Smooth-On / Material reference
PolyurethaneSmooth-Cast™ 300Q
Smooth-Cast™ 300Q is listed by Smooth-On as a polyurethane casting resin. The source reports mixed viscosity of 80 cps, mix ratio by weight of 100A:90B, pot life of 30 seconds. This record connects 18 reported fields with 16 manufacturer document links. Review the original technical data sheet for the applicable test conditions and processing instructions.
80 cpsManufacturer-reported
100A:90BManufacturer-reported
30 secondsManufacturer-reported
5 minutesManufacturer-reported
70Manufacturer-reported
1.05 g/ccManufacturer-reported
Technical & safety documents
16 linksFiles open on the manufacturer's document host. Region and language follow the source listing; confirm the revision inside the file.
Technical BulletinEnglish · Not specified
Open file Ficha Técnica en EspañolSpanish · Not specified
Open file Smooth-Cast 300Q SDS | EnglishEnglish · United States & Canada
Open file Smooth-Cast 300Q SDS | SpanishSpanish · United States & Canada
Open file Smooth-Cast 300Q SDS | FrenchFrench · United States & Canada
Open file Smooth-Cast 300Q SDS | EnglishEnglish · United Kingdom & European Union
Open file Smooth-Cast 300Q SDS | SpanishSpanish · United Kingdom & European Union
Open file Smooth-Cast 300Q SDS | FrenchFrench · United Kingdom & European Union
Open file Smooth-Cast 300Q SDS | GermanGerman · United Kingdom & European Union
Open file Smooth-Cast 300Q SDS | ItalianItalian · United Kingdom & European Union
Open file Smooth-Cast 300Q SDS | GreekGreek · United Kingdom & European Union
Open file Smooth-Cast 300Q SDS | DutchDutch · United Kingdom & European Union
Open file Smooth-Cast 300Q SDS | PolishPolish · United Kingdom & European Union
Open file Smooth-Cast 300Q SDS | CzechCzech · United Kingdom & European Union
Open file Smooth-Cast 300Q SDS | HungarianHungarian · United Kingdom & European Union
Open file Smooth-Cast 300Q SDS | NorwegianNorwegian · United Kingdom & European Union
Open file Reported specifications
18 fieldsMaterial and processing data
| Property | Reported value | Evidence |
|---|---|---|
| Mixed Viscosity | 80 cps | Manufacturer table |
| Color | White | Manufacturer table |
| Mix Ratio By Volume | 1A:1B | Manufacturer table |
| Mix Ratio By Weight | 100A:90B | Manufacturer table |
| Pot Life | 30 seconds | Manufacturer table |
| Cure Time | 5 minutes | Manufacturer table |
| Shore D Hardness | 70 | Manufacturer table |
| Specific Gravity | 1.05 g/cc | Manufacturer table |
| Specific Volume | 26.4 cu. in./lb. | Manufacturer table |
| Compressive Strength | 4,000 psi | Manufacturer table |
| Elongation @ Break | 5 % | Manufacturer table |
| Flexural Modulus | 128,000 psi | Manufacturer table |
| Flexural Strength | 4,510 psi | Manufacturer table |
| Heat Deflection Temp | 120 °F | Manufacturer table |
| Shrinkage | 0.01 in./in. | Manufacturer table |
| Tensile Modulus | 139,500 psi | Manufacturer table |
| Tensile Strength | 3,000 psi | Manufacturer table |
| Compressive Modulus | 45,800 psi | Manufacturer 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:90B. 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 / manufacturer | Family | Key specification | Documents | Add to comparison |
|---|---|---|---|---|
| Shell Shock™ FAST | Polyurethane | 3,000 cps | 15 linked | |
| Shell Shock™ SLOW | Polyurethane | 3,000 cps | 15 linked | |
| Smooth-Cast™ 300 | Polyurethane | 80 cps | 16 linked | |
| Smooth-Cast™ 305 | Polyurethane | 80 cps | 16 linked |