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Custom Composite Panels from China Suppliers - Quality Manufactured by Our Factory in Various Sizes and Shapes
Panel Type Comparison — Mechanical Properties
| Panel Type | Flatwise Tensile Strength | Climbing Drum (Per Unit Width) | Stabilized Compressive Strength | Thickness | Weight |
|---|---|---|---|---|---|
| Epoxy Fiberglass Skin / Aluminum Core | 644 lb/in² (4.44 N/mm²) | 52 lbf (231 N) | 369 lb/in² (2.54 N/mm²) | 6 mm to 25 mm | 3.9 kg/m² to 4.9 kg/m² |
| Aluminum Skin / Aluminum Core | 998 lb/in² (6.88 N/mm²) | 92 lbf (407 N) | 749 lb/in² (5.16 N/mm²) | 6 mm to 25 mm | 5.16 kg/m² to 8.21 kg/m² |
| Fiberglass Skin / Polypropylene Core | 89 lb/in² (0.62 N/mm²) | 22 lbf (98 N) | 13015 lb/in² (3.53 N/mm²) | 6 mm to 25 mm | 3.9 kg/m² to 5.46 kg/m² |
Frequently Asked Questions
Q
What is the difference between Aluminum Skin/Aluminum Core and Epoxy Fiberglass Skin/Aluminum Core panels?
A
The Aluminum Skin/Aluminum Core panel offers significantly higher mechanical strength — with a flatwise tensile strength of 998 lb/in² and a climbing drum value of 92 lbf — compared to the Epoxy Fiberglass Skin/Aluminum Core panel (644 lb/in² and 52 lbf respectively). The aluminum-skin variant is better suited for structural applications requiring higher load resistance.
Q
Which panel type provides the highest stabilized compressive strength?
A
The Fiberglass Skin/Polypropylene Core panel has the highest stabilized compressive strength at 13,015 lb/in² (3.53 N/mm²), far exceeding both aluminum core variants. This makes it an excellent choice for applications where compressive load resistance is the primary requirement.
Q
Are all three panel types available in the same thickness range?
A
Yes, all three panel types — Epoxy Fiberglass Skin/Aluminum Core, Aluminum Skin/Aluminum Core, and Fiberglass Skin/Polypropylene Core — are available in thicknesses ranging from 6 mm to 25 mm, providing flexibility for various design and engineering requirements.
Q
Which panel type is the lightest in weight?
A
Both the Epoxy Fiberglass Skin/Aluminum Core and the Fiberglass Skin/Polypropylene Core panels share the lowest minimum weight of 3.9 kg/m². The Aluminum Skin/Aluminum Core panel is the heaviest, starting at 5.16 kg/m² and reaching up to 8.21 kg/m², due to the higher density of aluminum skins.
Q
What does the Climbing Drum value indicate in panel performance?
A
The Climbing Drum value (per unit width) measures the peel strength between the face skin and the core of a sandwich panel. A higher value indicates stronger bonding and better resistance to delamination. The Aluminum Skin/Aluminum Core panel has the highest peel strength at 92 lbf (407 N), making it the most resistant to skin separation under stress.
Q
Which panel type is best suited for lightweight structural applications?
A
The Epoxy Fiberglass Skin/Aluminum Core panel offers a well-balanced combination of low weight (starting at 3.9 kg/m²) and moderate tensile and compressive strength, making it an ideal choice for lightweight structural applications such as aerospace, transportation, and architectural panels where weight savings are critical.
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