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LORD® 850 and 852 acrylic adhesives in combination with LORD Accelerator 25GB can be used to replace welding, brazing, riveting and other mechanical fastening methods. These toughened structural adhesives perform particularly well in low-temperature environments and applications that are subject to high impact, high peel loads or high fatigue. LORD® 850 and 852 adhesives provide a range of working times to accommodate a wide variety of process requirements..
Unit of Measure

Typical Properties

Appearance

 N/A Amber Paste

Brookfield Viscosity at 77 Degree Fahrenheit (ºF) (25 Degree Celsius (ºC)) Temperature

 N/A 100,000 to 500,000 cP

Density

 N/A 8.00 to 8.30 lb/gal959 to 995 kg/m³

Flash Point Temperature

 N/A 59 ºF15 ºC

Note for Typical Properties

 N/A Data is typical and not to be used for specification purposes.

Typical Properties of Adhesive Mixed with Recommended Accelerator

Mix Ratio by Volume, Adhesive to Accelerator

 N/A 10:1

Solids Content

 N/A 100 %

Working Time at 75 Degree Fahrenheit (ºF) (24 Degree Celsius (ºC)) Temperature

 N/A 6 to 10 minutes
Time to Handling Strength at 75 Degree Fahrenheit (ºF) (24 Degree Celsius (ºC)) Temperature1 N/A 18 to 24 minutes

Full Cure Time at 75 Degree Fahrenheit (ºF) (24 Degree Celsius (ºC)) Temperature

 N/A 5 hour

Mixed Appearance

 N/A Red Paste

Note for Typical Properties of Adhesive Mixed with Recommended Accelerator

 N/A Data is typical and not to be used for specification purposes.

Typical Cured Properties

Hardness

 N/A 67 Shore "D"

Tensile Strength at Break

 N/A 2683 psi18.5 MPa

Test Method for Tensile Strength (Modified)

 N/A American Society for Testing and Materials (ASTM D638)

Elongation

 N/A 100 %

Test Method for Elongation (Modified)

 N/A American Society for Testing and Materials (ASTM D638)

Young's Modulus

 N/A 125000 psi862 MPa

Test Method for Young's Modulus (Modified)

 N/A American Society for Testing and Materials (ASTM D638)

Glass Transition Temperature

 N/A 178 ºF81 ºC

Test Method for Glass Transition Temperature (Modified)

 N/A American Society for Testing and Materials (ASTM E1640-99)

Note for Typical Cured Properties

 N/A Data is typical and not to be used for specification purposes.

Bond Performance

Lap Shear Strength at Room Temperature (Aluminum to Aluminum)

 N/A 2880 psi19.9 MPa

Failure Mode for Lap Shear Strength at Room Temperature (Aluminum to Aluminum)

 N/A Cohesive Failure (C)

Lap Shear Strength at Room Temperature (Electrogalvanized Steel (EZG) to Electrogalvanized Steel (EZG))

 N/A 2115 psi14.6 MPa

Failure Mode for Lap Shear Strength at Room Temperature (Electrogalvanized Steel (EZG) to Electrogalvanized Steel (EZG))

 N/A Cohesive Failure (C)

Lap Shear Strength at Room Temperature (Cold Rolled Steel (CRS) to Cold Rolled Steel (CRS))

 N/A 2975 psi20.5 MPa

Failure Mode for Lap Shear Strength at Room Temperature (Cold Rolled Steel (CRS) to Cold Rolled Steel (CRS))

 N/A Cohesive Failure (C)

Lap Shear Strength at 180 Degree Fahrenheit (ºF) (82 Degree Celsius (ºC)) Temperature (Aluminum to Aluminum)

 N/A 1089 psi7.5 MPa

Failure Mode for Lap Shear Strength at 180 Degree Fahrenheit (ºF) (82 Degree Celsius (ºC)) Temperature (Aluminum to Aluminum)

 N/A Cohesive Failure (C)

Lap Shear Strength at 180 Degree Fahrenheit (ºF) (82 Degree Celsius (ºC)) Temperature (Electrogalvanized Steel (EZG) to Electrogalvanized Steel (EZG))

 N/A 1090 psi7.5 MPa

Failure Mode for Lap Shear Strength at 180 Degree Fahrenheit (ºF) (82 Degree Celsius (ºC)) Temperature (Electrogalvanized Steel (EZG) to Electrogalvanized Steel (EZG))

 N/A Cohesive Failure (C)

Lap Shear Strength at 180 Degree Fahrenheit (ºF) (82 Degree Celsius (ºC)) Temperature (Cold Rolled Steel (CRS) to Cold Rolled Steel (CRS))

 N/A 1320 psi9.1 MPa

Failure Mode for Lap Shear Strength at 180 Degree Fahrenheit (ºF) (82 Degree Celsius (ºC)) Temperature (Cold Rolled Steel (CRS) to Cold Rolled Steel (CRS))

 N/A Cohesive Failure (C)

Lap Shear Strength at -30 Degree Fahrenheit (ºF) (-34 Degree Celsius (ºC)) Temperature (Aluminum to Aluminum)

 N/A 3380 psi23.3 MPa

Failure Mode for Lap Shear Strength at -30 Degree Fahrenheit (ºF) (-34 Degree Celsius (ºC)) Temperature (Aluminum to Aluminum)

 N/A Thin Layer Cohesive Failure (TLC)

Lap Shear Strength at -30 Degree Fahrenheit (ºF) (-34 Degree Celsius (ºC)) Temperature (Electrogalvanized Steel (EZG) to Electrogalvanized Steel (EZG))

 N/A 2627 psi18.1 MPa

Failure Mode for Lap Shear Strength at -30 Degree Fahrenheit (ºF) (-34 Degree Celsius (ºC)) Temperature (Electrogalvanized Steel (EZG) to Electrogalvanized Steel (EZG))

 N/A Thin Layer Cohesive Failure (TLC)

Lap Shear Strength at -30 Degree Fahrenheit (ºF) (-34 Degree Celsius (ºC)) Temperature (Cold Rolled Steel (CRS) to Cold Rolled Steel (CRS))

 N/A 4236 psi29.2 MPa

Failure Mode for Lap Shear Strength at -30 Degree Fahrenheit (ºF) (-34 Degree Celsius (ºC)) Temperature (Cold Rolled Steel (CRS) to Cold Rolled Steel (CRS))

 N/A Thin Layer Cohesive Failure (TLC)

Lap Shear Strength after 14 Days at 95 Degree Fahrenheit (ºF) (38 Degree Celsius (ºC)) Temperature, 95% Relative Humidity (RH) (Aluminum to Aluminum)

 N/A 2752 psi19.0 MPa

Failure Mode for Lap Shear Strength after 14 Days at 95 Degree Fahrenheit (ºF) (38 Degree Celsius (ºC)) 95% Relative Humidity (RH) (Aluminum to Aluminum)

 N/A Cohesive Failure (C)

Lap Shear Strength after 14 Days at 95 Degree Fahrenheit (ºF) (38 Degree Celsius (ºC)) Temperature, 95% Relative Humidity (RH) (Electrogalvanized Steel (EZG) to Electrogalvanized Steel (EZG))

 N/A 2016 psi13.9 MPa

Failure Mode for Lap Shear Strength after 14 Days at 95 Degree Fahrenheit (ºF) (38 Degree Celsius (ºC)) Temperature, 95% Relative Humidity (RH) (Electrogalvanized Steel (EZG) to Electrogalvanized Steel (EZG))

 N/A Cohesive Failure (C)

Lap Shear Strength after 14 Days at 95 Degree Fahrenheit (ºF) (38 Degree Celsius (ºC)) Temperature, 95% Relative Humidity (RH) (Cold Rolled Steel (CRS) to Cold Rolled Steel (CRS))

 N/A 2826 psi19.5 MPa

Failure Mode for Lap Shear Strength after 14 Days at 95 Degree Fahrenheit (ºF) (38 Degree Celsius (ºC)) Temperature, 95% Relative Humidity (RH) (Cold Rolled Steel (CRS) to Cold Rolled Steel (CRS))

 N/A Cohesive Failure (C)

Lap Shear Strength after 500 Hours Salt Spray Exposure (Aluminum to Aluminum)

 N/A 2022 psi13.9 MPa

Failure Mode for Lap Shear Strength after 500 Hours Salt Spray Exposure (Aluminum to Aluminum)

 N/A Cohesive Failure (C)/Adhesive Failure (A)

Lap Shear Strength after 500 Hours Salt Spray Exposure (Electrogalvanized Steel (EZG) to Electrogalvanized Steel (EZG))

 N/A 1780 psi12.3 MPa

Failure Mode for Lap Shear Strength after 500 Hours Salt Spray Exposure (Electrogalvanized Steel (EZG) to Electrogalvanized Steel (EZG))

 N/A Cohesive Failure (C)/Adhesive Failure (A)

Lap Shear Strength after 500 Hours Salt Spray Exposure (Cold Rolled Steel (CRS) to Cold Rolled Steel (CRS))

 N/A 1807 psi12.5 MPa

Test Method for Lap Shear Strength after 500 Hours Salt Spray Exposure

 N/A American Society for Testing and Materials (ASTM B117)

Failure Mode for Lap Shear Strength after 500 Hours Salt Spray Exposure (Cold Rolled Steel (CRS) to Cold Rolled Steel (CRS))

 N/A Cohesive Failure (C)/Adhesive Failure (A)

T-Peel Strength at Room Temperature (Aluminum to Aluminum)

 N/A 26 lb/in46 N/mm

Failure Mode for T-Peel Strength at Room Temperature(Aluminum to Aluminum)

 N/A Cohesive Failure (C)

T-Peel Strength at Room Temperature (Electrogalvanized Steel (EZG) to Electrogalvanized Steel (EZG))

 N/A 47 lb/in82 N/mm

Failure Mode for T-Peel Strength at Room Temperature (Electrogalvanized Steel (EZG) to Electrogalvanized Steel (EZG))

 N/A Cohesive Failure (C)

T-Peel Strength at Room Temperature (Cold Rolled Steel (CRS) to Cold Rolled Steel (CRS))

 N/A 49 lb/in86 N/mm

Failure Mode for T-Peel Strength at Room Temperature (Cold Rolled Steel (CRS) to Cold Rolled Steel (CRS))

 N/A Cohesive Failure (C)

Substrate Material

 N/A Aluminum, 0.032" Thick 6061T6 Electrogalvanized Steel (EZG), 0.032" Thick Hot Dipped Galvanized Steel (HDG), 0.032" Thick

Surface Treatment for Aluminum

 N/A Isopropyl Alcohol (IPA) Wipe

Surface Treatment for Electrogalvanized Steel (EZG)

 N/A Isopropyl Alcohol (IPA) Wipe

Surface Treatment for Cold Rolled Steel (CRS)

 N/A Isopropyl Alcohol (IPA) Wipe

Bonded Parameters

 N/A Metal Lap Shears T-Peels

Test Method for Metal Lap Shears

 N/A American Society for Testing and Materials (ASTM D1002)

Test Method for T-Peel (Modified)

 N/A American Society for Testing and Materials (ASTM D1876)

Bond Area for Metal Lap Shears

 N/A 1.0 x 0.5 in

Bond Area for T-Peel

 N/A 1.0 x 3.0 in

Film Thickness for Metal Lap Shears

 N/A 0.010

Film Thickness for T-Peel

 N/A 0.010

Cure Time at Room Temperature (RT) for Metal Lap Shears

 N/A 24 hour

Cure Time at Room Temperature (RT) for T-Peel

 N/A 24 hour

Mix Ratio By Volume for Metal Lap Shears

 N/A 10:1

Mix Ratio By Volume for T-Peel

 N/A 10:1

Shelf Life/Storage

Shelf Life/Storage

 N/A Shelf life is six months when stored below 77 ºF (25 ºC) in original, unopened container. Storage temperatures of 40-50 ºF (4-10 ºC) are recommended. If stored cold, allow product to return to room temperature before using. Protect from exposure to direct

Specifications

Shelf Life

 N/A 6 months

Features

Versatile

 N/A Bonds a wide range of unprepared metals with minimal substrate preparation, as well as polymer composite substrates such as FRP.

Durable

 N/A Provides high strength for high-end structural bonding applications; 100% elongation improves impact strength and fatigue resistance.

Environmentally Resistant

 N/A Resists dilute acids, alkalis, solvents, greases, oils and moisture; provides excellent resistance to indirect UV exposure and weathering.

Temperature Resistant

 N/A Performs at temperatures from -40 ºF to +300 ºF (-40 ºC to +149 ºC), tolerates e-coat bake with cohesive failure at 338 ºF (170 ºC).

Non-Sag

 N/A Remains in position when applied on vertical or overhead surfaces, allowing for greater process flexibility.

Applications

Surface Preparation

 N/A Remove grease, loose contamination or poorly adhering oxides from metal surfaces. Normal amounts of mill oils and drawing compounds usually do not present a problem in adhesion. Most plastics require a simple cleaning before bonding. Some may require abrading for optimum performance.

Applying

 N/A Apply adhesive using handheld cartridges or automatic meter/mix/dispense equipment.
  • Handheld Cartridges
  1. Load the cartridge into the applicator gun and remove the end caps.
  2. Level the plungers by expelling a small amount of adhesive to ensure both sides are level.
  3. Attach mixing tip and expel a mixer’s length of adhesive.
  4. Apply adhesive to substrate and mate the parts within the working time of the adhesive. Clamp in position until adhesive reaches handling strength.
    5. Do not re-expose adhesive to air once parts are mated. Mated parts should be repositioned by sliding to achieve proper alignment.

    • Meter/Mix/Dispense Equipment

    Contact your LORD representative if assistance is needed using this equipment.

Mixing

 N/A Mix LORD® 850 or 852 adhesive with the proper amount of LORD® Accelerator 25GB. Handheld cartridges will automatically dispense the correct volumetric ratio of each component. Even color distribution visually indicates a thorough mix. Once mixed, the adhesive cures rapidly.

Curing

 N/A Cure begins immediately once adhesive and accelerator are mixed. Time to handling strength is dependent on adhesive used. Complete cure requires 2-5 hours at room temperature. Mating surfaces must be held in contact during the entire curing process. Cure rate can be accelerated by applying modest heat [<150 ºF (<66 ºC)]

Cleanup

 N/A Clean equipment and tools prior to the adhesive cure with solvents such as isopropyl alcohol, acetone or methyl ethyl ketone (MEK). Once adhesive is cured, heat the adhesive to 400 ºF (204 ºC) or above to soften the adhesive. This allows the parts to be separated and the adhesive to be more easily removed.

Additional Information

Additional Information

 N/A LORD® 850 and 852 adhesives, when mixed with LORD® Accelerator 25GB, create adhesive systems that bond a wide variety of prepared or unprepared metals and some engineered plastics. These adhesive systems are specifically formulated to provide the highest impact and peel strengths available in a room temperature curing adhesive with exceptional cohesive failure mode.

LORD® Accelerator 25GB allows precise control of the adhesive bondline thickness due to its content of glass beads. For further detailed information, refer to the LORD® Accelerator 25GB data sheet.

Values stated in this technical data sheet represent typical values as not all tests are run on each lot of material produced. For formalized product specifications for specific product end uses

Information provided herein is based upon tests believed to be reliable. In as much as LORD® Corporation has no control over the manner in which others may use this information, it does not guarantee the results to be obtained. In addition, LORD® Corporation does not guarantee the performance of the product or the results obtained from the use of the product or this information where the product has been repackaged by any third party, including but not limited to any product end-user. Nor does the company make any express or implied warranty of merchantability or fitness for a particular purpose concerning the effects or results of such use.

LORD® and "Ask Us How™" are trademarks of LORD® Corporation or one of its subsidiaries.

LORD® provides valuable expertise in adhesives and coatings, vibration and motion control, and magnetically responsive technologies. Our people work in collaboration with our customers to help them increase the value of their products. Innovative and responsive in an ever-changing marketplace, we are focused on providing solutions for our customers worldwide. Ask Us How™.
  • 1 50 psi Shear