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Epoxy

EpoxAcast™ 655 + 103 Hardener

EpoxAcast™ 655 + 103 Hardener is listed by Smooth-On as an epoxy resin system. The source reports mixed viscosity of 23,000 cps, mix ratio by weight of 100A:12B, pot life of 3.5 hours. This record connects 18 reported fields with 3 manufacturer document links. Review the original technical data sheet for the applicable test conditions and processing instructions.

Technical data sheet Safety data sheet
23,000 cpsManufacturer-reported
100A:12BManufacturer-reported
3.5 hoursManufacturer-reported
24 hoursManufacturer-reported
90Manufacturer-reported
1.66 g/ccManufacturer-reported

Technical & safety documents

3 links
Files open on the manufacturer's document host. Region and language follow the source listing; confirm the revision inside the file.
Open original PDF
TDS
Technical BulletinEnglish · Not specified
Open file
SDS
EpoxAcast 655 (Part A) SDS | EnglishEnglish · United States & Canada
Open file
SDS
103 Hardener (Part B) SDS | EnglishEnglish · United States & Canada
Open file

Reported specifications

18 fields
Material and processing data
PropertyReported valueEvidence
Mixed Viscosity23,000 cpsManufacturer table
ColorGreyManufacturer table
Mix Ratio By Weight100A:12BManufacturer table
Pot Life3.5 hoursManufacturer table
Cure Time24 hoursManufacturer table
Shore D Hardness90Manufacturer table
Specific Gravity1.66 g/ccManufacturer table
Specific Volume16.7 cu. in./lb.Manufacturer table
Compressive Strength12,500 psiManufacturer table
Flexural Modulus1,403,000 psiManufacturer table
Flexural Strength7,660 psiManufacturer table
Heat Deflection Temp135 °FManufacturer table
Shrinkage0.0006 in./in.Manufacturer table
Tensile Modulus2,040,000 psiManufacturer table
Thermal Conductivity0.675 W/M*KManufacturer table
Ultimate Tensile4,810 psiManufacturer table
Tensile Elongation0.54 %Manufacturer table
Compressive Modulus125,500 psiManufacturer table
Reported values are not independent test results. Original units and table wording are preserved. Extracted TDS rows can depend on the grade, component and source table headings; use the linked page to verify that context. Test methods, sample preparation and cure schedules may differ; consult the original TDS before making a performance comparison.

Selection & processing checks

Compare the complete resin–hardener system. A different hardener or cure schedule can change the cured properties.

  • Is the stated ratio by weight or by volume?
  • Do the thermal and mechanical values use the same cure schedule?
  • Is the formulation designed for casting, bonding or encapsulation?
  • Confirm the complete product designation, including any hardener, color or formulation suffix.
  • Read the current SDS for handling, protective equipment, storage and disposal information.

The reported weight ratio for this record is 100A:12B. A weight ratio must not be used as a volume ratio without the appropriate density information.

Missing properties are not estimated. Similar values or shared application labels do not establish a drop-in replacement.

Other materials in this family

View collection
Material / manufacturerFamilyKey specificationDocumentsAdd to comparison
EPO-TEK® B9021Epoxy TechnologyEpoxy4,000 - 8,000 | cPsViscosity (23°C) @ 50 rpm2 linked
EPO-TEK® 343ND-LHEpoxy TechnologyEpoxy2,580 cPsViscosity (23°C) @ 100 rpm3 linked
EPO-TEK® B9101-2 UnfilledEpoxy TechnologyEpoxy1,000 - 1,300 cPsViscosity (23°C) @ 100 rpm2 linked
EPO-TEK® B9126-8Epoxy TechnologyEpoxy11,000-18,500 | cPsViscosity (23°C) @ 20 rpm2 linked
Related records are browsing suggestions, not validated substitutes.