| NONEVACUATED PERLITE
CRYOGENIC AND LOW TEMPERATURE INSULATION SPECIFICATIONS |
| Density: |
3 to 6 lb./ft3 |
| Sieve Analysis (mesh is U.S. Standard)
Percent Weight Retained: |
Max. 10%=16 mesh (1.18 mm) Min. 50%=100 mesh (0.15 mm) |
| Thermal Conductivity*
Temperature applications: (at mean temperatures of. -40 F or -40 C) |
0.24-0.27 Btu.in/h.ft3.F (0.035-0.039 W/m. K)
|
| Nonevacuated Cryogenic Applications: (at
mean temperatures -195 F or -126 C) |
0.17-0.20 Btu.in/h.ft3.F (0.025-0.029 W/m.
K) |
| *Thermal
conductivity varies with temperature, density, pressure, and conductivity of the gas which
fills the annulus or insulation space. |
