HexWeb® HRP

Identification & Functionality

Core Type

FRP Honeycomb

Reinforcement Material

Glass Fibers

Composite Materials Functions

Core Material

Technologies

Composite Materials

Product Families

Composite Materials — Core Materials

Honeycomb

Features & Benefits

Materials Features

Excellent Substrate Adhesion,

Thermally Insulating

Product Highlights

• High Strength up to 175°C
• Good Insulation Properties
• Good Dielectric Properties
• Good Bonding Surface
• Readily Heat Formed

Applications & Uses

Markets

Automotive & Transportation,

Electrical & Electronics

Applications

Electrical & Electronics — Parts & Components

Housings & Enclosures

Automotive & Transportation — Transportation

Aerospace & Aviation,

Marine,

Rail & Mass Transit

Applications

HexWeb HRP has proven to be an excellent core material for radomes, aircraft structural parts and fairings, heat shields, and other assemblies that see elevated temperature service.

Processing

HexWeb HRP materials can be provided machined or formed ready for bonding. This can include edge chamfering, simple and complex taper cuts and other special machined configurations as well as precurved core formed to cylindrical or compound curvatures. Contact the nearest Hexcel Sales Office for additional information

Properties

Mechanical Properties

The following mechanical properties apply to the various HRP core types when tested per MIL-STD-401B at 12.7mm thickness, and meet the requirements of MIL-C-8073D, AMS3715, and most airframe manufacturers' specifications.

  

"Hexcel Honeycomb Designation Material-Cell-Density"	Compressive					Plate Shear
	Bare		Stabilized			L Direction		W Direction
	Strength Mpa		Strength Mpa		Modulus Mpa	Strength Mpa		Strength Mpa		Modulus Mpa
Hexagonal	typ	min	typ	min	typ	typ	min	typ	min	typ
HRP-3/16-4.0*	3.31	2.76	4.07	3.31	393	2.14	1.45	1.1	0.9	45
HRP-3/16-5.5	5.52	4.28	6.21	5.17	655	3.38	2.69	1.83	1.38	76
HRP-3/16-7.0	7.93	5.52	8.97	7.17	938	4.48	3.52	2.55	2	97
HRP-3/16-8.0	9.31	7.59	10.55	8.83	1131	5.17	4.14	3.17	2.55	131
HRP-3/16-12.0	15.86	12.41	17.38	13.52	1793	6.79	5.62	4.66	3.62	193
HRP-1/4-3.5	2.69	1.93	3.14	2.76	317	1.72	1.24	0.86	0.69	34
HRP-1/4-4.5	4.03	3.31	4.41	3.86	483	2.45	1.93	1.38	1.07	55
HRP-1/4-5.0	4.69	3.66	5.66	4.55	579	2.76	2.1	1.59	1.24	69
HRP-1/4-6.5	7.07	5.52	8.14	6.34	828	4	3.1	2.28	1.79	90
HRP-3/8-2.2	1.14	0.86	1.24	1	90	0.83	0.62	0.41	0.31	21
HRP-3/8-3.2	2.17	1.79	2.69	2.07	262	1.41	1.1	0.76	0.59	34
HRP-3/8-3.5	2.34	2	2.83	2.24	283	1.45	1.14	0.83	0.66	37
HRP-3/8-4.5	3.79	3.1	4.76	3.66	448	2.24	1.79	1.31	1.03	55
HRP-3/8-6.0	5.72	4.48	6.9	5.52	690	3.24	2.76	1.93	1.45	81
HRP-3/8-8.0	9.66	6.9	10.62	8.14	1034	4.83	3.72	3.1	2.41	124
OX-Core
HRP/OX-1/4-4.5	3.86	3.31	4.66	3.72	297	1.72	1.38	1.79	1.45	103
HRP/OX-1/4-5.5	5.34	4	6.14	4.62	448	2.07	1.59	2.28	1.76	124
HRP/OX-1/4-7.0	7.93	5.86	8.48	6.83	579	2.72	2.14	3.1	2.41	138
HRP/OX-3/8-3.2	2.34	1.79	2.69	2.07	221	0.97	0.76	1.03	0.83	62
HRP/OX-3/8-5.5	4.83	4	5.66	4.24	414	1.86	1.45	2.45	1.9	117

Packaging & Availability

Standard Dimensions

HexWeb HRP honeycomb is available in the following standard sizes for the hexagonal and overexpanded configurations.

	L	W	Block T	T min
Hexagonal	915 +25 -50mm	2440 ± 150mm	560mm	3mm
Overexpanded	560 ± 50mm	2440 ± 150mm	450mm	3mm

Thickness Tolerance 

Tolerances on cut thickness are as follows:

• 3 to 50mm tolerance will be ± 0.15mm
• 50 to 100 tolerance will be ± 0.25mm
• 100mm and over tolerance will be ± 1.65mm

Dimensional Nomenclature

T = Thickness, or cell depth
L = Ribbon direction, or width
W = Long direction, or direction perpendicular to the ribbon

Hexagonal Cell

Overexpanded Cell