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Rulon Bearings

BCC Products Kwik Kast BC 8645 Urethane Casting
Categories: Polymer; Thermoset; Polyurethane, TS

Material Notes: BCC Kwik Kast/Gray is a two component, fast setting polyurethane reproduction plastic. BC8645 has been reformulated to enhance filler suspension and avoid hard packing @ 77ºF. Uses include; tracing models, core boxes, duplicating aids, patterns, prototypes, low temperature vacuum form tools, etc.

Information provided by BCC Products, Inc.

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Physical PropertiesMetricEnglishComments
Specific Gravity 1.80 - 1.90 g/cc1.80 - 1.90 g/ccASTM D792-66
Brookfield Viscosity 2075 cP2075 cP#3 spindle @ 20 rpm; ASTM D2393
Linear Mold Shrinkage 0.00080 cm/cm0.00080 in/inASTM D2566-69
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore D 85
@Temperature 23.9 °C
85
@Temperature 75.0 °F
ASTM D2240
Tensile Strength, Ultimate 33.61 MPa4875 psiASTM D638
Flexural Strength 43.1 MPa6250 psi
Compressive Strength 66.2 MPa9600 psiASTM D695
 
Thermal PropertiesMetricEnglishComments
Heat Distortion Temperature 78.9 °C174 °F
 
Processing PropertiesMetricEnglishComments
Cure Time 60.0 - 120 min
@Temperature 25.0 °C
1.00 - 2.00 hour
@Temperature 77.0 °F
demold time
Pot Life 5.0 - 6.0 min
@Temperature 25.0 °C
5.0 - 6.0 min
@Temperature 77.0 °F
1 lb. mass
 
Descriptive Properties
Mix Ratio1:1 by weight or volume
Wear Resistance (Tabor Method)Very Good

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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