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Smooth-On / Material reference
Polyurethane

Smooth-Cast™ 61D

Smooth-Cast™ 61D is listed by Smooth-On as a polyurethane casting resin. The source reports mixed viscosity of 430 cps, mix ratio by weight of 100A:93B, pot life of 7 minutes. This record connects 12 reported fields with 14 manufacturer document links. Review the original technical data sheet for the applicable test conditions and processing instructions.

Technical data sheet Safety data sheet
430 cpsManufacturer-reported
100A:93BManufacturer-reported
7 minutesManufacturer-reported
60 minutesManufacturer-reported
61Manufacturer-reported
1.05 g/ccManufacturer-reported

Technical & safety documents

14 links
Files open on the manufacturer's document host. Region and language follow the source listing; confirm the revision inside the file.
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TDS
Technical BulletinEnglish · Not specified
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SDS
Smooth-Cast 61D SDS | EnglishEnglish · United States & Canada
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SDS
Smooth-Cast 61D SDS | FrenchFrench · United States & Canada
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SDS
Smooth-Cast 61D SDS | EnglishEnglish · United Kingdom & European Union
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SDS
Smooth-Cast 61D SDS | SpanishSpanish · United Kingdom & European Union
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SDS
Smooth-Cast 61D SDS | FrenchFrench · United Kingdom & European Union
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SDS
Smooth-Cast 61D SDS | GermanGerman · United Kingdom & European Union
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SDS
Smooth-Cast 61D SDS | ItalianItalian · United Kingdom & European Union
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SDS
Smooth-Cast 61D SDS | GreekGreek · United Kingdom & European Union
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SDS
Smooth-Cast 61D SDS | DutchDutch · United Kingdom & European Union
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SDS
Smooth-Cast 61D SDS | PolishPolish · United Kingdom & European Union
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SDS
Smooth-Cast 61D SDS | CzechCzech · United Kingdom & European Union
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SDS
Smooth-Cast 61D SDS | HungarianHungarian · United Kingdom & European Union
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SDS
Smooth-Cast 61D SDS | NorwegianNorwegian · United Kingdom & European Union
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Reported specifications

12 fields
Material and processing data
PropertyReported valueEvidence
Mixed Viscosity430 cpsManufacturer table
ColorTranslucent WhiteManufacturer table
Mix Ratio By Volume1A:1BManufacturer table
Mix Ratio By Weight100A:93BManufacturer table
Pot Life7 minutesManufacturer table
Cure Time60 minutesManufacturer table
Shore D Hardness61Manufacturer table
Specific Gravity1.05 g/ccManufacturer table
Specific Volume26.4 cu. in./lb.Manufacturer table
Elongation @ Break100 %Manufacturer table
Shrinkage0.012 in./in.Manufacturer table
Tensile Strength2,420 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

Distinguish rigid casting plastics, elastomeric rubbers and foams. Their density, hardness scales and processing requirements are not interchangeable.

  • Is this a solid material or an expanding foam?
  • Which hardness scale and cure conditions are reported?
  • What moisture-control and preparation steps does the manufacturer require?
  • 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:93B. 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
KX Flex™ 90Smooth-OnPolyurethane800 cpsMixed Viscosity15 linked
Smooth-Cast™ 45DSmooth-OnPolyurethane250 cpsMixed Viscosity15 linked
Smooth-Cast™ 57DSmooth-OnPolyurethane300 cpsMixed Viscosity14 linked
Smooth-Cast™ 60DSmooth-OnPolyurethane430 cpsMixed Viscosity14 linked
Related records are browsing suggestions, not validated substitutes.