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Advanced Elastomer Systems Santoprene® 191-70PA Thermoplastic Rubber

Subcategory: Elastomer, TPE; Polymer; Thermoplastic

Material Notes:
A black thermoplastic elastomer especially formulated to be used in combination with polyamide (PA) for applications where hard/soft combinations are required. Since the product bonds to PA, typical applications are corrugated hose and fittings, soft grip handles and wheels with PA hubs. It can be processed using injection molding or extrusion.

Key Features: Excellent processing in injection molding; Smooth surface or 'soft touch'; Good rubbery properties; Excellent adhesion onto PA

Additional processing comments: This thermoplastic rubber is a shear-dependent material that can be processed on conventional thermoplastic equipment for injection molding or extrusion. For extrusion, a general purpose screw with a compression ratio of 2.5 to 3.0 is recommended. Material can be recycled. SANTOPRENE rubber is incompatible with acetal and PVC.

Values below are for injection molded plaques, side gated, 82.6 mm x 117.5 mm x 3.0 mm. Tensile properties measured across flow. Data provided by Advanced Elastomer Systems.

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Physical Properties Metric English Comments

Density 0.95 g/cc 0.0343 lb/in³ TPE-0105 (ASTM D792)

Mechanical Properties

Hardness, Shore A 70 70 5 Second; TPE-0169 (ASTM D 2240)

Tensile Strength, Ultimate 3.7 MPa 537 psi TPE-0153 (ASTM D 412)

Elongation at Break 270 % 270 % TPE-0153 (ASTM D 412)

100% Modulus 0.0023 GPa 0.334 ksi TPE-0153 (ASTM D 412)

Graves Tear Strength 22 kN/m 126 pli TPE-0056 (ASTM D 624)

Compression Set 28 % 28 % 23°C, 22 hrs.; TPE-0016 (ASTM D 412)

Compression Set, Elevated Temperature 41 % 41 % 70°C, 22 hrs.; TPE-0016 (ASTM D 412)

Compression Set, Elevated Temperature 46 % 46 % 100°C, 22 hrs.; TPE-0016 (ASTM D 412)

Processing Properties

Processing Temperature 260 - 280 °C 500 - 536 °F Recommended

Mold Temperature Min 60 °C Min 140 °F 2K molding

Mold Temperature Min 90 °C Min 194 °F insert molding

Drying Temperature 82 °C 180 °F Desiccant drying for 3 hours recommended

Dry Time 3 hour 3 hour

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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 consistant 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 disclaimer and 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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