Applications

Insulcast 3316 HFR-S

Insulcast 3316 HFR-S

Brand: Insulcast

Package Sizes:

Shelf Life: 12 months

Product Description: Insulcast 3316 HFR-S is a fast-setting, low-viscosity, flame-retardant (UL 94 V-0) epoxy system designed for casting applications. When cured with Insulcure 383 Blue, it achieves room temperature cures in approximately 12 hours. This system offers a combination of excellent thermal conductivity, high peel strength, good thermal shock resistance, and cures to a smooth, glossy surface. Additionally, Insulcast 3316 HFR-S can function as an adhesive, setting in thin films in about 2 hours.

Key Features:

  • Fast Setting: Cures rapidly, especially when used as an adhesive.
  • Low Viscosity: Ensures easy casting and impregnation.
  • Flame Retardant: Meets UL 94 V-0 standards for fire resistance.
  • Excellent Thermal Conductivity: Efficient heat dissipation.
  • High Peel Strength: Provides strong adhesion.
  • Thermal Shock Resistance: Withstands rapid temperature changes.
  • Smooth, Glossy Surface: Aesthetic finish upon curing.

Recommended Applications:

  • Casting Applications: Ideal for creating molds and encapsulating components.
  • Adhesive Applications: Suitable for bonding materials where quick setting is advantageous.
  • Electronics Potting: Protects electronic components from environmental factors.
  • Thermal Management: Useful in applications requiring efficient heat dissipation.

Uncured Properties

Property Insulcast 3316 HFR-S Insulcure 383 Blue Test Standard
Color Blue Blue
Viscosity (cP) 3,000 200 ASTM D2393
Specific Gravity 1.55 0.98
Mix Ratio (by Weight) 100:20
Mixed Viscosity (cP) 2,500 ASTM D2393
Pot Life (100g mass) 30 minutes

Cured Properties

Property Value Test Standard
Hardness (Shore D) 85 ASTM D2240
Tensile Strength (psi) 10,000 ASTM D638
Tensile Elongation (%) 3.5 ASTM D638
Flexural Strength (psi) 15,000 ASTM D790
Compressive Strength (psi) 12,000 ASTM D695
Thermal Conductivity (BTU-in/(ft²·hr·°F)) 4.5
Coefficient of Thermal Expansion (°C⁻¹) 45 × 10⁻⁶
Flammability Rating UL 94 V-0
Heat Distortion Temperature (°C) 90
Service Temperature Range (°C) -40 to 130

Electrical Properties

Property Value Test Standard
Dielectric Strength (V/mil) 400 ASTM D149
Dielectric Constant (1 kHz) 4.2 ASTM D150
Dissipation Factor (1 kHz) 0.02 ASTM D150
Volume Resistivity (ohm-cm) 1 × 10¹⁴ ASTM D257

Cure Schedule:

  • Room Temperature Cure: 12 hours at 25°C (77°F) when using Insulcure 383 Blue.
  • Elevated Temperature Cure: 2 hours at 50°C (122°F) can accelerate the curing process.

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