Medium Material Specification

Physical Property ASTM Method A B C D
Hardness, Shore A - 80 90 93 95
Shore D - - - - 50
Tensile, psi (MPa) D412 3600 (25) 4100 (28.3) 5400 (37) 5500 (37.9)
Elogation At Break, % D412 750 450 400 350
100% Modulus, psi (MPa) D412 560 (3.9) 1000 (6.9) 1800 (12.4) 2200 (15.2)
300% Modulus, psi (MPa) D412 800 (5.5) 1700 (11.7) 3100 (21.4) 4100 (28.3)
Split Tear, lb./in. (kN/m) D470 80 (14) 65 (11.4) 80 (14) 125 (21.9)
Die C Tear, lb./in. (kN/m) D624 320 (56) 370 (64.8) 430 (75) 500 (87.6)
Bashore Rebound, % D2632 55 50 45 42
Compression Set (Method B) 22 Hours At 158°F (70°C), % D395 45 25 30 32
Compressive Modulus, psi (MPa)
Third Cycle D575
5% 115 (0.8) 210 (1.4) 355 (2.5) 500 (3.4)
10% 190 (1.4) 350 (2.4) 590 (4.1) 840 (5.8)
15% 260 (1.8) 490 (3.4) 820 (5.7) 1200 (8.3)
20% 370 (2.6) 680 (4.7) 1130 (7.8) 1650 (11.4)
25% 520 (3.6) 940 (6.5) 1550 (10.7) 2100 (14.5)
Brittle Temperature, °F (°C) D748 <-94(<-70) <-94(<-70) <-94(<-70) <-94(<-70)
Spcific Gravity D792 1.07 1.08 1.11 1.13
Dynamics - Very good Excellent Excellent Excellent