Aluminum Sheet Metal Flat Plate — Multiple Sizes, 0.3mm to 2mm Thick

Match the sheet dimensions to your project footprint. For shimming or small repairs, 100×100mm (≈3.9″×3.9″) is typically sufficient. For backing plates or larger panels, 200×200mm (≈7.9″×7.9″) or 250×250mm (≈9.8″×9.8″) are generally more appropriate. The 120×240mm (≈4.7″×9.4″) format works well when you need a rectangular strip rather than a square plate.

0.3mm and 0.5mm sheets are typically used for shimming, gaskets, and thin spacers where flexibility matters. 1mm is a versatile all-around thickness for brackets, guards, and light fabrication. 2mm provides greater rigidity and is generally suited for structural backing plates, enclosures, and applications requiring more stiffness. When in doubt, 1mm is the most commonly chosen option for general DIY aluminum flat plate work.

These sheets are general-purpose aluminum and are typically suited for light-to-medium fabrication tasks such as shimming, spacers, brackets, and enclosure panels. They are not rated for primary structural load-bearing applications. For specific load or yield strength requirements, please contact us to confirm the alloy grade before ordering.

Aluminum naturally forms a protective oxide layer that provides good resistance to moisture and general outdoor exposure. In most cases, these plates will perform well outdoors without additional treatment. For prolonged exposure to saltwater, coastal air, or highly acidic environments, an anodized or painted finish is generally recommended to extend service life.

Because these are blank flat plates with no pre-drilled holes, they are compatible with any fastener standard — metric (M3, M4, M5, M6, etc.) or imperial (SAE) — depending on how you drill or punch them. Standard HSS drill bits work well for aluminum. For tapped holes, aluminum is generally easy to thread with standard taps.

Yes. The 0.3mm and 0.5mm sheets can typically be scored with a utility knife and snapped, or cut with aviation snips. The 1mm and 2mm sheets generally require a jigsaw with a metal blade, an angle grinder, or a metal shear for clean cuts. Bending is achievable with a bench vise and mallet for thinner gauges; a sheet metal brake or press brake is recommended for clean, accurate bends in 2mm stock.

For single repairs or prototyping, 1 piece is usually sufficient. If you're working on a project that requires multiple identical parts — such as a set of mounting brackets or shim stacks — the 3- or 5-piece packs typically offer better per-unit value. Having a spare piece on hand is generally a good idea when cutting or drilling for the first time.

The specific alloy grade is not listed on the variant label. For most DIY shimming, spacer, and light fabrication tasks, the exact alloy is generally not critical. However, if your application requires a specific grade — such as 6061-T6 for machining or 5052-H32 for forming — please contact us to confirm before ordering.