Knowde Enhanced TDS
Identification & Functionality
- Chemical Name
- Core Type
- Composite Materials Functions
- CAS No.
- 7429-90-5
- EC No.
- 231-072-3
- Technologies
- Product Families
Features & Benefits
- Materials Features
- Features
- Aerospace structural grade honeycomb.
- Superior corrosion protection compared to standard aluminum honeycomb.
- Enhanced bondability and fatigue strength.
- Highest strength and rigidity to weight for sandwich construction.
- Available in 5052 aluminum alloys.
Applications & Uses
- Markets
- Composites End Use
- Applications
PAA-SHH has been developed to enhance the properties of standard aluminum honeycomb against the corrosion. The enhanced corrosion protection of PAA-SHH can provide a potential to reduce a life cycle cost or/and to reduce manufacturing cost occurred for additional processes to improve corrosion protection and durability of the standard aluminum honeycomb. For this reason, PAA-SHH will be an alternative for the standard aluminum honeycomb being used for the bonded assemblies of aircrafts.
Properties
- Mechanical Properties
| Value | Units | Test Method / Conditions | |
| Density | 4.5 | pcf | - |
| Compressive Strength | 405.0 | psi | - |
| Plate Shear Strength (L Direction) | 285.0 | psi | - |
| Plate Shear Strength (W Direction) | 168.0 | psi | - |
| Plate Shear Modulus (L Direction) | 51.2 | psi | - |
| Plate Shear Modulus (W Direction) | 25.0 | psi | - |
Regulatory & Compliance
- Quality Standards
Technical Details & Test Data
- Product Information
Type Designation
PAA-SHH is designated as follows:
Material, Cell Size, Alloy, Foil Thickness
Example: PAA-SHH 1/8-5052-001
Where:
- PAA-SHH - PAA aluminum hexagonal
- 1/8 – 1/8 inch cell size
- 5052 – 5052 aluminum alloy
- 001 – .001” nominal foil thickness
Dimensional Nomenclature
L = Ribbon Direction, or Width
W = Length, or Perpendicular to the Ribbon
T = Core Thickness, or Cell Depth
Special Cell Configuration and Processing
In addition to the hexagonal cell shapes, PAA aluminum honeycomb is available in the flexible cell configuration in 5052 alloy. Please refer to Document# TD-SFH-01 for PAA-SFH aluminum flexible honeycomb. PAA-SHH is also available machined to customer’s requirements including flat pieces cut to size.
Standard Dimensions
PAA-SHH is available in the following standard dimensions with the tolerances as indicated.
Alloy L Direction W Direction T Minimum 5052 42” +2/-0” 96” +4/-0” 0.120” Tolerances on cut thickness are as follows:
±0.005” for 0.120” to 4.000” Thickness
±0.062” for 4.001” and over
Note: 1) T maximum and T minimum to be confirmed with Showa Sales Office.
2) Longer L and W directions are available. Please contact Showa Sales Office.
Standard Specifications
Specification PAA-SHH meets the requirements of Military Specification MIL-C-7438 where applicable.
Density: Tolerance of the density of PAA-SHH will be plus or minus 10 percent of nominal density shown in the table below.
- Dimensional Nomenclature
