3M EW-5005 Technical Data Sheet

April 2020

3M™ Scotch-Weld™ Structural Adhesive
Primer EW-5005

Technical Data Sheet

Product Description

3M™ Scotch-Weld™ Structural Adhesive Primer EW-5005 is a water-based, non-chromated, corrosion­inhibiting structural adhesive primer.

Benefits

• For use with conventional High Volume Low Pressure (HVLP) spray equipment.

• Excellent corrosion resistance.

• Compatible with 3M™ Surface Pre-treatment AC-130-2 sol-gel surface preparation process for adhesive

bonding.

• Processable with 250 – 350

o

F (121 – 177oC) curable epoxy film and paste adhesives.

• Can be cured from 250 – 350

o

F (121 – 177oC).

• Service temperature from -67 – 350

o

F (55 – 177oC).

Typical Uncured Physical Properties

Note: The following technical information and data should be considered representative or typical only and

should not be used for specification purposes.

Color

Green

Base

Epoxy

Vehicle

Distilled water and organic co-solvents

Solids Content

20 ± 2%

Net Weight

8.7 lbs/gallon (1.04 g/cc)

Storage

35 to 45°F (1 to 7°C) [DO NOT FREEZE]

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Typical Cured Physical Properties

Note: The following technical information and data is based upon limited 3M testing conditions and are considered typical values
and should not be used for specification purposes.

I. Key Specifications

Appearance

Glossy to Semi‐glossy

Air Dry Tack

None

Pencil Hardness

>7H

Min. Thickness to MEK Resistance:

0.10 – 0.14 mil (2.5 – 3.6µ)1

1

Tested according to ASTM D5402.

II. Overlap Shear Per ASTM D1002

Test Temperature

‐67°F (‐55°C)

3M™ Scotch‐Weld™ Structural

Adhesive Film AF 163‐2K .06WT

6400 psi (44 MPa)

75°F (24°C)

6000 psi (41 MPa)

180°F (82°C)

3700 psi (25 MPa)

250°F (121°C)

2000 psi (14 MPa)

300°F (121°C) ‐‐‐‐‐‐‐‐‐‐

350°F (177°C) ‐‐‐‐‐‐‐‐‐‐

AF 163-2K Adhesive Cure: 250°F (121°C) for 60 minutes at 35 ± 5 psi, 4 to 5°F/min rise rate.
Primer Cure: Minimum 30 minutes air dry followed by 60 minutes at 250°F (121°C).
Substrate: 0.063" Bare Aluminum 2024-T3
Surface Treatment: Phosphoric Acid Anodize per ASTM D3933
Crosshead Speed: 0.05"/min

III. Floating Roller Peel per ASTM D3167

Test Temperature

3M™ Scotch‐Weld™ Structural Adhesive Film

AF 163‐2K .06WT

75°F (24°C

75 lbf/in (13.1 N/mm)

180°F (82°C)

70 lbf/in (12.3 N/mm)

AF 163-2K Adhesive Cure: 250°F (121°C) for 60 minutes at 35 ± 5 psi, 4 to 5°F/min rise rate.
Primer Cure: Minimum 30 minutes air dry followed by 60 minutes at 250°F (121°C).
Substrate: Bare Aluminum 2024-T3, 0.025" peel sheet and 0.063” backer sheet.
Surface Treatment: Phosphoric Acid Anodize per ASTM D3933
Test Speed: 6"/min

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Note: The following technical information and data is based upon limited 3M testing conditions and are considered typical values
and should not be used for specification purposes.

IV. Metal to Metal Climbing Drum Peel per ASTM D1781

Test Temperature

3M™ Scotch-Weld™ Structural

Adhesive Film AF 163-2K .06WT

75°F (24°C)

80 in-lb/in (356

Nm/m)

AF 163-2K Adhesive Cure: 250°F (121°C) for 60 minutes at 35 ± 5 psi, 4 to 5°F/min rise rate.
Primer Cure: Minimum 30 minutes air dry followed by 60 minutes at 250°F (121°C).
Substrate: Bare Aluminum 2024-T3, 0.020" peel sheet.
Surface Treatment: Phosphoric Acid Anodize per ASTM D3933
Test Speed: 3"/min

VI. Honeycomb Climbing Drum Peel per ASTM D1781

Test Temperature

3M™ Scotch-Weld™ Structural

Adhesive Film AF 163-2K .06WT

75°F (24°C)

20 in-lb/1-in (89

Nm/m)

AF 163-2K Adhesive Cure: 250°F (121°C) for 60 minutes at 35 ± 5 psi, 4 to 5°F/min rise rate.
Primer Cure: Minimum 30 minutes air dry followed by 60 minutes at 250°F (121°C).
Substrate: Bare Aluminum 2024-T3, 0.020" peel sheet.
Core: 1/4" cell, 5052 alloy, 1/2" thick, 4-mil foil, non-perforated.
Surface Treatment: Phosphoric Acid Anodize per ASTM D3933
Test Speed: 3"/min

Product Application

Note: This information is provided as a general application guideline based upon typical conditions. No two applications are identical
due to differing assemblies, method of heat and pressure application, production equipment and other limitations. It is therefore
suggested that experiments be run, within the actual constraints imposed, to determine optimum conditions for your specific
application and to determine suitability of product for particular intended use.

I. Surface Preparation

A thoroughly cleaned, dry, and grease-free surface is essential for maximum performance. Cleaning methods that will produce a
break-free water film on metal surfaces are generally satisfactory.

For aluminum, the best performance will be achieved with surface preparation consisting of solvent degreasing, alkaline cleaning,
chemical etching and phosphoric acid anodizing according to ASTM D3933.

3M™ Surface Pre-Treatment AC-130-2 may be applied to surfaces after manually deoxidizing the surface by either 1) grit blasting;

2) sanding with #180 or finer sandpaper, or 3) Scotch-Brite™ pad abrasion. The success of the bonding operation relies on the
thorough de-oxidation and preparation of the metal surface. See the 3M™ AC-130-2 technical data sheet for more
information on application and use of AC-130-2.

II. Agitation

Thoroughly mix 3M™ Scotch-Weld™ Structural Adhesive Primer EW-5005 prior to transferring primer to the spray system. After
agitation, ensure that that all solids are properly dispersed including any settling on the bottom of the container. Excess shaking of the
container may cause foam to form.

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III. Spray Procedure

1)

Equipment and Settings

Spray Equipment

Conventional HVLP spray gun1, e.g.
3M™ Accuspray™ Spray Gun Model HG14, 1.4mm, #16577

Fluid and Air Nozzle

1.3 mm or less for siphon or gravity feed guns

1.0 mm or less for pressure feed guns

Atomizing Pressure

6 to 10 psi (40 to 69 kilopascal) at the air cap (gun tip)

Fluid Nozzle Setting

1/2 to 3/4 turn out from close position

Fan Pattern

Adjust fan pattern control to provide about 45° to 60° spray pattern

Gun Distance

8 to 16 inch (20 to 41 cm) from the panel

1

Can be either a siphon or gravity-feed gun.

2)

Spray Process

• Allow the primer to reach ambient temperature and humidity conditions before spraying, preferably 65°F (18°C) or

higher, but not to exceed 90°F (33°C).

• The spray and drying of water-based products varies with temperature and humidity conditions. To assure good spray

appearance, the booth temperature should be above 70°F (21°C), and humidity should be below 65%.

• For best post-cured appearance, allow flash-off between passes. At high humidity and low temperature conditions,

spray less material each pass, and allow extra passes to achieve the designated thickness.

IV. Primer Dry and Cure

Air-Dry: 30 minutes at 75 ± 5°F (24 ± 3°C), followed by:
Cure: 60 minutes at 250 ± 5°F (121 ± 3°C).

IV. Primer Thickness

Optimal thickness: 0.15 to 0.35 mil (3.8 to 8.89 μm) after cure.

1, 2

1

Primer thickness can be measured after the primer has flashed dried, prior to bake. If thickness is measured prior to bake,

about 0.02 to 0.05 mil (0.5 to 1.2 μm) shrinkage will occur after bake.

2

The recommended thickness should be achieved within 4 to 6 passes (2 to 3 box coats) depending on temperature and
humidity. One box coat is defined as two passes, perpendicular to each other.

Shelf Life and Storage Conditions

3M™ Scotch-Weld™ Structural Adhesive Primer EW-5005 shelf life is 12 months from the date of shipment from 3M when stored
between 35° to 45°F (1° to 7°C) in the original unopened container. Avoid exposing the material to temperature below 32°F
(0°C) or above 90°F (32°C). DO NOT FREEZE. Containers should be agitated after 6 months of storage at customer site.

The out time of Scotch-Weld EW-5005 primer is approximately 20 days when stored below 80°F (27°C).
3M Scotch-Weld EW-5005 primer shall be maintained between 35° to 55°F (1° to 13°C) during shipping. For shipments between 55°
and 80°F (13° and 27°C), the time above 55°F (13°C) shall be subtracted from the out-time of the material.

Authorization to Use

Ensure products meet all applicable specifications, standards, and maintenance manual requirements for the platform
being worked on and validate all aircraft approvals against current technical documentation.

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Precautionary Information

Refer to Product Label and Safety Data Sheet (SDS) for health and safety information before using this product. Always wear
personal protection equipment, such as half or full face piece air purifying respirator suitable for organic vapors and particulates. For

additional health and safety information, please visit www.3m.com/MSDS or call 1-800-364-3577 or [phone].

Additional Information

In the U.S. call toll free 1-800-235-2376, or fax [phone] or 651-737-2171. For U.S. Military, call 1-866-556-5714. If you are
outside of the U.S., please contact your nearest 3M representative.

These products are manufactured under a 3M Quality Management System registered to the AS9100 standard

Technical Information: The technical information, guidance, and other statements contained in this document or otherwise provided by
3M are based upon records, tests, or experience that 3M believes to be reliable, but the accuracy, completeness, and representative
nature of such information is not guaranteed. Such information is intended for people with knowledge and technical skills sufficient to
assess and apply their own informed judgment to the information. No license under any 3M or third party intellectual property rights is
granted or implied with this information.
Product Selection and Use: Many factors beyond 3M’s control and uniquely within user’s knowledge and control can affect the use and
performance of a 3M product in a particular application. As a result, customer is solely responsible for evaluating the product and
determining whether it is appropriate and suitable for customer’s application, including conducting a workplace hazard assessment and
reviewing all applicable regulations and standards (e.g., OSHA, ANSI, etc.). Failure to properly evaluate, select, and use a 3M product
and appropriate safety products, or to meet all applicable safety regulations, may result in injury, sickness, death, and/or harm to
property.
Warranty, Limited Remedy, and Disclaimer: Unless a different warranty is specifically stated on the applicable 3M product packaging or
product literature (in which case such warranty governs), 3M warrants that each 3M product meets the applicable 3M product
specification at the time 3M ships the product. 3M MAKES NO OTHER WARRANTIES OR CONDITIONS, EXPRESS OR IMPLIED,
INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OR CONDITION OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE, OR ARISING OUT OF A COURSE OF DEALING, CUSTOM, OR USAGE OF TRADE. If a 3M product does not
conform to this warranty, then the sole and exclusive remedy is, at 3M’s option, replacement of the 3M product or refund of the
purchase price.

Limitation of Liability: Except for the limited remedy stated above, and except to the extent prohibited by law, 3M will not be liable for
any loss or damage arising from or related to the 3M product, whether direct, indirect, special, incidental, or consequential (including,
but not limited to, lost profits or business opportunity), regardless of the legal or equitable theory asserted, including, but not limited to,
warranty, contract, negligence, or strict liability.

Automotive & Aerospace Solutions Division
3M Center
St. Paul, MN 55144-1000
Phone [phone]
Web www.3M.com/aerospace

Issue date: 4/2020

3M, Scotch-Weld, Accuspray and Scotch­Brite are trademarks of 3M Company.
All other trademarks are the property of their
respective owners.
© 3M 2020. All rights reserved.

Technical Data Sheet

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