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EpoxAcast™ 655 + 103 Hardener

PMC™-724 vs. EpoxAcast™ 655 + 103 Hardener

Aluminum Filled Casting Epoxy Resin

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PMC™-724

PMC™-724 vs. EpoxAcast™ 655 + 103 HardenerEpoxAcast™ 655 + 103 Hardener

Polyurethane Rubber Compound

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Key Differences

Product Type
  • Epoxy Casting and Laminating Resins
  • Urethane Rubber
Mixed Viscosity23,000 cps4,000 cps
Pot Life3.5 hours20 minutes
Cure Time24 hours16 hours
Shore D Hardness90
Shore A Hardness40
ColorGreyOff-White
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 HardenerPMC™-724
Product Type
  • Epoxy Casting and Laminating Resins
  • Urethane Rubber
Mixed Viscosity23,000 cps4,000 cps
Mix Ratio By Weight100A:12B10A:100B
Pot Life3.5 hours20 minutes
Cure Time24 hours16 hours
Shore D Hardness90
Shore A Hardness40
Specific Gravity1.66 g/cc1.38 g/cc
Specific Volume16.7 cu. in./lb.20.1 cu. in./lb.
ColorGreyOff-White
Die C Tear Strength90 pli
Tensile Strength600 psi
Tensile Modulus2,040,000 psi
Ultimate Tensile4,810 psi
Tensile Elongation0.54 %
Elongation @ Break>700 %
100% Modulus80 psi
Compressive Strength12,500 psi
Compressive Modulus125,500 psi
Flexural Strength7,660 psi
Flexural Modulus1,403,000 psi
Shrinkage0.0006 in. / in.<.001 in. / in.
Heat Deflection Temp135 °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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PMC™-724

Used by artists and industry the world over for a variety of design, casting and special effects applications, PMC™-724 is by far the most versatile urethane rubber compound available on the market today. It is inexpensive, mixes and pours easily, and will cure to a durable rubber with negligible shrinkage. Low viscosity ensures flawless pick-up of even the finest detail with minimal bubble entrapment.

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