Technical Data Sheet Harkness Industries MP 700 Polyurethane Composition MP 700 is a high performance polyester based urethane. This polyurethane is formulated to give an excellent balance of properties for a wide variety of applications including springs scraper blades die cutting pads bumpers chute liners wheels tires and many more. Physical Properties Shore A Hardness . 70 - 5 100 Modulus psi Mpa 310 2.2 300 Modulus psi Mpa 850 5.8 Tensile psi Mpa . 4800 32.8 Elongation 500 Tear Strength Split ASTM D-470 pli kNm .. 55 9.5 Tear Strength Die C ASTM D-624 pli kNm 240 41.8 Tear Strength Die B ASTM D-624 pli kNm 215 37.6 Compression Set 12 22 hours 158F 70C Method B Bell Brittle Point F C .. - 70 -57 Tabor Abrasion H-18 100 gm Load Average Loss 1000 cycles grams ... 0.040 Specific Gravity . 1.26
