.02 100
1kHz < 0.02 60 âC
% Initial Strength, at RT

10 kHz <0.02
75 80 âC
Volume resistivity, ASTM D257 -
ΩCM X 1016 0.2 to 1
50
Surface resistivity - Ω x 1016
1 to 8
25
Dielectric strength, ASTM D149 - kV/mm: 25 100 âC

PERFORMANCE OF CURED MATERIAL 0

2 1000 2000 3000 4000 5000
Tensile shear strength, ASTM D1002, DIN 53283, N/mm -
Hours
Steel * 12 to 26
Aluminium * 12 to 19 CHEMICAL / SOLVENT RESISTANCE
Zinc bichromate 6 to 13
Strength test procedure: ASTM D1002/DIN
ABS 6 to 20
53283
PVC 6 to 20
Polycarbonate 5 to 20 Substrate: Grit blasted mild steel.
Phenolic 5 to 15 Cure procedure: 1 week at 22°C
Neoprene Rubber 5 to 15
Nitrile Rubber 5 to 15 Solvent Temperature % Initial strength
Tensile strength, ASTM D2095, DIN 53288, N/mm2: retained at
Steel 12 to 25 100 hr 500 hr 1000 hr
Buna N Rubber 5 to 15
95% R.H.: 40°C 80 75 65
Peel strength, ASTM D1876, DIN 53282, N/mm2 95% R.H. (polycarbonate) 40°C 100 100 100
Degreased steel <0.5
Motor oil 40°C 100 100 95
* Sand-blasted surface Leaded petrol 22°C 100 100 100

TYPICAL ENVIRONMENTAL RESISTANCE Isopropanol 22°C 100 100 100

Hot Strength Ethanol 22°C 100 100 100

NOT FOR PRODUCT SPECIFICATIONS.

THE TECHNICAL DATA CONTAINED HEREIN ARE INTENDED AS REFERENCE ONLY.
 TDS 495 January 1990

Freon TA 22°C 100 100 100 GENERAL INFORMATION

1.1.1. trichloroethane 22°C 100 100 100 This product is not recommended for use in pure oxygen
and/or oxygen rich systems and should not be selected as a
sealant for chlorine or other strong oxidising materials.

For safe handling information on this product, consult the

Material Safety Data Sheet, (MSDS).

Directions for use

For best performance surfaces should be clean and free of
grease. This product performs best in thin bond gaps,
(0.05mm). Excess adhesive can be dissolved with Loctite
clean up solvents, nitromethane or acetone.

Storage
Product shall be ideally stored in a cool, dry location in
unopened containers at a temperature between 8°C to 21°C
(46°F to 70°F) unless otherwise labelled. Optimal storage
conditions for unopened containers of cyanoacrylate products
are achieved with refrigeration: 2°C to 8°C (36°F to 46°F).
Refrigerated packages shall be allowed to return to room
temperature prior to opening and use. To prevent
contamination of unused product, do not return any material to
its original container. For specific shelf life information contact
your local Technical Service Centre.

Data Ranges
The data contained herein may be reported as a typical value
and/or range (based on the mean value ±2 standard
deviations). Values are based on actual test data and are
verified on a periodic basis.

Note
The data contained herein are furnished for information only
and are believed to be reliable. We cannot assume
responsibility for the results obtained by others over whose
methods we have no control. It is the user's responsibility to
determine suitability for the user's purpose of any production
methods mentioned herein and to adopt such precautions as
may be advisable for the protection of property and of persons
against any hazards that may be involved in the handling and
use thereof. In light of the foregoing, Loctite Corporation
specifically disclaims all warranties expressed or implied,
including warranties of merchantability or fitness for a
particular purpose, arising from sale or use of Loctite
Corporation’s products. Loctite Corporation specifically
disclaims any liability for consequential or incidental
damages of any kind, including lost profits. The discussion
herein of various processes or compositions is not to be
interpreted as representation that they are free from
domination of patents owned by others or as a licence under
any Loctite Corporation patents that may cover such
processes or compositions. We recommend that each
prospective user test his proposed application before
repetitive use, using this data as a guide. This product may be
covered by one or more United States or foreign patents or
patent applications.

NOT FOR PRODUCT SPECIFICATIONS.

THE TECHNICAL DATA CONTAINED HEREIN ARE INTENDED AS REFERENCE ONLY.