Compare over 20 aluminum alloys to find the right material for you—all with material certificates for traceability.
Lightweight Aluminum Foam


- Yield Strength: See table
- Hardness: Not Rated
- Fabrication: Cast
- Specifications Met: ASTM B557, ASTM E9
Air is injected into the casting of this aluminum to reduce weight and create a crater-like appearance. These foam sheets are often used for sound insulation and architectural facades. Carbide- or diamond-tipped blades are required for machining. Diamond-tipped blades will cut this material more easily and not wear down as quickly as carbide-tipped blades.
Small-cell foam is highly dense and stiff, so it’s ideal for building high-performance acoustic panels and sturdy decorative elements with a fine, detailed texture. It’s one-sixth the weight of solid aluminum.
Large-cell foam is lightweight due to its low density. It’s one-third the weight of small-cell foam and about 5% the weight of solid aluminum. Since it allows some light through, you can use it to build architectural light diffusers. This foam has the appearance of an aluminum sponge.
Heat-Reflecting Flame-Retardant Silicone Foam Sheets

A thin layer of aluminized fiberglass on this silicone foam reflects heat to protect sensitive equipment. Foam, but not the adhesive, meets UL flame extinguishing specifications. Silicone maintains its flexibility across a wide range of temperatures. This foam has open-cell construction, which allows water, air, and gases to be absorbed. These sheets have an ultra-smooth texture for a sleek surface that's easy to wipe down.
- Color: White with Silver Face
- Temperature Range: -60° to 390° F
- Cell Type: Open
- For Use Outdoors: Yes
- Density: 12 lbs./cu. ft.
- Pressure to Compress 25%: 3 psi (Ultra Soft)
- Tensile Strength Rating: Not Rated
- Oil-Resistance Rating: Not Rated
- Color: White with Silver Face
- Temperature Range: -25° to 300° F
- Cell Type: Open
- For Use Outdoors: Yes
- Density: 12 lbs./cu. ft.
- Pressure to Compress 25%: 3 psi (Ultra Soft)
- Tensile Strength Rating: Not Rated
- Oil-Resistance Rating: Not Rated