... (260)Tensile, MPa (psi) 16.9 ( 245 0) 16.5 ( 240 0) 8 .4 (1220) 9 .4( 144 0)Elongation, % 45 0 44 0 960 830Hardness 61 60 51 54 Aged 96 hr at 100 oC (212 oF)Tensile, % change – 24 –8 –26 +6Elongation, % change ... 20–80 10–85 60–95 40 –70Typical tensile strengthPure gum, MPa –– 10 3 42 1 1 14 ––Pure gum, psi –– 1500 40 0 6000 200 200 2000 ––Reinforced, MPa 14 14 12 42 9 8 14 10Reinforced, psi 2000 2000 ... 3.50 19.2 55.8SBR (23% styrene)17.3 41 .5 12.8 34. 0 4. 74 14. 3 92.8 192Natural rubber (NR)23 .4 51.6 17.5 46 .4 6. 04 19.1 98.3 218Silicone (VMQ) 395 49 3 197 276 1580 153006aOhm Page 27 Wednesday,...