MatWeb, The Online Materials Database
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.
| Physical Properties | Metric | English | Comments | |
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| Density | 0.95 g/cc | 0.0343 lb/in³ | TPE-0105 (ASTM D792) | |
Mechanical Properties | ||||
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| 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 | ||||
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| 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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