Rigid Rectangular WaveGuides
from 2 to 50 GHz
| EIA
WR |
Frequency
Range (GHz) |
External Dimensions
(mm) |
Internal Dimensions
(mm) |
External Tolerances Internal Tolerances (mm) |
Wall Thickness
(mm) |
Aviable |
| 137 | 5.38 – 8.18 | 38.100 x 19.050 | 34.849 x 15.799 | ±0.051 / ±0.046 | 1.625 | 200 mt |
| 112 | 6.58 – 10.0 | 31.750 x 15.880 | 28.499 x 12.624 | ±0.051 / ±0.038 | 1.625 | 200 mt |
| 90 | 8.20 – 12.5 | 25.400 x 12.700 | 22.860 x 10.160 | ±0.025 / ±0.025 | 1.270 | 200 mt |
| INVAR (Nilo 36) | ||
| Coefficent of Thermal Expansion | unit | value |
| 20-100°C | 10-6/°C | 0.8 – 1.7 |
| 20-100°C | 10-6/°C | 2.2 – 2.9 |
| Density | g/cm3 | 8.13 |
| Curie Temp | °F | 446 |
| °C | 230 | |
| Meltng Point | °F | 2462 |
| °C | 1450 | |
| Modulus of Elasticity at 20°C | MPa | 145000 |
| Youngs / Shears Modulus | MPa | 57000 |
| Specific Heat at 20°C | J/g-°C | 0.51 |
| Thermal Conductivity at 20°C | J/cm.s.°C | 0.105 |
| Poisson’s coefficent | 0.25 | |
