High-frequency precision for advanced antenna applications
ROHACELL® 71 HF
At 75 kg/m³, ROHACELL® 71 HF is the densest of the 3 grades in the ROHACELL® HF range.
ROHACELL® HF is a closed-cell rigid foam based on polymethacrylimide (PMI) chemistry completely free of CFC’s. With its extremely low dielectric constants and particularly favorable transmission properties at high frequencies, ROHACELL® HF is ideal for use in antenna applications.
Mechanical properties
- Density
- 75 kg/m³
- 4.68 lbs/ft³
- Compressive Strength
- 1.5 MPa
- 218 psi
- Tensile Strength
- 2.8 MPa
- 406 psi
- Shear Strength
- 1.3 MPa
- 189 psi
- Elastic Modulus
- 92 MPa
- 13,343 psi
- Shear Modulus
- 29 MPa
- 4,206 psi
- Strain at Break
- 4.5 %
Compare ROHACELL® HF grades
Properties
Density
32kg/m³
2.00lbs/ft³
52kg/m³
3.25lbs/ft³
75kg/m³
4.68lbs/ft³
Compressive Strength
0.4MPa
58psi
0.9MPa
131psi
1.5MPa
218psi
Tensile Strength
1MPa
145psi
1.9MPa
276psi
2.8MPa
406psi
Shear Strength
0.4MPa
58psi
0.8MPa
116psi
1.3MPa
189psi
Elastic Modulus
36MPa
5,221psi
70MPa
10,153psi
92MPa
13,343psi
Shear Modulus
13MPa
1,885psi
19MPa
2,756psi
29MPa
4,206psi
Strain at Break
3.5%
4%
4.5%