Typical Physical Properties of Compounds of Urethane
Polyurethane Type L42 L100 L167 L315
Hardness, Durometer Value
(ASTM d676-59T)
80A 90A 95A 75D*
Specific Gravity 1.07 1.10 1.13 1.21
Tensile Strength, MPa (psi)
(ASTM D412-61T)
20.7 (3,000) 31.0 (4,500) 34.5 (5,000) 62.0(9,000)
Elongation At Break, %
(ASTM D412-61T)
800 450 400 270
100% Modulus, MPa (psi)
(ASTM D412-61T)
2.8 (400) 7.6(1,100) 12.4(1,800) 32.0(4,650)
Compression Set, %
Method B (ASTM D395)
Method A (ASTM D395)**
 
45
 
27
9
 
40
10
 

10
Resilience, %
Rebound (Bashore)
 
 
45
 
40
 
45
Impact Resistance,
Izod notched
J/m (ft.lb./In)
(ASTM D256)
24 Degrees C ( 75Degrees F)
-40 Degrees C (-40 Degrees F)
 
Flexed

 
 
Flexed

 
 
Flexed

 
800.7(15)
58.7 (1.1)
Solenoid Brittle Temp.,
Degrees C (Degrees F)
(ASTM D746-57)
Below -80 (Below -120) Below -70 (Below-94) Below -70) (Below -94) -64
(-83)
Abrasion Index, NBS, %
(ASTM D1630, Nat’l Bureau of Standards Abrader)
110 175 400 435
Tear Strength Split, kN/m (pli)
(ASTM D470)
12.2(70) 13.1 (75) 26.2 (150) 192.2 (110)
* The D Scale is used to measure durometer hardness above 95A by Shore, Rex, or Wallace durometers.
** Measured at 9.3 MPa (1,350 psi)