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Key Differences
| Product Type |
|
|
| Mixed Viscosity | 23,000 cps | 6,000 cps |
| Pot Life | 3.5 hours | 50 minutes |
| Cure Time | 24 hours | 16 hours |
| Shore D Hardness | 90 | — |
| Shore A Hardness | — | 20 |
| Color | Grey | Black |
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 Hardener | FMC™ 200 | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 23,000 cps | 6,000 cps |
| Mix Ratio By Weight | 100A:12B | 100A:12B |
| Pot Life | 3.5 hours | 50 minutes |
| Cure Time | 24 hours | 16 hours |
| Shore D Hardness | 90 | — |
| Shore A Hardness | — | 20 |
| Specific Gravity | 1.66 g/cc | 1.35 g/cc |
| Specific Volume | 16.7 cu. in./lb. | 20.5 cu. in./lb. |
| Color | Grey | Black |
| Tensile Strength | — | 157 psi |
| Tensile Modulus | 2,040,000 psi | — |
| Ultimate Tensile | 4,810 psi | — |
| Tensile Elongation | 0.54 % | — |
| Elongation @ Break | — | 700 % |
| 100% Modulus | — | 29 psi |
| Compressive Strength | 12,500 psi | — |
| Compressive Modulus | 125,500 psi | — |
| Flexural Strength | 7,660 psi | — |
| Flexural Modulus | 1,403,000 psi | — |
| Shrinkage | 0.0006 in. / in. | negligible in. / in. |
| Heat Deflection Temp | 135 °F | — |
| Thermal Conductivity | 0.675 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.
FMC™ 200
FMC™-200 is a polysulfide rubber mold compound with high tear strength that cures overnight with negligible shrinkage. Molds made of FMC™-200 are very durable and will perform in production. The mix ratio is 100 parts of Part A to 12 parts of Part B by weight. FMC™-200 cures to a Shore hardness of 20 A.
FMC™-200 is ideal for those applications that require capturing intricate detail from a variety of model surfaces. Unlike polyurethanes, FMC™-200 is not sensitive to moisture and can be poured directly over wet plaster or water/sulfur based clays. Common applications include molds for foundry and pattern work, sculpture (lost wax process), casting various gypsum products and waxes.