Silicones, silicone oils, sprays
Casting and potting resins)
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Technical Data
Typical values, not a specification. The technical data sheet (TDS) is binding.
Product Information
- Manufacturer
- Permabond Engineering Adhesives Ltd
- Brand
- Permabond
- Container
- 50 ml, 400 ml
- Country of origin
- Italy
- Mixing Ratio
- 1:1
Physical Properties A
- Chemical Group (A)
- Epoxy resin
- Color (A)
- White
- Viscosity 20rpm (A)
- 50000-100000
- Viscosity 2rpm (A)
- 150000-300000
- Specific gravity (A)
- 1.1
- UFI Part A
- VEF0-Y0EM-600J-SA2S
Physical Properties B
- Chemical Group (B)
- Polyamine hardener
- Color (B)
- Dark grey
- Viscosity 20rpm (B)
- 20000-40000
- Viscosity 2rpm (B)
- 30000-90000
- Specific Gravity (B)
- 1.2
- UFI Part B
- WMF0-Y0TD-T00J-307W
Performance at Full Cure
- Peel resistance (aluminum) (ISO 4578)
- 60-80 N/25mm
- Dielectric strength
- 15-25 kV/mm
- Thermal conductivity
- 0.55 W/(mK)
Bonding Properties
- Functional Strength
- 24 hours
Physical Properties
- Color
- grau
- Viscosity (adhesives)
- Thick paste
Curing values
- Maximum gap fill (mm)
- 5
- Pot Life at 23°C
- 120-150 minutes
Mechanical properties
- Hardness (Shore D)
- 70-80
Thermal Properties
- Operating temperature (°C)
- -40 to +80
- Storage Temperature (°C)
- 5-25
Features
- TG Value
- +45-55°C
Product Description
Permabond ET538 is a high-strength 2K epoxy with an exceptionally long pot life — designed for large-area structural bonding and complex component assemblies where standard epoxies cure too quickly.
With a pot life of 120–150 minutes, ET538 is the longest-lasting 2K epoxy in the ET series — ideal for plant engineering, shipbuilding, wind turbine rotor blades and other large-area structural bonding applications that need to be processed over long distances.
Very long pot life of 120–150 minutes — the choice for large-area structural bonding, complex multi-component assembly, or high-volume production with long mixing cycles. High final strength of 25–30 N/mm² steel.
What distinguishes Permabond ET538
What is Permabond ET538 used for?
Processing
Recommended accessories
Important Notes
Which Permabond 2K epoxy for which application?
Permabond ET538 in direct comparison with related products of the ET series.
Permabond ET538 Current Product | Permabond ET514 → | Permabond ET536 → | Permabond ET540 → | |
|---|---|---|---|---|
| Application / Property | High-strength 2-component epoxy with a very long pot life (120–150 min) | Short pot life | Medium pot life, higher steel strength | 2:1 ratio with long pot life |
| Mixing ratio | 1:1 by volume | 1:1 | 1:1 | 2:1 |
| Pot life | 120–150 minutes @ 23 °C | 30–50 min | 50–80 min | 120–150 min |
| Steel shear strength | 25–30 N/mm² | 20–30 N/mm² | 22–32 N/mm² | 22–26 N/mm² |
| Carbon fiber | 20–24 N/mm² | 17–21 N/mm² | 18–22 N/mm² | — |
Frequently asked questions about Permabond ET 538
Practical application and design questions — answered by SILITECH.
High-strength 2-component epoxy with a very long pot life — 120–150 minutes for large-area structural bonding. The 2-component epoxy is mixed in a 1:1 volume ratio and offers a pot life of 120–150 minutes @ 23 °C.
Mix both components in a 1:1 ratio by volume — using a mixing nozzle for dual cartridges, weigh precisely for larger containers. Apply within the pot life (120–150 minutes @ 23 °C) and join components. Full curing typically occurs after — at room temperature.
The pot life of Permabond ET538 is typically 120–150 minutes at 23 °C. Higher temperatures shorten, lower temperatures lengthen the pot life. Mixing quantities above approximately 100 g may gel more quickly due to an exothermic reaction.
Permabond ET538 bonds reliably to: steel: 25–30 N/mm²; carbon fiber: 20–24 N/mm². For thermoplastic substrates, test compatibility before series production.
Permabond ET538 does not have specific industry-specific approvals such as EU 10/2011 (food), UL94 (fire protection), or Boeing/Airbus (aerospace). For general industrial applications, the product is approved according to Permabond standards.
Permabond ET538 is a high-strength, two-component epoxy with a very long pot life (120–150 min) — for complex, large parts (1:1 volume mix, 120–150 minutes @ 23 °C pot life). Permabond ET514 is standard (1:1, 30–50 min pot life) — short pot life.
From the Permabond 2K epoxy range, select according to application, mixing ratio, and strength requirements: Permabond ET538 (High-strength 2K epoxy with very long pot life (120–150 min)); Permabond ET514 (Standard); Permabond ET536 (High-strength medium); Permabond ET540 (High-strength 2:1). For aerospace applications, see ET515 (Aircraft Seat Trays); for food applications, see ET5162 (EU 10/2011 + FDA); for thermal conductivity/fire protection, see ET5441 (UL94-V0).