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EpoxAcast™ 655 + HT Hardener

FOAM-iT!™ 26 vs. EpoxAcast™ 655 + HT Hardener

Aluminum Filled Casting Epoxy Resin

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FOAM-iT!™ 26

FOAM-iT!™ 26 vs. EpoxAcast™ 655 + HT HardenerEpoxAcast™ 655 + HT Hardener

Rigid Urethane Expanding Foams

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Key Differences

Product Type
  • Epoxy Casting and Laminating Resins
  • Urethane Expanding Foams
Mixed Viscosity12,000 cps500 cps
Mix Ratio By VolumeN/A (gram scale required)1A:1B
Pot Life4 hours1.5 minutes
Shore D Hardness90
Specific Volume16.5 cu. in./lb.60 cu. in./lb.
ColorGreyWhite
Disclaimer
Although we do our best to ensure accuracy, Smooth-On offers no warranties, promises, and/or representations of any kind, either expressed or implied, as to the accuracy, completeness, or reliability of the information contained on this Compare Tool, nor suitability of the information contained herein to your particular circumstances. Smooth-On assumes no liability for losses or damages of whatever nature (direct, indirect, consequential or other) associated with your use, or inability to use, the Compare Tool, or from your use (or failure to use) the information contained herein. Other useful tools include product technical bulletins and our extensive FAQ section. You can also contact our technical support team.

All Technical Data

EpoxAcast™ 655 + HT HardenerFOAM-iT!™ 26
Product Type
  • Epoxy Casting and Laminating Resins
  • Urethane Expanding Foams
Mixed Viscosity12,000 cps500 cps
Mix Ratio By Volume1A:1B
Mix Ratio By Weight100A:8B100A:90B
Pot Life4 hours1.5 minutes
Tack Free Time20 minutes
Cure Time

Twenty Four Hours Followed By Post Cures

2 hours
Shore D Hardness90
Expansion (approximate)2 times
Foam Density26 lb/ft³
Specific Gravity1.64 g/cc0.42 g/cc
Specific Volume16.5 cu. in./lb.60 cu. in./lb.
ColorGreyWhite
Tensile Modulus7,200,000 psi
Ultimate Tensile6,000 psi
Tensile Elongation0.50 %
Compressive Strength15,700 psi
Compressive Modulus270,000 psi
Shrinkage0.001 in. / in.
Heat Deflection Temp225 °F
Thermal Conductivity0.675 W/M*K

Product Description

EpoxAcast™ 655 + HT Hardener

EpoxAcast™ 655 (formerly Metalset™ A-30) is a versatile aluminum filled castable epoxy resin that is very hard and strong. It is dimensionally stable, even when mass cast up to 512 in³ / 8,390 cm³. Maximum heat resistance is achieved using HT HIGH TEMP hardener (up to 225°F/108°C).

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FOAM-iT!™ 26

Smooth-On’s FOAM-iT!™ Series are two-component water blown rigid foams that are versatile and easy to use. FOAM-iT!™ products are available in 3lb., 4 lb., 5 lb., 8 lb., 10 lb.,15 lb. or 26 lb. per cubic foot densities. Parts A and B are measured and mixed in equal amounts by volume. The mixture is then poured into a mold or other form (apply release agent if necessary). The mixture will expand many times original volume (depending on which FOAM-iT!™ product you are using) and develop a uniform cell structure. FOAM-IT!™ 26 is tack-free in about 4 - 6.5 minutes, developing handling strength in 20 minutes and full cure in 2 hours. FOAM-iT!™ 26 can be cast in blocks as a machinable prototype modeling board.

All FOAM-iT!™ products can be used as a straight casting material, backfill material for hollow castings (adds structural strength) or as an encapsulation material, etc. They can be color pigmented with SO-Strong™, UVO™ or IGNITE™ colorants and are used for a variety of art/ craft, industrial design and special effects applications.

 Click here for more FOAM-iT!™ rigid foam products.

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