

-
Description for 3M 3524
A two-part flame retardant epoxy. It can be used for void filling, edge sealing, and as an abradable compound in aircraft engines.Application Type Bond, Seal 1 Part or 2 Part 2-Part Material Form Liquid Industry Aerodynamic flushness, Aircraft engines, Aircraft engines Manufacturer 3M Chemistry Epoxy Application Method Spatula, Trowel Cure Method Base/Accelerator Cure Temperature (°C) 24 Cure Time (min) 2,880 Color Blue, Off-white Density (g/cm³) 29.3 - 31.2 (lbs./ft.3) Key Specifications Meets the flammability requirements of F.A.R. 25.853 (a) and (b). -
Technical Data for 3M 3524
Overview
-
1 Part or 2 Part
- 2-Part
-
Material Form
- Liquid
-
Industry
- Aerospace - Aerodynamic flushness
- Aircraft - Aircraft engines
- Engine - Aircraft engines
- Other - Void filling, Edge sealing, Reinforces honeycomb, Inserts
-
Chemistry
-
Application Method
- Spatula/Trowel - Spatula, Trowel
-
Cure Method
- 2-Part Cure - Base/Accelerator
-
Color
- Blue
- Off-White
-
Key Specifications
- UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association) - Meets the flammability requirements of F.A.R. 25.853 (a) and (b).
Specifications
Cure Specs
Cure Temperature (°C) 24 Cure Time (min) 2,880 Work / Pot Time (min) 90 Test Method Mix Ratio 1:1 (by volume), 100:94 (by weight) Bond Strength
Compressive Strength (psi) 2,200, 290, 200, 190 Test Method Material Resistance
Impact Resistance Impact resistance Hardness
Shore D Hardness 55 (psi) Test Method Modulus (psi) 62,000 Test Method Other Properties
Glass Transition Temp (Tg) (°C) 54 Test Method % Solids (%) 100 Density (g/cm³) 29.3 - 31.2 (lbs./ft.3) Test Method Business Information
Shelf Life Details Storage Stability – Store product at 80°F (27°C) or below. Rotate stock on first in - first out basis.;Standard shelf life for 3M™ Scotch-Weld™ Void Filling and Edge Sealing Compound EC-3524 B/A and Off-White B/A is 6 months from date of shipment when stored @ 80°F (27°C) or below. Shelf Life Temperature (°F) <80 Shelf Life Type From date of shipment Shelf Life (mon) 6 -
Best Practices for 3M 3524
-
Surface Preparation
A clean dry grease free surface is essential for maximum performance.
When using solvents for cleanup, follow the manufacturer’s precautions and directions for use for handling such materials.
-
Application
Scotch-Weld EC-3524 B/A compound may be applied by spatula or trowel. Apply by working the material in place to reduce internal voids, and allow to set for two hours before finishing the surface. Large masses of material should be avoided until user performs suitable tests to determine the possibility of an exothermic reaction.
Scotch-Weld EC-3524 B/A compound will stick to rubber gloves. Cover rubber gloves with lint free cotton gloves for best handling.
-
Mixing
3M™ Scotch-Weld™ Void Filling and Edge Sealing Compound EC-3524 B/A or Off-White B/A may be mixed by hand or machine until a uniform color is obtained. Do not mix any more than can be used within the work life of the material. Work life of 200g of Scotch-Weld EC-3524 B/A is approximately 1.5 hours. Work life of larger quantities will be shorter. For industrial mixing applications, use a mixer that will not crush the glass microspheres contained in the compound.
-
-
Comparable Materials for 3M 3524
Spec Engine® Results
Closest Results from this Manufacturer
Popular Articles
Infographic: ENSURING A STRONG BOND - 6 Basic Methods of Surface Preparation
Read ArticleTesting the effectiveness of surface treatments
Read ArticleSilicones in LED Lighting | Gluespec
Read ArticleLearn how to bond and protect at the same time with this adhesive sealants Q&A primer
Read ArticleSponsored Articles
Unique Advantages of Contact Adhesives
Read ArticleUsing LOCTITE® 454™ is a Valid Option for Engineers Working with a Wide Variety of Materials
Read ArticleSylgard 184 by DOW is the Top Choice for a Transparent, Silicone Encapsulant. Read Why:
Read ArticleCase Study: Creating reliable, corrosion-free bonds with LORD® 406 acrylic adhesive
Read ArticleFeatured Ads

Work / Pot Time Test Methods
Work / Pot Time | Test Method |
---|---|
90 min | approximately 200g |
Compressive Strength Test Methods
Compressive Strength | Cure Time | Cure Temperature | Test Temperature | Test Method |
---|---|---|---|---|
2,200 psi | 2,880 min | 24°C | 24°C | 100 grams of 3M™ Scotch-Weld™ Void Filling and Edge Sealing Compound EC-3524 Part B and 94 grams of Part A were hand (spatula) mixed for 2-3 minutes_x00D_ then cast into a block 2 in. x 3 in. x 6 in. and cured 48 hours at ambient laboratory conditions. The following typical data were obtained on specimens cut from the cured block |
290 psi | 2,880 min | 24°C | 121°C | 100 grams of 3M™ Scotch-Weld™ Void Filling and Edge Sealing Compound EC-3524 Part B and 94 grams of Part A were hand (spatula) mixed for 2-3 minutes then cast into a block 2 in. x 3 in. x 6 in. and cured 48 hours at ambient laboratory conditions. The following typical data were obtained on specimens cut from the cured block |
200 psi | 2,880 min | 24°C | 149°C | 100 grams of 3M™ Scotch-Weld™ Void Filling and Edge Sealing Compound EC-3524 Part B and 94 grams of Part A were hand (spatula) mixed for 2-3 minutes then cast into a block 2 in. x 3 in. x 6 in. and cured 48 hours at ambient laboratory conditions. The following typical data were obtained on specimens cut from the cured block |
190 psi | 2,880 min | 24°C | 177°C | 100 grams of 3M™ Scotch-Weld™ Void Filling and Edge Sealing Compound EC-3524 Part B and 94 grams of Part A were hand (spatula) mixed for 2-3 minutes then cast into a block 2 in. x 3 in. x 6 in. and cured 48 hours at ambient laboratory conditions. The following typical data were obtained on specimens cut from the cured block |
Modulus Test Methods
Modulus | Test Method |
---|---|
62,000 psi | at 75°F (24°C) |
Shore D Hardness Test Methods
Shore D Hardness | Shore Hardness Test Method |
---|---|
55 (psi) | at 75°F (24°C) |
Density Test Methods
Density | Test Method |
---|---|
29.3 - 31.2 (lbs./ft.3) | 100 grams of 3M™ Scotch-Weld™ Void Filling and Edge Sealing Compound EC-3524 Part B and 94 grams of Part A were hand (spatula) mixed for 2-3 minutes_x00D_ then cast into a block 2 in. x 3 in. x 6 in. and cured 48 hours at ambient laboratory conditions. The following typical data were obtained on specimens cut from the_x00D_ cured block. |
Glass Transition Temp (Tg) Test Methods
Glass Transition Temp (Tg) | Glass Transition Temperature (Tg) Test Method |
---|---|
54°C | 100 grams of 3M™ Scotch-Weld™ Void Filling and Edge Sealing Compound EC-3524 Part B and 94 grams of Part A were hand (spatula) mixed for 2-3 minutes_x00D_ then cast into a block 2 in. x 3 in. x 6 in. and cured 48 hours at ambient laboratory conditions. The following typical data were obtained on specimens cut from the_x00D_ cured block. |