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PAA-SDFH® PAA-SDFH® (Phosphoric Acid Anodized-Showa Double Flexible Honeycomb) 4.8-5052-47

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PAA-SDFH® PAA-SDFH® (Phosphoric Acid Anodized-Showa Double Flexible Honeycomb) 4.8-5052-47 is an aerospace grade 5052 aluminum honeycomb materials produced from phosphoric acid anodized aluminum sheets. Phosphoric acid anodize gives an excellent corrosion resistance to aluminum alloy, and the surface treatment system with a corrosion prohibited primer provide the greatest bondability and fatigue strength under critical conditions such as hot & wet condition. PAA-SDFH is available in two selections of core density and foil thickness.

Functions: Core Material

Core Type: Aluminum Honeycomb

Technical Data Sheet
  • TypeDocument Name
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Knowde Enhanced TDS

Identification & Functionality

Chemical Name
Composite Materials Functions
CAS No.
7429-90-5
EC No.
231-072-3
Structural Appearance

PAA-SDFH® PAA-SDFH® (Phosphoric Acid Anodized-Showa Double Flexible Honeycomb) 4.8-5052-47 - Structural Appearance

Features & Benefits

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

Composites End Use
Applications

PAA-SDFH has been developed to enhance the properties of standard aluminum honeycomb against the corrosion. The enhanced corrosion protection of PAA-SDFH 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-SDFH will be an alternative for the standard aluminum honeycomb being used for the bonded assemblies of aircrafts.

Properties

Mechanical Properties
ValueUnitsTest Method / Conditions
Density4.8pcf-
Compressive Strength872.0psi-
Plate Shear Strength (L Direction)319.8psi-
Plate Shear Strength (W Direction)212.6psi-
Plate Shear Modulus (L Direction)64642.0psi-
Plate Shear Modulus (W Direction)21902.0psi-

Technical Details & Test Data

Product Information

Type Designation

PAA-SDFH is designated as follows:

Material, Alloy, density, Foil Thickness Example: PAA-SDFH 4.8-5052-47

PAA-SDFH:PAA aluminum double flexible honeycomb

  • 5052 : 5052 aluminum alloy 
  • 47: Foil thickness in ten thousandths of an inch
  • 4.8:nominal core density in pound per cubic foot

Standard Dimensions

Alloy L Direction W Direction T Minimum
5052 24” +4/-0” 96” +8/-0” 0.200”

Tolerances on cut thickness are as follows:

  • ±0.005” for 0.120” to 4.000” Thickness
  • ±0.062” for 4.001” and over.