Technical Data Sheet

LOCTITE® HY 4090™
July -2019

PRODUCT DESCRIPTION TYPICAL CURING PERFORMANCE

LOCTITE® HY 4090™ provides the following product Curing is initiated on mixing the Part A and Part B components.
characteristics: Handling strength is achieved rapidly; full strength is achieved
over time.
Technology Cyanoacrylate / Epoxy Hybrid
Chemical Type (Part A) Cyanoacrylate Fixture Time
Chemical Type (Part B) Epoxy Fixture time is defined as the time to develop a shear strength
Appearance (Comp. A) Transparent colorless to straw of 0.1 N/mm².
colored liquidLMS Fixture Time @ 25°C, seconds <180LMS
Appearance (Comp. B) Off-white to light yellow gelLMS
Appearance (Mixture) Off-white to light yellow gel Cure Speed vs. Substrate
Components Two components - requires mixing The rate of cure will depend on the substrate used. The graph
Mix Ratio by volume: 1:1 below shows the shear strength developed with time on steel
Part A: Part B lap shears compared to different materials and tested
Viscosity High according to ISO 4587.
Cure Room temperature cure after mixing 100

% of Full Strength on Steel

Application Bonding Steel

LOCTITE® HY 4090™ is a two component, general purpose 75

adhesive which provides a very fast fixture at room
temperature. It is designed to bond a variety of substrates
50
including metals, most plastics and rubbers. LOCTITE® HY Polycarbonate
4090™ provides good temperature and moisture resistance
which also makes it suitable for applications in high 25
temperature/humidity environments. The thixotropic nature Aluminum
makes it suitable for applications where good gap filling
0
properties on rough and poorly fitting surfaces are required. 0.5 1 3 6 12 24 72 168
Cure Time, hours
ISO-10993
An ISO 10993 Test Protocol is an integral part of the Quality Cure Speed vs. Bond Gap
Program for LOCTITE® HY 4090™. LOCTITE® HY 4090™ has The rate of cure will depend on the bondline gap. The following
been tested to Henkel's test protocols based on ISO 10993 graph shows the shear strength developed with time on grit
blasted mild steel lap shears at different controlled gaps and
biocompatibility standards, as a means to assist in the
tested according to ISO 4587.
selection of products for use in the medical device industry.
Certificates of Compliance are available on Henkel's website or 100
% of Full Strength on Steel

0.00 mm
through the Henkel Quality Department.
80
m
TYPICAL PROPERTIES OF UNCURED MATERIAL 0.5 m
m
Part A:
60 1.0 m
Specific Gravity, g/cm³ 1.01
Viscosity, Cone & Plate, mPa·s (cP): 2.0 mm
Temperature: 25 °C 4,000 to 7,000LMS 40
Flash Point - See SDS
20
Part B:
Specific Gravity, g/cm³ 1.06
0
Viscosity, Cone & Plate, mPa·s (cP): 0.5 1 3 6 12 24 72 168
Temperature: 25 °C 25,000 to 40,000LMS Cure Time, hours
Flash Point - See SDS
 TDS LOCTITE® HY 4090™, July -2019

Cure Speed vs. Temperature TYPICAL PERFORMANCE OF CURED MATERIAL

The rate of cure will depend on the ambient temperature. The Adhesive Properties
graph below shows the shear strength developed with time at Cured for 168 hours @ 22 °C
different temperatures on grit blasted mild steel lap shears and Shear Strength, Lap Shear Strength, ISO 4587:
tested according to ISO 4587. Steel (grit blasted) N/mm² 17
(psi) (2,420)
150 Aluminum N/mm² 7.6
% of Full Strength on Steel

40 °C (psi) (1,100)
125 Aluminum (etched) N/mm² 13
(psi) (1,900)
100 Zinc dichromate N/mm² 9.1
22 °C
(psi) (1,320)
75 Stainless steel N/mm² 15
(psi) (2,120)
50 ABS N/mm² 5.2
5 °C
(psi) (750)
25 Phenolic N/mm² 3.2
(psi) (460)
0 Polycarbonate N/mm² 6.9
0.5 1 3 6 12 24 72 168 (psi) (1,000)
Cure Time, hours
Nitrile N/mm² 0.7
(psi) (100)
TYPICAL PROPERTIES OF CURED MATERIAL
Wood (Oak) N/mm² 4.8
Cured for 1 week @ 22 °C
(psi) (700)
Physical Properties:
Epoxy N/mm² 9.1
Glass Transition Temperature, ISO 11359-2, °C 88 (psi) (1,320)
Coefficient of Thermal Expansion, ISO 11359-2 K-1: Polyethylene N/mm² 0.5
Below Tg (88°C) 71×10-06 (psi) (72)
Above Tg (88°C) 175×10-06 Polypropylene N/mm² 0.6
(psi) (87)
Shore Hardness, ISO 868, Durometer D 65 to 69
Tensile Strength, at break, ISO 527-3 N/mm² 7.1
(psi) (1,025) TYPICAL ENVIRONMENTAL RESISTANCE
Tensile Modulus, ISO 527-3 N/mm² 565 Cured for 1 week @ 22 °C
(psi) (81,800) Lap Shear Strength, ISO 4587:
Elongation, at break, ISO 527-3, % 3.6 Steel (grit blasted)

Hot Strength
Tested at temperature
120

100
% Strength @ 22 °C

80

60

40

20

0
-40 -20 0 20 40 60 80 100 120 140 160 180
Temperature, °C

Henkel Americas Henkel Europe Henkel Asia Pacific

+860.571.5100 +49.89.320800.1800 +86.21.2891.8859
For the most direct access to local sales and technical support visit: www.henkel.com/industrial
 TDS LOCTITE® HY 4090™, July -2019

Heat Aging GENERAL INFORMATION

Aged at temperature indicated and tested @ 22 °C This product is not recommended for use in pure oxygen
150 and/or oxygen rich systems and should not be selected as
% Initial Strength @ 22 °C

100 °C a sealant for chlorine or other strong oxidizing materials.

125
120 °C For safe handling information on this product, consult the
100 150 °C
Safety Data Sheet (SDS).

75 Where aqueous washing systems are used to clean the

180 °C
surfaces before bonding, it is important to check for
50 compatibility of the washing solution with the adhesive. In
some cases these aqueous washes can affect the cure and
25 performance of the adhesive.

0
0 200 400 600 800 1000 Directions for use:
Exposure Time, hours 1. Bond areas should be clean and free from grease. Clean
all surfaces with a Loctite® cleaning solvent and allow to
Chemical/Solvent Resistance dry.
Aged under conditions indicated and tested @ 22 °C.
2. To use, Part A and Part B must be blended. Product can
% of initial strength be applied directly from dual cartridge by dispensing
Environment °C 100 h 500 h 1000 h through the mixer head supplied.
Water 22 90 75 70 3. 50g Dual Cartridge: Stand dual cartridge upright for 1
Water 60 80 55 55 minute. Keeping the cartridge in an upright position,
Motor oil 40 120 130 130
insert it into the application gun, remove cap and expel a
small amount of adhesive to be sure both sides are
Unleaded gasoline 22 95 100 105 flowing evenly and freely. Attach the mixing nozzle.
Ethanol 22 85 90 90 4. 400g Dual Cartridge: Stand dual cartridge upright for 1
Isopropanol 22 100 100 95 minute. Remove the cartridge cap and locking ring,
Water/glycol 50/50 87 50 5 5 attach the mixing nozzle and secure with the locking ring.
Load cartridge into the application gun so that the yellow
98% RH 40 85 70 70
label on cartridge is visible above the nozzle. Holding the
95% RH 65 95 85 65 application gun at a 45° angle, with the nozzle tip pointing
upwards, begin dispensing the adhesive until the product
Lap Shear Strength, ISO 4587: reaches the nozzle tip.
Polycarbonate NOTE: A pneumatic application gun is required to apply
the product from the 400g dual cartridge at a maximum
% of initial strength dispense pressure of 2 bar (30 psi).
Environment °C 100 h 500 h 1000 h
5. Dispense and discard a bead as long and as wide as the
mixing nozzle, to ensure sufficient mixing.
98% RH 40 100 90 80
6. Apply the mixed adhesive to one of the bond surfaces to
be joined. Parts should be assembled immediately after
Lap Shear Strength, ISO 4587: the mixed adhesive has been applied.
Aluminum 7. Bonds should be held fixed or clamped until adhesive has
fixtured.
% of initial strength 8. Keep assembled parts from moving during cure. The bond
Environment °C 100 h 300 h 500 h should be allowed to develop full strength before
95% RH 65 100 95 85 subjecting to any service load.

Sterilization Resistance Loctite Material SpecificationLMS

LMS dated May -27, 2013 (Part A) and LMS dated June-10,
Cured for 1 week @ 22 °C
2013 (Part B). Test reports for each batch are available for the
Block Shear Strength, according to ISO 13445 , indicated properties. LMS test reports include selected QC test
PC to PC, tested @ 22°C parameters considered appropriate to specifications for
customer use. Additionally, comprehensive controls are in
Treatment Time % of Initial Strength place to assure product quality and consistency. Special
Ethylene Oxide, 1 cycle 85 customer specification requirements may be coordinated
Ethylene Oxide, 2 cycle 94 through Henkel Loctite Quality.
GAMMA, >50 Kilo gray 109
Autoclave, 1 cycle 45
Autoclave, 5 cycles 31
:

Henkel Americas Henkel Europe Henkel Asia Pacific

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For the most direct access to local sales and technical support visit: www.henkel.com/industrial
 TDS LOCTITE® HY 4090™, July -2019

Storage In case products are delivered by Henkel Corporation, Resin Technology

Group, Inc., or Henkel Canada Corporation, the following disclaimer is
Store product in the unopened container in a dry location. applicable:
Storage information may be indicated on the product container The data contained herein are furnished for information only and are believed to
labeling. be reliable. We cannot assume responsibility for the results obtained by others
Optimal Storage: 2°C to 21°C. Storage below 2°C or 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
greater than 21°C can adversely affect product properties. herein and to adopt such precautions as may be advisable for the protection of
Material removed from containers may be contaminated during property and of persons against any hazards that may be involved in the handling
use. Do not return product to the original container. Henkel and use thereof. In light of the foregoing, Henkel Corporation specifically
Corporation cannot assume responsibility for product which disclaims all warranties expressed or implied, including warranties of
merchantability or fitness for a particular purpose, arising from sale or use
has been contaminated or stored under conditions other than of Henkel Corporation’s products. Henkel Corporation specifically
those previously indicated. If additional information is required, disclaims any liability for consequential or incidental damages of any kind,
please contact your local Technical Service Center or including lost profits. The discussion herein of various processes or
compositions is not to be interpreted as representation that they are free from
Customer Service Representative. domination of patents owned by others or as a license under any Henkel
Corporation patents that may cover such processes or compositions. We
recommend that each prospective user test his proposed application before
Conversions repetitive use, using this data as a guide. This product may be covered by one or
(°C x 1.8) + 32 = °F more United States or foreign patents or patent applications.
kV/mm x 25.4 = V/mil
mm / 25.4 = inches
µm / 25.4 = mil Trademark usage: [Except as otherwise noted] All trademarks in this document
N x 0.225 = lb are trademarks and/or registered trademarks of Henkel and its affiliates in the
U.S. and elsewhere.
N/mm x 5.71 = lb/in
N/mm² x 145 = psi
MPa x 145 = psi
N·m x 8.851 = lb·in
N·m x 0.738 = lb·ft Reference 0.7
N·mm x 0.142 = oz·in
mPa·s = cP

Note:
The information provided in this Technical Data Sheet (TDS) including the
recommendations for use and application of the product are based on our
knowledge and experience of the product as at the date of this TDS. The product
can have a variety of different applications as well as differing application and
working conditions in your environment that are beyond our control. Henkel is,
therefore, not liable for the suitability of our product for the production processes
and conditions in respect of which you use them, as well as the intended
applications and results. We strongly recommend that you carry out your own
prior trials to confirm such suitability of our product.
Any liability in respect of the information in the Technical Data Sheet or any other
written or oral recommendation(s) regarding the concerned product is excluded,
except if otherwise explicitly agreed and except in relation to death or personal
injury caused by our negligence and any liability under any applicable mandatory
product liability law.

In case products are delivered by Henkel Belgium NV, Henkel Electronic

Materials NV, Henkel Nederland BV, Henkel Technologies France SAS and
Henkel France SA please additionally note the following:
In case Henkel would be nevertheless held liable, on whatever legal ground,
Henkel’s liability will in no event exceed the amount of the concerned delivery.

In case products are delivered by Henkel Colombiana, S.A.S. the following

disclaimer is applicable:
The information provided in this Technical Data Sheet (TDS) including the
recommendations for use and application of the product are based on our
knowledge and experience of the product as at the date of this TDS. Henkel is,
therefore, not liable for the suitability of our product for the production processes
and conditions in respect of which you use them, as well as the intended
applications and results. We strongly recommend that you carry out your own
prior trials to confirm such suitability of our product.
Any liability in respect of the information in the Technical Data Sheet or any other
written or oral recommendation(s) regarding the concerned product is excluded,
except if otherwise explicitly agreed and except in relation to death or personal
injury caused by our negligence and any liability under any applicable mandatory
product liability law.

Henkel Americas Henkel Europe Henkel Asia Pacific

+860.571.5100 +49.89.320800.1800 +86.21.2891.8859
For the most direct access to local sales and technical support visit: www.henkel.com/industrial