Hysol ^® H4500 Email

Methacrylate Adhesive

Description
Dexter Hysol H4500 is a highly thixotropic, two component, room temperature curing, 10:1 mix ratio methacrylate adhesive system formulated specifically for bonding metals such as stainless steel, steel and aluminum. The unique formulation of H4500 allows bonding to metals without the use of a primer. This adhesive contains a corrosion inhibiting additive to insure long term bond durability even when exposed to moisture prone environments. Hysol H4500 forms resilient bonds and maintains its strength over a wide range of temperatures with minimum surface preparation.

Recommended Substrates: steel, aluminum, stainless steel, epoxy coated metal, SMC, and many plastics

Features
Internal metal primer100% reactive                        Superior impact and peel strength
Excellent environmental resistance                         Little or no surface preparation
Offers excellent tolerance to off-ratio mixing         Rapid room temperature cure
Non-sagging gaps filled to ½"

Typical Uncured Properties
                                                     Part A                                 Part B                                         Mixed
Open Time@ 77°F                         -                                           -                                              4 - 6 minutes
Fixture Time @ 180°F                   -                                           -                                              15 - 20 minutes
Color                                            Cream                                  Tan                                           Pale Yellow
Viscosity, cps                                25,000 – 35,000                  35,000 – 45,000                              -
  Brookfield HBT                       Spdl 6 @ 10 rpm                Spdl 6 @ 10 rpm                           -
Specific Gravity                            1.01                                      1.06                                            1.01
Ponds per gallon                         8.40                                      8.83                                            8.45
Mix Ratio
  By Weight                                 9.51                                         -                                                    -
  By Volume                               10                                          1                                                      -

Typical Cured Properties
Tensile Strength (psi)                            3,400 – 3,600                              ASTM D 638
Tensile Elongation (%)                        20 – 30                                        ASTM D 638
Shore D Hardness                                 40 – 45

Performance

Tensile Lap Shear Strength             Tested after a minimum 24 hour cure.
                                                   Bondline                               Test                         Average                               Failure
Substrate                                    Thickness, Mils                    Temp, °F                Results, psi                         Mode
Metals (per ASTM D1002)
Aluminum
2024T3 Etched                                   5                                         -40                            3500                               Cohesive
                                                            5                                         -20                           4100                                Cohesive
                                                            5                                          75                           4500                                Cohesive
                                                            5                                          180                          2600                               Cohesive
                                                            5                                          250                          780                                 Cohesive
As received                                          5                                          77                            3800                               Cohesive
Oil coated, 10W30                              5                                          77                           4000                                Cohesive
5052 As received                                 5                                          77                            2100                               Cohesive

Steel
Smooth                                               5                                          77                           3000                                 Cohesive
Ground                                               5                                          77                           3100                                 Cohesive
Oil coated steel                                    5                                          77                          4000                                  Cohesive
304 Stainless Steel                               5                                          77                           3100                                 Cohesive
Oil coated stainless                             5                                          77                           3000                                 Cohesive
Non-Metallic Substrates (per ASTM D3163)

Acrylic                                                  30                                        77                           600                                   Stock Break
ABS                                                     30                                        77                           750                                   Stock Break
Polycarbonate                                     30                                        77                            750                                  Stock Break
FRP                                                     30                                        77                            800                                  Fiber Tear
RTM                                                   30                                        77                            850                                  Fiber Tear

Peel Strength (pli) per ASTM D 3167

Etched Aluminum                            10                                        77                            60                                    Cohesive

Tensile Lap Shear after Environmental Exposure All exposures are for 30 days. Tested 24 hours after removal. FRP/FRP coupons are 1"by 1", 30 mil bondline; Aluminum is etched with 5 mil bondline. All samples cured three days at 77ºF prior to exposure. Values are psi. Note: All FRP/FRP bonds failed within the FRP.

Environment                                     FRP/FRP                                Aluminum/Aluminum
Control                                                     800                                                      4500
Water at 77ºF                                            800                                                      1000
Salt Water                                                  700                                                      250
100ºF/100%RH                                       800                                                      600
10W30 Motor Oil                                     800                                                     4100
Unleaded Gasoline                                   750                                                      4000
Diesel Fuel                                                750                                                      4000
Antifreeze                                                 700                                                       3300

Handling and Application
Mixing: It is highly recommended that either meter mix equipment or cartridges with static mix nozzles be used
to properly ratio and dispense the adhesive. For hand mixing, combine Part A and Part B in the correct ratio
and mix thoroughly. Once mixed, H4500 should achieve a uniform color. This is important! Heat buildup
during and after mixing is normal. To reduce the likelihood of exothermic reaction or excessive heat buildup,
mix less than 100 grams at a time. Mixing smaller amounts will minimize heat buildup.

Applying: Bonding surfaces should be clean, dry, and free of contamination. Extensive surface preparation is not
required for H4500, and good bonds can be formed on most substrates after a solvent wipe. To assure maximum
bond strength, surfaces must be mated within the adhesive's open time. Use enough material to completely fill
the joint when parts are clamped.

Curing: Parts should remain undisturbed during the interval of time between the material's open time and
fixture time. After the fixture time is achieved the material has reached handling strength. Temperature below
55°F will slow the cure; above 85°F will accelerate cure rate.

Clean Up: It is important to clean up excess adhesive from work area and application equipment before it
hardens. Denatured alcohol and many common industrial solvents are suitable for removing uncured adhesive.
Hysol H4500 is flammable. Keep containers tightly closed after use. Keep away from heat, sparks, and open
flames.

Storage
Hysol adhesives should be stored in a cool, dry place when not used for a long period of time. The shelf life for H4500 is one year from date of manufacture when stored at 40°F and six months when stored at room temperature or 77°F. Exposure above room temperature will reduce shelf life.

Packaging
100 gm Clip Pack          490ml EPS cartridges       5 Gallon Pails         55 Gallon Drums

DISCLAIMER: The information supplied in this document is for guidance only and should not be construed as a warranty. All implied warranties are expressly disclaimed. Including without limitation any warranty of merchantability and fitness for use: All users of the materials are responsible for assuring that it is suitable for their needs, environment and use. All data is subject to change as Dexter deems appropriate.

Users should review the Material Safety Data Sheet (MSDS) and product label for the material to determine possible health hazards, appropriate engineering controls and precautions to be observed in using the material. Copies of the MSDS and label are available upon request.