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EpoxAcast™ 655 + 103 Hardener

EpoxAcast™ 655 + 103 Hardener vs. Plasti-Paste™ EPOXY

Aluminum Filled Casting Epoxy Resin

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Key Differences

Mixed Viscosity23,000 cpsPaste
Mix Ratio By VolumeN/A (gram scale required)2A:1B
Pot Life3.5 hours40 minutes
Cure Time24 hours16 hours
Shore D Hardness9080
Specific Volume16.7 cu. in./lb.27.73 cu. in./lb.
ColorGreyOff-White
Tensile Modulus2,040,000 psi470,000 psi
Ultimate Tensile4,810 psi3,320 psi
Compressive Strength12,500 psi7,700 psi
Flexural Modulus1,403,000 psi2,273,000 psi
Shrinkage0.0006 in. / in.0.001 in. / in.
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 + 103 HardenerPlasti-Paste™ EPOXY
Product Type
  • Epoxy Casting and Laminating Resins
  • Epoxy Casting and Laminating Resins
Mixed Viscosity23,000 cpsPaste
Mix Ratio By Volume2A:1B
Mix Ratio By Weight100A:12B2A:1B
Pot Life3.5 hours40 minutes
Thin Film Recoat Time60 minutes
Cure Time24 hours16 hours
Shore D Hardness9080
Specific Gravity1.66 g/cc1.0 g/cc
Specific Volume16.7 cu. in./lb.27.73 cu. in./lb.
ColorGreyOff-White
Tensile Modulus2,040,000 psi470,000 psi
Ultimate Tensile4,810 psi3,320 psi
Tensile Elongation0.54 %
Elongation @ Break0.83 %
Compressive Strength12,500 psi7,700 psi
Compressive Modulus125,500 psi138,000 psi
Flexural Strength7,660 psi9,186 psi
Flexural Modulus1,403,000 psi2,273,000 psi
Shrinkage0.0006 in. / in.0.001 in. / in.
Heat Deflection Temp135 °F160 °F
Thermal Conductivity0.675 W/M*K

Product Description

EpoxAcast™ 655 + 103 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.

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Plasti-Paste™ EPOXY

Plasti-Paste™ EPOXY is an epoxy-based version of Smooth-On’s popular urethane Plasti-Paste™ products. It is a two component, fiber-filled epoxy designed for vertical surface application. Part A is a paste and Part B is a liquid. Mix ratio is 2A: 1B by volume or weight. Pot life is 40 minutes and cure time is 16 hours at room temperature depending on mass. Applying heat can reduce cure time. Mixed material holds a vertical surface without sagging and cures very rigid and strong.

Liquid material can be colored with UVO™ colorants and cured epoxy can be sanded, machined and painted with acrylic enamel paints. This plastic can used as a support shell or mother mold material to reinforce rubber molds during casting. It can also be used for creating themed environments, creating art or special effects. This epoxy is also a powerful adhesive and can be used as a repair material for a variety of industrial applications.

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