EPOCAST® 1638-1 A/B

EPOCAST® 1638-1 A/B epoxy syntactic adhesive is a low-density compound designed for potting fasteners in honeycomb structures. EPOCAST® 1638-1 A/B epoxy syntactic meets FAR 25.853 60-second vertical ignition requirements. EPOCAST® 1638-1 A/B is easily extruded through a 1/8 in (3 mm) nozzle orifice, but is non-flowing after application. EPOCAST® 1638-1 A/B epoxy syntactic adhesive sets quickly at room temperature. It does not contain halogenated fire retardant additives nor antimony trioxide.

RTU Product Type: 2K (2 component) Adhesive, Epoxy Adhesive, Syntactic Adhesive, Void Filler

Application Area: Honeycomb Structures, Potting Fasteners

Features: Fast Setting, Flame Retardant, Low Density, Room Temperature Curing

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Enhanced TDS

Identification & Functionality

Features & Benefits

Applications & Uses

Application Area
Mixing Ratio
  • To 100 parts by weight of EPOCAST® 1638-1 A, add 13 parts by weight of EPOCAST® 1638-1 B Hardener. Mix both components thoroughly for 2-3 minutes to ensure complete blending.

Properties

Physical Form

Regulatory & Compliance

Quality Standards

Technical Details & Test Data

Mix Ratio Data

To 100 parts by weight of Epocast® 1638-1 A Resin, add 13 parts by weight of Epocast® 1638-1 B Hardener. Mix both components thoroughly for 2-3 minutes to ensure complete blending.

Typical Cured Properties

Cure Schedule

24 hours at room temperature. The cure may be accelerated with heat for 3 hours at 122°F (50°C) after room temperature gelation.

Typical Cure Properties

Property Value   Test Method Condition
Compressive Strength 7.5 ksi ASTM D695

at 75°F (23°C),after Cure 8 hours,test temperature:77°F (25°C)

Compressive Strength 7.7 ksi ASTM D695 at 75°F (23°C),14 hours,test temperature:77°F (25°C)
Compressive Strength 8.5 ksi ASTM D695 at 75°F (23°C),24 hours,test temperature:77°F (25°C)
Compressive Strength 8.8 ksi ASTM D695 at 75°F (23°C),7 days ,test temperature:77°F (25°C)
Compressive Strength 8.5 ksi ASTM D695 at 122°F (50°C),1 hour,test temperature:77°F (25°C)
Compressive Strength 8.6 ksi ASTM D695 at 122°F (50°C),3 hours,test temperature:77°F (25°C)
Compressive Strength 0.8 ksi ASTM D695 at 122°F (50°C),3 hours,test temperature:180°F (82°C)
Compressive Strength 0.6 ksi ASTM D695

at 122°F (50°C),3 hours,test temperature:250°F (121°C)

Compressive Strength 0.4 ksi ASTM D695

at 122°F (50°C),3 hours,test temperature:350°F (177°C)

Tensile Lap Shear 6.9 psi ASTM D1002 at 77°F (25°C), Chromic acid etched Al-Al
Weight Change on Immersion 1 % ASTM D543 at 77°F (25°C), After 24 hrs, Distilled water
Weight Change on Immersion 0.8 % ASTM D543

at 77°F (25°C), After 24 hrs, Mil-PRF-5606 hydraulic fluid

Weight Change on Immersion 0.3 % ASTM D543 at 77°F (25°C), After 24 hrs, TT-S-735 Type III
Weight Change on Immersion 1.8 % ASTM D543 at 77°F (25°C), After 24 hrs, Skydrol LD-4
Flammability 1 sec FAR 25.853a Self-extinguish time, 60 sec ignition, vertical
Flammability 2 cm FAR 25.853a Burn length, 60 sec ignition, vertical
Flammability 1 sec FAR 25.853a Drip self-extinguishing time, 60 sec ignition, vertical

Packaging & Availability

Regional Availability
  • Americas
  • Asia Pacific
  • EIMEA

Storage & Handling

Storage Conditions

When stored in a dry place in their original sealed containers at a temperature within 36°F to 104°F (+2°C and +40°C) both components of EPOCAST® 1638-1 A/B have a 6 months shelf-life from date of shipment (expiration date may differ based on customer specification). EPOCAST® 1638-1 A/B should not be exposed to direct sunlight. The temperature of both components should be above 18°C (65°F) prior to mixing. After use, tightly reseal containers.

Storage Information
  • When stored in a dry place in their original sealed containers at a temperature within 36°F to 104°F (+2°C and +40°C) both components of Epocast® 1638-1 A/B have a 6 months shelf-life from date of shipment (expiration date may differ based on customer specification).
  • Epocast® 1638-1 A/B should not be exposed to direct sunlight.
  • The temperature of both components should be above 18°C (65°F) prior to mixing.
  • After use, tightly reseal containers.

Other

Physical Properties
ValueUnitsTest Method / Conditions
Density0.7 g/cm³g/cm³ASTM D1622
Gel Time12.0-25.0 mmASTM D2471 at 25°C, 50g