Technical Data Sheet Harkness Industries MP 900 Polyurethane Composition MP 900 is a high performance polyether based urethane formulated to give an excellent balance of properties including tear and abrasion resistance low heat build-up good resilience hydrolysis resistance and hardness stability. MP 900 may be selected for a wide variety of applications including springs scraper blades material handling equipment rolls shock absorbers bumpers chute liners wheels tires and many more. Physical Properties Shore A Hardness . 90 - 5 100 Modulus psi Mpa 1100 7.6 300 Modulus psi Mpa 2100 14.5 Tensile psi Mpa . 4500 31.0 Elongation 450 Tear Strength Split ASTM D-470 pli kNm .. 90 15.7 Tear Strength Die C ASTM D-624 pli kNm 400 70.0 Bashore Rebound . 42 Compression Set 30 22 hours 158F 70C Method B Bell Brittle Point F C .. - 80 -63 Abrasion Resistance NBS Index ..... 175 Specific Gravity . 1.10
