Item Name: INSULCAST 502
Manufacturer: ITW Performance Polymers
Technologies: Unfilled epoxy resin with low viscosity
Color: Clear (Resin), Amber (Hardeners INSULCURE 9 & 11B)
Cure Type: Room temperature or elevated post-cure depending on mass and hardener
Package Size: Contact to Techniq VN for details.
Shelf Life: 12 months
INSULCAST 502 is a clear, low-viscosity, unfilled epoxy designed for general-purpose casting and impregnation. It offers excellent electrical insulation and physical performance. The product is formulated to be mixed with either INSULCURE 9 or INSULCURE 11B curing agents, allowing for flexible pot life and cure schedules suitable for different casting sizes. It exhibits strong thermal and mechanical properties once cured, making it ideal for high-performance applications requiring durability and electrical insulation.
General-purpose casting
Electrical insulation and encapsulation
Impregnation of coils or transformers
Void-free moldings and structural bonding
Components requiring high thermal and dielectric performance
| Property | INSULCAST 502 | INSULCURE 9 | INSULCURE 11B | Test Method |
|---|---|---|---|---|
| Color, Visual | Clear | Amber | Amber | – |
| Viscosity @ 25°C, cP | 700 | 55 | 200 | ASTM D 2392 |
| Specific Gravity | 1.13 | 0.97 | 0.95 | – |
| Mix Ratio (by weight) | – | 13 | 18 | – |
| Mixed Viscosity @ 25°C, cP | – | 200 | 300 | ASTM D 2393 |
| Pot Life @ 25°C, 100g | – | 45 min | 5 hrs | – |
| Shelf Life @ 25°C, months | 12 | 12 | 12 | – |
Cured Properties (with respective curing agents)
| Property | INSULCURE 9 | INSULCURE 11B | Test Method |
|---|---|---|---|
| Hardness, Shore D | 85 | 87 | ASTM D 2240 |
| Tensile Strength, psi / MPa | 10,700 / 74 | 11,000 / 76 | ASTM D 638 |
| Tensile Elongation, % | 5.4 | 5.0 | ASTM D 638 |
| Compressive Strength, psi / MPa | 14,000 / 97 | 15,600 / 108 | ASTM D 695 |
| Flexural Strength, psi / MPa | 17,500 / 121 | 18,000 / 124 | ASTM D 790 |
| Coefficient of Thermal Expansion, °C | 75×10⁻⁶ | 75×10⁻⁶ | – |
| Thermal Conductivity, BTU-in/(ft²)(hr)(°F) | 1.6 | 1.6 | – |
| Heat Distortion Point, °C | 85 | 155 | – |
| Service Temperature, °C | -40 to +105 | -55 to +155 | – |
| Dielectric Strength, volts/mil | 425 | 435 | ASTM D 149 |
| Dielectric Constant, 1 KHz | 4.0 | 4.0 | ASTM D 150 |
| Dissipation Factor, 1 KHz | 0.023 | 0.023 | ASTM D 150 |
| Volume Resistivity, ohm-cm | 2×10¹⁵ | 2×10¹⁵ | ASTM D 257 |
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