Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Core Type
- Composite Materials Functions
- Technologies
- Product Families
Features & Benefits
- Materials Features
- Product Highlights
- Lightweight
- Excellent thermal stability
- Very low coefficient of thermal expansion
- Good flatwise tensile strength
- Excellent dielectric properties
Applications & Uses
- Applications
- Applications
HexWeb® HRH-49 has been developed by Hexcel for use as a sandwich core material in radomes and antennas. When used with KEVLAR® 49 or graphite facings, the HexWeb® HRH-49 sandwich has been considered to have good thermal stability when exposed to cyclic heat exposures such as encountered in space applications.
Properties
- Mechanical Properties of HexWeb® HRH-49 at Room Temperature
The table below lists the HexWeb® HRH-49 product line and mechanical properties when tested per AMS-STD-401 using 0.500 inch core thickness. The typical values represent the mean average of a relatively large number of test values obtained from many blocks of honeycomb. Minimum properties are guaranteed minimum values of honeycomb when tested at ambient conditions per AMS-STD-401.
Hexcel Honeycomb Designation
Material-Cell-DensityCompressive Plate Shear Stabilized L Direction W Direction Strength psi Modulus ksi Strength psi Modulus ksi Strength psi Modulus ksi typ min typ typ min typ typ min typ HRH-49 - 1/4 - 2.1 130 100 25 85 50 2.7 40 30 1.3 Density – The acceptable tolerance on density will be ± 10%.
Packaging & Availability
- Standard Dimensions
HexWeb® HRH-49 is available in the following standard dimensions and tolerances :
L W T Min HRH-49 30 in. ± 2 in. 36 in. ± 2 in. 0.125 in. Dimensional Nomenclature
T = Thickness, or cell depth
L = Ribbon direction
W = Long direction, or direction perpendicular to the ribbon