Cast Urethane Hardness Data

Cast Urethane Hardness Data

Hardness Scales

(Increasing Hardness)

Urethane Hardness Scale

 Polyether Mechanical Properties


Mechanical PropertiesASTM Test MethodPP1501PP1601PP1701PP1801PP1901PP1502PP1602PP1702PP1802
Hardness
Durometer D2240 50A 60A 70A 80A 90A 50D 60D 70D 82D
Tensile Modulus, psi (MPa)
100% ext D412 230 335 349 780 1042 1966 2887 4991 N/A
300% ext D412 395 535 739 1400 1932 3970 5911 N/A N/A
Ultimate Tensile Strength, PSI D412 1700 2550 2255 5300 6063 6297 6273 7263 8200
Ultimate Elongation, % D412 500 555 504 580 501 385 313 274 20
Young's Modulus PSI N/A N/A 1212 4700 5111 11367 19271 42306 N/A
Tear Strength, PLI (kN/m)
Die C D624 155 220 138 270 400 488 621 1046 N/A
Split Tear D470 18 40 31 63 76 106 133 231 N/A
Compression/Flexure (PSI), % after 22 hrs at 158° F (70° C)
Method B, 25% Deflection D575 167 178 269 820 939 1793 2718 5032 N/A
Resilence (rebound), % D2632 62 63 15 64 50 51 55 66 N/A
Compression Set 4 13 51 28 20 26 32 N/A N/A
Flexural Modulus @ 5% Stress D790 N/A N/A N/A N/A N/A N/A N/A 96,000 320,000
Brittle Temp
(°C/°F) DMA (TAN DELTA) N/A N/A N/A -71/-96 -51/-60 -55/-67 -56/-69 -56/-69 N/A
Thermal Expansion
in/(in·°F) N/A N/A 1.05E-4 1.04E-4 1.04E-4 1.12E-4 9.8E-05 1.02E-4 N/A
Water Absorption
Fresh (Salt) N/A N/A 1.22 (1.20) 1.23 (1.31) 1.5 (1.49) 1.54 (1.45) 1.58 (1.40) 1.57 (1.41) N/A
Cured Density
G/CM³ N/A N/A 1.04 1.07 1.09 1.14 1.16 1.19 1.20
Max Operating Temperature (F)
(F*) 170 170 170 170 170 170 170 170 170
Shelf Life
Years 20 20 20 20 20 20 20 20 20

 Polyester Mechanical Properties


Mechanical PropertiesASTM Test MethodPP2401PP2501PP2601PP2701PP2801PP2901PP2502PP2602PP2702
Hardness
Durometer D2240 40A 50A 60A 70A 80A 90A 50D 60D 70D
Tensile Modulus, psi (MPa)
100% ext D412 93 169 323 407 578 875 1873 2444 3621
300% ext D412 176 317 503 685 994 1539 3295 4324 6230
Ultimate Tensile Strength, PSI D412 1470 3153 4345 6287 6960 6702 7916 7493 7400
Ultimate Elongation, % D412 697 632 744 682 671 590 470 415 351
Young's Modulus PSI 236 465 1155 1685 2681 4537 11534 420430 75000
Tear Strength, PLI (kN/m)
Die C D624 75 130 231 304 378 459 558 713 960
Split Tear D470 17 20 91 130 167 204 255 292 401
Compression/Flexure (PSI), % after 22 hrs at 158° F (70° C)
Method B, 25% Deflection D575 75 135 268 360 519 795 1696 2533 5700
Resilence (rebound), % D2632 20 18 46 40 37 35 51 48 54
Compression Set D790 4 2 31 20 25 25 26 40 N/A
Brittle Temp
(°C/°F) DMA (TAN DELTA) N/A N/A -29/-20 -24/-11 -27/-17 -25/-13 -20/-4 -13/-9 -33/-27
Thermal Expansion
in/(in·°F) N/A N/A 1.24E-4 1.04E-4 1.04E-4 1.14E-4 1.05E-4 1.16E-4 1.04E-4
Water Absorption
Fresh N/A N/A 0.97 0.97 1.21 1.31 1.30 1.34 1.25
Cured Density
G/CM³ N/A N/A 1.16 1.23 1.25 1.26 1.28 1.29 1.27
Max Operating Temperature (F)
(F*) 170 170 170 170 170 170 170 170 170
Shelf Life
Years 3 3 3 3 3 3 3 3 3