| Porous Brorae............ 4,500 Porous iron................ 8,000 Phenolics................... 6,000 Nylon8....................... 1,000 TEE............................ 500 ReinforcedTelfon8.... 2,500 'TEE fabric................ 60,000 Polycarbonate............ 1,000 Acetal........................ 1,000 Carbon-graphite........ 600 |