Product Introduction
3M™ Scotch-Weld™ Epoxy Adhesive EC-3501 B/A (3M™ CA50) is a two-part epoxy engineered for fast curing at room temperature, creating a tough and durable bond. Its thixotropic (thick) consistency provides controlled, non-sag flow, making it ideal for filling pinholes and surface imperfections in composite materials prior to painting. This versatile adhesive, which has a 1:1 mix ratio, is also effective on metals and many plastics. It offers a 5-10 minute work life, reaches handling strength in 90-120 minutes, and achieves a full cure in 8 hours at 75°F (24°C).
3M™ CA50 Features:
- Two-part formula cures quickly at room temperature to form a strong, durable bond.
- Reaches handling strength in approximately 90-120 minutes.
- High shear strength makes it suitable for structural applications.
- Thick, thixotropic formula provides controlled flow for professional results and minimal waste.
- Specifically designed for filling pinholes in composites before painting.
- Bonds effectively to metals, composites, and many plastics.
- Features a simple 1:1 mix ratio for easy and accurate mixing.
3M™ CA50 Applications:
- Filling pinholes and surface defects in composite materials prior to painting.
- Bonding metals, composites, and various plastics in structural assemblies.
- General-purpose bonding tasks that require high shear strength.
- Applications that benefit from precise adhesive control and minimal waste.
- Manufacturing and repair operations that require a fast room-temperature cure.
- Ideal for use with the 3M™ EPX™ Applicator System for streamlined dispensing.
About Prostech
Prostech Philippines is a one-stop solution provider for specialty materials and equipment across electronics manufacturing, from PCBA to final assembly. Our core material and equipment solutions include:
- PCB Assembly Materials
- Cleaning & Degreaser
- Circuit Board Protection
- Thermal Management Solutions
- EMI Shielding
- General Assembly Adhesives
- Elastomeric Materials
- Process Equipment: Potting & Coating Systems, UV/ Heat Curing, Plasma Treatment, Tape placement automation, and cleaning machines
Technical Added Value to customer
Prostech offers customized material and process equipment solutions with engineering support throughout R&D, production process optimization, and performance validation. Our in-house lab located in Alabang, Muntinlupa is equipped to conduct electronics material testing, application simulation, and adhesive validation, helping customers reduce the need for onsite trials and accelerate implementation.
International Supply Chain Advantage
Regional warehouse hubs across Vietnam, Singapore, Malaysia, and the Philippines ensure cross-border reliable supply. In Philippines PEZA-bonded warehouse located at Lima Industrial Park, Batangas enables Prostech to provide responsive, demand-based delivery and significantly shortens standard lead time for Philippines customers.
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| Property | Value |
|---|---|
| Adhesive Type | Instant Adhesive |
| Brands | Scotch-Weld™ |
| Container Size (Imperial) | 0.7 Ounce |
| Container Size (Metric) | 20 g |
| For Use On | Rigid Foam (Urethane), Rigid Foam (Beadboard Styrene), Plastic (Polyolefins and Thermoplastic Elastomers), Plastic (High Performance Nylon), Fabric, Felt, Cork & Fibrous Glass, Flexible Foam (Latex, Urethane), Plastic (Flexible Vinyl), Plastic (ABS, PVC, Acrylic), Metal, Paper & Cardboard, Rubber (Except EPDM), EPDM Rubber |
| Full Cure Time | 24 Hours @ 72 F (22 C) |
| Indoor/Outdoor | Both |
| Industries | Transportation, Construction, Electronics, MRO, General Industrial, Metalworking, Consumer Goods, Medical, Military & Government, Specialty Vehicle |
| Maximum Operating Temperature (Celsius) | 82 ℃ |
| Maximum Operating Temperature (Fahrenheit) | 180 ℉ |
| Net Weight (Imperial) | 0.71 oz |
| Net Weight (Metric) | 20 g |
| Physical Form | Liquid |
| Product Color | Transparent |
| Product Form | Tube |
| Product Type | Instant Adhesive |
| Set Time | 60-120 Seconds |
| Shear Strength | 2000 psi |
| Smallest Saleable Unit | Each |
| Specific Gravity | 8.9 Pound Per Gallon (US) |
| Storage Temperature (Celsius) | 22℃ |
| Storage Temperature (Fahrenheit) | 72 Degree Fahrenheit |
| Units per Case | 12.0 |
| Viscosity | Non-sag |
| Viscosity Range (cps) at Room Temperature | 45,000-85,000 |
| Work Time | 60-120 Seconds |



