... ±2.515.4300%stress at definite elongation(145°C,35min)Mpa20.6±2.519.1300%stress at definite ... 5±2.621.6tensile-strength(145°C,35min)Mpa≥24.527.9maximum elongation(145°C,35min)%≥330420 SBR 1712SBR1712 , The ... 3-14.312.7300%stress at definite elongation(145°C,35min)Mpa11.6-16.613.6300%stress at definite ... elongation(145°C,50min)Mpa12.6-17.515.6tensile-strength(145°C,35min)Mpa≥18.419. ...