10pcs Aluminium Sheet Plate 7075 Alu Board | Thick 4mm | 100x100mm Wide

7075 uses zinc as its primary alloying element and achieves tensile strength typically in the 500–570 MPa range, making it roughly 40–60% stronger than 6061 (which typically runs 270–310 MPa). The trade-off is that 7075 is slightly harder to weld and costs more. For load-bearing brackets, jigs, and structural parts where strength matters more than weldability, 7075 is the better choice.

Yes. 7075-T6 machines cleanly with carbide-tipped end mills, HSS drill bits rated for aluminum, and standard taps. Use cutting fluid or WD-40 to reduce heat buildup and extend tool life. Avoid high-speed dry cutting, which can work-harden the surface and dull tooling faster.

In mill-finish condition, 7075 offers moderate corrosion resistance suitable for sheltered outdoor use. For prolonged exposure to moisture, salt spray, or marine environments, anodizing or applying a protective coating is strongly recommended. 7075 is less corrosion-resistant than 5052 or 6061 in bare form, so surface treatment is important for harsh conditions.

For light-duty brackets and shim stock, 2–3mm thickness is typically sufficient. The 4mm plates in this listing are well-suited for structural mounting plates, CNC prototype blanks, and parts that will be machined down to a final dimension. If your design calls for a thicker or thinner stock, check our other listings or contact us to confirm availability.

Yes. 7075 anodizes well and accepts both Type II (decorative) and Type III (hard anodize) processes. Powder coating is also compatible after proper surface prep (degreasing and etching). Anodizing is the preferred finish for parts requiring both corrosion protection and a clean, consistent appearance.

Yes. All 10 plates are cut to the same 100 × 100mm dimensions with a uniform 4mm thickness. Minor surface variations from the mill-finish process are normal and do not affect dimensional accuracy. If you require tighter tolerances or a specific surface finish, contact us before ordering.

Yes. 7075-T6 taps cleanly for metric and imperial threads. Its hardness means threads hold well under load without stripping as easily as softer alloys. Use a quality spiral-flute tap and cutting fluid for best results. For high-vibration applications, thread-locking compound or Helicoil inserts are recommended.