Weld-On® 31 Structural Acrylic Adhesive
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Regular price
$105.00 CAD
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Description
Weld-On® 31 is a medium-speed, two-part structural acrylic adhesive designed for reliable bonding of metals, plastics, and composites. With a 13–17 minute working time and 30–40 minute fixture time, it offers more flexibility than fast-curing adhesives like Weld-On 30 — making it ideal for larger sign and display assemblies.
Once cured, Weld-On 31 provides exceptional durability against impact, fatigue, corrosion, and chemicals, maintaining bond integrity even in extreme temperatures from -40°F to 180°F (-40°C to 82°C).
Key Features & Benefits
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Medium-Speed Cure – Longer working time for larger assemblies.
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High Strength Bonds – Up to 2,400–2,800 psi lap shear on metals.
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Primerless Metal Bonding – Bonds aluminum, CRS, stainless steel, and coated metals.
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Excellent Adhesion to Plastics – PVC, ABS, acrylic (PMMA), polycarbonate.
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Composite Compatibility – Strong bonds with epoxy, polyester, and vinyl ester laminates.
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Gap-Filling Capabilities – Ideal for uneven surfaces.
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Non-Sag Formula – Suitable for vertical and overhead bonding.
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UL 746C Approved – Certified for indoor and outdoor electrical signage.
Common Applications
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Sign and display fabrication requiring medium open time
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Electrical signage assemblies (UL 746C certified)
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Bonding unprepared metals, coated metals, and composites
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Industrial manufacturing where durability and workability are critical
Technical Specifications
| Property | Value |
|---|---|
| Color | Off White |
| Mix Ratio | 10:1 |
| Working Time | 13–17 minutes |
| Fixture Time | 30–40 minutes |
| Ultimate Bond Strength | 24 hours |
| Lap Shear Strength (Aluminum) | 2,400 psi (16.5 MPa) |
| Lap Shear Strength (Cold Rolled Steel) | 2,550 psi (17.6 MPa) |
| Lap Shear Strength (Stainless Steel) | 2,150 psi (14.8 MPa) |
| Lap Shear Strength (Carbon Fiber – Epoxy) | 2,800 psi (19.3 MPa) |
| Service Temperature | -40°F to 180°F (-40°C to 82°C) |
| Shelf Life | 6 months |
Packaging & Ordering Info
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Cartridge Size: 490ml
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Case Quantity: 12
Dispensing guns and mixing tips sold separately.
Call to Action
For sign and display projects that require more working time without compromising strength, Weld-On® 31 is the adhesive of choice.