Page 307 - Handbook of Plastics Technologies

ELASTOMERS

Polyamide 1.00–1.20 60A–65D –40 170 F/G F/G G/E

Polyurethane 1.10–1.30 60A–55D~ –50 120 F/G F/G G/E

Copolyester 1.10–1.40 35D–72D –65 125 F P/G G/E

0.94–1.00 35A–50D –60 135 G/E G/E F/G
TPV TPO 0.89–1.00 60A–65D –60 70–100 P G/E P Does not include grades containing a special flame-retardant package, which generally raises the specific gravity by 20 to 30 percent.

Characteristics of Generic Classes of TPEs * Styrenic 0.9–1.20 20A–60D –70 70–100 P G/E P

TABLE 4.15 Property Specific gravity range Shore hardness Low-temperature limit, °C High-temperature limit, °C Compression set resistance, 100°C Resistance to aqueous fluids Resistance to hydrocarbon fluids *.P = poor, F = fair, G = good, E = excellent.

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