Hexcel® HexWeb® HRH-327 - 1/8 - 5.5 Fiberglass Reinforced Polyimide Honeycomb

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Hexcel® HexWeb® HRH-327 - 1/8 - 5.5 Fiberglass Reinforced Polyimide Honeycomb
Categories:	Other Engineering Material; Composite Fibers; Polymer; Thermoset; Polyimide, TS
Material Notes:	Designation: Material-Cell Size (inches)-Density HexWeb® HRH-327 is a glass-fabric, bias weave reinforced plastic honeycomb that incorporates a polyimide resin system for the node adhesive as well as both the initial and final web impregnations. This material has been developed for extended service temperatures up to 500°F with short-term capabilities up to 700°F. Unless other specified, material will have standard postcure. Features: High-strength retention up to 500°F continuous service; 700°F short and intermittent term exposures; All polyimide resin and adhesive system; Good dielectric properties; Good insulative properties; Compatible with Hexcel polyimide adhesive, foam, and prepreg. Applications: A high-temperature nonmetallic honeycomb for use in sandwich structures that require good electrical properties or that see service temperatures in the range of 350°F-500°F. Applications include sandwich structures for Mach 2 and Mach 3 aircraft, high-energy radomes, structural and acoustical engine inlets and liners.
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Physical Properties	Original Value	Comments

Density	5.50 lb/ft³

Mechanical Properties	Original Value	Comments
Compressive Yield Strength	>= 0.600 ksi	Stabilized, min, preliminary value obtained at .500 inch thickness
	0.790 ksi	Stabilized, typical, preliminary value obtained at .500 inch thickness
Compressive Modulus	80.0 ksi	Stabilized, typical, preliminary value obtained at .500 inch thickness
Shear Modulus	14.5 ksi	Plate Shear, W Direction, typical, preliminary value obtained at .500 inch thickness
	30.0 ksi	Plate Shear, L Direction, typical, preliminary value obtained at .500 inch thickness
Shear Strength	>= 0.175 ksi	Plate Shear, W Direction, min, preliminary value obtained at .500 inch thickness
	0.245 ksi	Plate Shear, W Direction, typical, preliminary value obtained at .500 inch thickness
	>= 0.300 ksi	Plate Shear, L Direction, min, preliminary value obtained at .500 inch thickness
	0.465 ksi	Plate Shear, L Direction, typical, preliminary value obtained at .500 inch thickness

Thermal Properties	Original Value	Comments
Maximum Service Temperature, Air	500 °F	Extended
	700 °F	Short Term

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