ACM (Aluminum Composite)
Lightweight, rigid, weather resistant.
ACM is a sandwich of two aluminum skins bonded to a polyethylene core. The result: A very flat, lightweight, rigid panel that machines cleanly on CNC for signage parts, covers, signs, cabinets, and cladding.
- Thicknesses2 thicknesses, from 3 mm to 6 mm
- ProcessCNC routing, ±0.005 in tolerance
- OperationsPrinted graphic
- Max. size35 × 47 in per part, from one part
Faces are protected by film and offered in common finishes (white, black, brushed aluminum, etc.).
Key Characteristics
Structure: Aluminum skins + PE core for excellent stiffness/weight ratio and good flatness.
Finishes: Protective films on both sides; colors/effects per availability (e.g., matte white, black, brushed aluminum).
Cut orientation: Visible face in rendering is treated as top; machining performed with protective film in place.
Process: CNC cutting/machining (typical tolerance ±0.010").
Holding tabs: Small tabs may remain at perimeter; remove by light deburring.
Service temperature: Approx. −40°C to 80°C continuous depending on coating.
Chemical compatibility: Good weather, water, and mild detergent resistance; avoid aggressive solvents that may attack paint or core.
Outdoor/UV: Excellent outdoor performance when coating is appropriate; ideal for signs and cladding.
Common Applications
Signs, display panels, lettering, and cabinet faces.
Covers, lids, cladding, and decorative partitions.
Box and cabinet returns and frames.
Stiffening plates, backs, and lightweight supports.
Design Best Practices
Plan internal corners with small radii rather than sharp angles to limit stress concentrations.
Common assembly: Blind rivets, screws + washers, high-adhesion tapes, adhesives compatible with paint and PE core.
Avoid continuous heat sources; do not expose PE core to strong solvents or direct flames.
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Thicknesses and specifications — Aluminum Composite Panel (ACM)
Overview of available thicknesses and manufacturing capabilities for this material. The tabs above give full details per thickness.
View the thicknesses and tolerances table
| Thickness | Gauge | Cutting tolerance | Process |
|---|---|---|---|
| 0.118" | 3 mm | ±0.005" | CNC router |
| 0.236" | 6 mm | ±0.005" | CNC router |
| 0.118" | 3 mm | ±0.005" | CNC router |
| 0.236" | 6 mm | ±0.005" | CNC router |
| 0.118" | 3 mm | ±0.005" | CNC router |
| 0.236" | 6 mm | ±0.005" | CNC router |