Hexcel® HexWeb® HRH-78 - 3/8 - 1.5 Commercial Grade Nomex Honeycomb/Phenolic Resin

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Hexcel® HexWeb® HRH-78 - 3/8 - 1.5 Commercial Grade Nomex Honeycomb/Phenolic Resin (discontinued **)
Categories:	Polymer; Thermoset; Phenolic
Material Notes:	Designation: Material-Cell Size (inches)-Density HexWeb® HRH-78 is manufactured from commercial grade aramid paper sheets. A thermosetting adhesive is used to bond these sheets at the nodes, and after expanding, the block is dipped in a phenolic resin. After curing the resin, slices are cut to the desired thickness. Using this process, a wide range of cell sizes, paper thicknesses, and densities can be produced. An OX-Core® configuration featuring enhanced formability is available upon request. Features: High strength at low densities; Small cell sizes at low densities; Damage resistant under normal shop use; Formable; Flame resistant; Good bonding surfaces; Good thermal and electrical insulator. Applications: HexWeb® HRH-78 was developed by Hexcel to offer most of the characteristics of HexWeb® HRH-10 for exclusive use in non-aerospace applications, such as pleasure boats, skis, surfboards, ground antennas, and navy joiner panels.
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Physical Properties	Metric	English	Comments

Density	0.0240 g/cc	0.000868 lb/in³

Mechanical Properties	Metric	English	Comments
Compressive Yield Strength	0.586 MPa	85.0 psi	Bare
	0.655 MPa	95.0 psi	Stabilized
Compressive Modulus	0.0414 GPa	6.00 ksi	Stabilized, preliminary value obtained from limited testing
Shear Modulus	0.0103 GPa	1.50 ksi	Plate Shear, W Direction, preliminary value obtained from limited testing
	0.0172 GPa	2.50 ksi	Plate Shear, L Direction, preliminary value obtained from limited testing
Shear Strength	0.228 MPa	33.0 psi	Plate Shear, W Direction
	0.414 MPa	60.0 psi	Plate Shear, L Direction

**
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PHEXC372 / 98843

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