Cast Urethane Hardness Data

Cast Urethane Hardness Data
Back to Technical Data

Use this chart to compare hardness and mechanical properties when specifying custom polyurethane bushings or other molded urethane products. For applications with elevated operating temperatures, see our high temperature polyether grade.

Hardness Scales

(Increasing Hardness)

Urethane Hardness Scale

 Polyether Mechanical Properties

Download / Print PDF

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

Download / View PDF

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 20430 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