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Physical Property |
Test Method |
Typical Values 45 mil* (1.14 mm) |
Typical Values 60 mil* (1.52 mm) |
Breaking Strength |
ASTM D-751 (Grab Method) |
290 lbf. (1.3 kN) |
330 lbf. (1.5 kN) |
Tear Strength |
ASTM D-751 (Procedure B, 8"X8" sample) |
100 lbf. (0.44 kN) |
110 lbf. (0.50 kN) |
Hardness Shore A |
ASTM D-2240 |
85 |
85 |
Dimensional Stability (% change) |
ASTM D-6878 (white: 24 hrs @ 129oF/54oC) |
+ 0.1 |
+ 0.1 |
Hydrostatic Resistance |
ASTM D-751 (Method A) |
400 psi (2.8 MPa) |
440 psi (3.0 MPa) |
Ozone Resistance** |
ASTM D-1149 (70 hrs @ 100o F / 37.8o C) |
Pass |
Pass |
Weather Resistance |
Xenon Arc, ASTM D-5019 |
No cracks or crazing |
No cracks or crazing |
EMMAQUA (Concentrated Natural Sunlight) (ASTM G-90) 4 million langleys total UV radiant exposure |
Pass |
Pass |
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Puncture Resistance |
FTM 101B (Method 2031) |
230 lbf. (1.0 kN) |
290 lbf. (1.3 kN) |
Water Vapor Transmission |
ASTM E-96 (Procedure B Condition BW @ 72o F/22.2o C) |
0.049 Perms |
0.049 Perms |
Solar Reflectance (initial) |
ASTM E-903 |
0.85 |
0.85 |
| Thermal Emmitance | ASTM E-408 | 0.87 | 0.87 |
*Thickness (nominal) per ASTM D-751 test method.
**Test performed on non-reinforced Stevens Hypalon® membrane
© Stevens Roofing Systems/JPS Elastomerics 2007. All rights reserved. |