EPOCAST® 1656 A/B

EPOCAST® 1656-A/B epoxy syntactic is a low-density compound with good elevated temperature properties after a room-temperature cure. The epoxy syntactic is useful as a core fill for metal skins to add stiffness and strength to fabricated parts and is also suitable for core splicing and strengthening radii and corners of reinforced plastic structures. EPOCAST® epoxy syntactic meets requirements of GM-4006-1-2.
BrochureSafety Data SheetTechnical Data Sheet
  • TypeDocument Name
View All Documents

Enhanced TDS

Identification & Functionality

Chemical Family
Epoxy & Epoxy Derivatives
RTU Product Type
Syntactic Adhesive,
Void Filler

Features & Benefits

Ready-to-Use Product Features
High Temperature Performance,
Low Density,
Room Temperature Curing,
Stiffness

Applications & Uses

Markets
Automotive & Transportation
Applications
Automotive & Transportation — Transportation
Aerospace & Aviation
Mixing Ratio

To 100 parts by weight of EPOCAST® 1656-A resin, add 12 parts by weight of EPOCAST® 1656-B hardener. Mix both components thoroughly for several minutes to insure complete and uniform mixing.

Properties

Physical Form
Paste

Regulatory & Compliance

OEM Specifications
Grumman GM 4006, Type 1, Class B, FM 1,
Pratt & Whitney CPW 505,
Vought VM 4006, Type 1, Class D, FM 1, AM 2

Technical Details & Test Data

Cure Schedule

7 days at 77°F (25°C)or gel at 77°F (25°C) followed by 2-3 hours at 150°F (66°C).

Mix Ratio Data

To 100 parts by weight of Epocast® 1656-A resin, add 12 parts by weight of Epocast® 1656-B hardener. Mix both components thoroughly for several minutes to insure complete and uniform mixing.

Typical Cured Properties
Property Value Unit Test Method Condition
Tensile Lap Shear 700 psi ASTM D1002 at 77°F (25°C), etched Al/Al
Compressive Strength 9,500 psi ASTM D695 at -67°F (-55°C), 2% strain
Compressive Strength 8,000 psi ASTM D695 at 77°F (25°C)
Compressive Strength 3,000 psi ASTM D695 at 180°F (83°C)
Compressive Strength 550 psi ASTM D695 at 350°F (177°C)
Flatwise Tensile Strength 2,000 psi ASTM C-297 at 74°F (23°C)
Flatwise Tensile Strength 1,000 psi ASTM C-297 at 160°F (71°C)

Packaging & Availability

Country Availability
USA
Packaging Type
Bulk
Regional Availability
  • Americas
  • Asia Pacific
  • Australia
  • EIMEA

Storage & Handling

Storage Conditions
  • EPOCAST® 1656-A/B should be stored in a dry place, in the sealed original container, at temperatures between +2°C and +40°C (+35.6°F and 104°F). The product should not be exposed to direct sunlight. Under these storage conditions, and when supplied under Huntsman standard certification, EPOCAST® 1656-A/B has a shelf life of 6 months (expiration date may differ based on customer specification).
  • Material temperatures should be above 18°C (65°F) when mixing. After use, tightly reseal containers.
Storage Information
  • Epocast® 1656-A/B should be stored in a dry place, in the sealed original container, at temperatures between +2°C and +40°C (+35.6°F and 104°F).
  • The product should not be exposed to direct sunlight.
  • Under these storage conditions, this product has a shelf life of 6 months (expiration date may differ based on customer specification).
  • Material temperatures should be above 18°C (65°F) when mixing. After use, tightly reseal containers.

Other

Appearance
Light tan
Physical Properties
ValueUnitsTest Method / Conditions
Density0.8 g/cm³g/cm³ASTM D1622
Gel Time50.0-90.0 mmASTM D2471 at 25°C, 100g