6061 Round Aluminum Sheet Disc Plate Thick 1/2/3/5~6mm Model Craft Dia 100~300mm

For decorative inlays, light covers, or shim applications, 1–2mm discs provide adequate rigidity with minimal weight. For structural spacers, heat-sink bases, or parts that will be drilled and tapped, 3–6mm offers the wall material needed to hold threads cleanly. As a rule of thumb, the disc thickness should be at least 1× the fastener diameter for reliable thread engagement.

Select the diameter closest to your finished part size, then plan to machine or trim to final dimension. The 100mm disc suits small enclosure covers and RC component plates; the 200mm disc works well for medium fixture bases and speaker baffles; the 300mm disc is suited to larger heat spreaders, table inserts, and decorative panels. All diameters carry a typical tolerance of ±0.5mm.

6061-T6 has a tensile strength of approximately 310 MPa and a yield strength of approximately 276 MPa, making it suitable for moderate structural loads in brackets, spacers, and mounting plates. It is not recommended for high-cycle fatigue applications or heavy structural members where 7075 or steel would be more appropriate. For DIY fixtures, model frames, and light fabrication, 6061 is a reliable choice.

Yes. 6061 aluminum anodizes well, producing a hard, corrosion-resistant oxide layer that can be dyed in a range of colors. The mill-finish surface should be cleaned and lightly sanded or etched before anodizing. Standard powder coating and spray painting also adhere well after proper surface preparation (scuff, degrease, and apply a self-etching primer).

Yes. 6061-T6 machines cleanly with standard HSS or carbide drill bits. Use cutting fluid or light oil to extend bit life and reduce heat buildup. For tapping, use a spiral-flute tap with aluminum-specific cutting oil; the 3mm, 5mm, and 6mm thick discs provide sufficient depth for M3–M6 threads. The 1mm and 2mm discs are better suited to through-hole applications rather than tapped threads.

For prototyping or one-off builds, the 1–3 piece options minimize cost and storage. For small batch production (5–25 units), ordering the 10–25 piece packs typically reduces per-unit cost and ensures you have spares for machining errors or rework. Check the variant pricing to compare cost-per-piece across pack sizes before adding to cart.

Discs are cut and finished to arrive flat within typical aluminum sheet flatness tolerances. Minor surface marks from handling may be present on the mill finish. If your application requires a mirror or precision-ground surface, light facing on a lathe or surface grinder is recommended before final use.