Loctite 3421/50ml – Structural Bonding 2k Epoxy
Loctite EA 3421 structural bonding – 2K Epoxy, general purpose, long open time.
Loctite EA 3421 is a two component epoxy adhesive which cures slowly at room temperature after mixing. It is a general purpose, flowable adhesive which develops high strength and has excellent moisture resistance. The long working life and medium viscosity make this adhesive system suitable for large surfaces and where adjustment time is needed after assembly.
Chemical Type: Epoxy
Appearance (Resin): White to off-white paste
Appearance (Hardener): Amber, Clear liquid
Appearance (Mixture): Clear amber-yellow
Components: Two part – Resin & Hardener
Mix Ratio, by volume – Resin : Hardener: 1 : 1
Mix Ratio, by weight – Resin : Hardener: 100 : 90
Cure: Room temperature cure after mixing
Specific Benefit: Excellent on surfaces made from metal, ceramic, wood, glass or rigid plastics
Typical Properties of Uncured Material
Specific Gravity @ 25°C: 1.12 to 1.18
Viscosity, Brookfield – RVT, 25°C, mPa·s (cP):
–Spindle 6, speed 2.5 rpm: 30,000 to 90,000
–Spindle 6, speed 5 rpm: 60,000 to 100,000
Typical Performance of Cured Material
Cured for 7 days @ 22°C
Lap Shear Strength , ISO 4587:
Steel (grit blasted): N/mm² 20 to 25 (psi) (2,900 to 3,600)
Stainless steel (grit blasted) N/mm² 9 to 12 (psi) (1,300 to 1,740)
Zinc dichromate: N/mm² 7 to 12 (psi) (1,000 to 1,700)
Aluminum (abraded): N/mm² 8 to 12 (psi) (1,200 to 1,700)
Aluminum (etched): N/mm² 12 to 16 (psi) (1,700 to 2,300)
Galvanized Steel (HD): N/mm² 9.4 (psi) (1,400)
Brass: N/mm² 8 to 11 (psi) (1,200 to 1,600)
Glass-reinforced plastic (GRP): N/mm² 0.5 to 2 (psi) (70 to 290)
Phenolic: N/mm² 2.5 to 4.5 (psi) (360 to 650)
ABS: N/mm² 0.5 to 1 (psi) (70 to 150)
Hardwood (Mahogany): N/mm² 6 to 15 (psi) (870 to 2,200)
Softwood (Red Deal): N/mm² 8 to 10 (psi) (1,200 to 1,500)
Polycarbonate: N/mm² 2.5 to 4 (psi) (360 to 580)
Tensile Strength , ISO 6922:
Mild steel pin (grit blasted) to Soda glass: N/mm² 13 to 18 (psi) (1,900 to 2,600)
180° Peel Strength, ISO 8510-2:
Steel (grit blasted): N/mm 2 to 3 (lb/in) (11 to 17)
Please store this product in the unopened container in a dry location.
Further storage information may be indicated on the product container labeling.
Optimal Storage: 8°C to 21°C. Storage below 8°C or greater than 28°C can adversely affect product properties.
This product is not recommended for use in pure oxygen and/or oxygen rich systems and should not be selected as a sealant for chlorine or other strong oxidizing materials.
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£9.32Each (exc VAT)