ACP vs ACM: the same panel, two names.
On an architect's spec sheet or in a distributor's catalog, you'll run into both acronyms — ACP (aluminum composite panel) and ACM (aluminum composite material). For the professional buyer, the real question isn't which name to use — it's the composition, format and finish of the panel you're buying. This guide clarifies both, then breaks down the criteria that matter for a volume purchase.
ACP, ACM:
two names, one product.
Both acronyms describe the same family of product: a "sandwich" panel made of two aluminum skins bonded to a composite core. Among manufacturers and distributors, ACP (the panel) shows up more often in product catalogs. Among architects and engineers, ACM (the material) shows up more often in project specs and quotes. An Ahlum ACP panel is an ACM panel: same construction, same spec sheet.
| Term | What it refers to |
|---|---|
| ACP Aluminum Composite Panel |
The finished product, ready to cut, fold and install. Common term among panel manufacturers and distributors. |
| ACM Aluminum Composite Material |
The aluminum composite material category. Common term in architecture and engineering specs. |
| At Ahlum | One product behind both acronyms: 5005 aluminum composite, polyethylene core, matte PVDF finish — in 4×8 and 5×10. |
What defines
a good ACP/ACM panel.
Whatever acronym your supplier uses, these are the construction criteria worth checking before you buy.
5005 aluminum · PE core
Two 0.5 mm sheets of 5005 aluminum bonded to a polyethylene (PE) core. Total thickness 4 mm — light, rigid, warp-free.
Matte PVDF coating
Matte PVDF coating on the exposed face: stable color, UV- and weather-resistant, built for exterior façades.
4×8 and 5×10
4×8: 1220 × 2440 mm (48″ × 96″), 32 sq. ft. per panel. 5×10: 50 sq. ft. per panel, reserved for distributor accounts.
How to choose,
as a professional buyer.
Three questions to settle before you place an order — whatever acronym your supplier prints on the purchase order.
Composition & finish
Check the alloy grade, skin thickness and coating type. A matte PVDF finish holds color better on exterior façades than an entry-level coating.
Format & seams
5×10 reduces the number of seams on a large commercial façade or a full-height sign. 4×8 remains the standard format for most job sites.
Volume & supply
A single-sheet purchase and a multi-pallet purchase aren't sourced the same way. The distributor program gives you a price that follows your volume.
ACP, ACM:
your questions.
Are ACP and ACM the same product?
Yes. Both acronyms describe the same construction — two aluminum skins bonded to a composite core. The difference is in who uses which term, not in the panel itself.
Which format should I choose: 4×8 or 5×10?
4×8 (32 sq. ft.) fits most projects. 5×10 (50 sq. ft.) reduces seams on large commercial surfaces, but is reserved for distributor accounts.
Can I buy ACP/ACM panels in volume from Ahlum?
Yes, through the distributor program: price follows volume (in-stock pallet or multi-pallet), with delivery across the Montreal area or pickup in Dorval.
Get the right panel.
Order a sample to confirm the finish, a spec sheet for your quote, or volume pricing for your next job.