Applications

Araldite® CW 1302 and Aradur® HY 1300

Technology: A high-performance encapsulating epoxy system designed for filled casting applications that cures at room temperature.
Product code: Huntsman Araldite® CW 1302 / Aradur® HY 1300
Manufacturer: Huntsman
Size: Supplied in bulk packaging (e.g., drums and pails).
Shelf life: 1 year.

1. Product Overview

Araldite® CW 1302 and Aradur® HY 1300 form an optimally filled casting system designed for processing and curing at room temperature or slightly higher temperatures. This system is particularly suitable for applications requiring good thermal conductivity, low water absorption, excellent thermal endurance, and compliance with flammability and railway safety standards.

2. Applications

  • Transformers, filters, and capacitors
  • Electrical devices operating in potentially explosive environments
  • Vacuum casting and general casting applications

3. Typical Properties

Property Standard Unit Araldite CW 1302 Araldite CW 1302 Blue Aradur HY 1300
Viscosity at 25°C ISO 3219 / 2555 Pa*s 20.0 – 27.0 25 – 65 150 – 190
Specific Gravity at 25°C ISO 2811 g/cm³ 1.76 1.76 0.990 – 1.005
Appearance Visual Beige-grey, viscous liquid Blue, viscous liquid Clear, yellowish liquid

4. Typical Properties After Mixing

Property Standard Unit Value
Mix Ratio (by weight) 100:11
Mix Ratio (by volume) 100:19
Mix Viscosity at 40°C Rheomat mPa*s 3500
Gel Time at 25°C Gelnorm min 80
Gel Time at 40°C ISO 9396 min 50 – 75
Gel Time at 60°C ISO 9396 min 25 – 35
Pot Life at 40°C Rheomat min 37
Standard Cure Cycle 24h at RT + 6h at 60°C
Minimum Curing Cycle 48h at 25°C
Glass Transition Temperature ISO 6721 °C 75
Tensile Modulus ISO 527 MPa 7700
Tensile Strength ISO 527 MPa 35
Elongation at Break ISO 527 % 0.7
Flexural Modulus ISO 178 MPa 8500
Flexural Strength ISO 178 MPa 65
Thermal Conductivity ISO 8894-1 W/mK 0.88
Hardness DIN 53505 Shore D 88
Flammability UL 94 V-0 (3.0 mm) / HB (1.5 mm)
Dielectric Strength (2 mm) IEC 60243-1 kV/mm 27
Volume Resistivity IEC 60093 Ω cm 10¹⁴
Water Absorption (1 day at 23°C) ISO 62 % by wt. 0.04
Water Absorption (30 min at 100°C) ISO 62 % by wt. 0.22

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