7075 Aluminium Sheet Metal Plate 8/10/12/15/20/25/30/40/50mm Thick Various Sizes

7075 contains zinc as its primary alloying element and achieves tensile strengths typically 40–60% higher than 6061. However, 6061 offers better weldability and corrosion resistance in bare form. Choose 7075 when maximum strength and machinability are the priority; choose 6061 when welding or outdoor exposure without coating is required.

Welding 7075 is generally not recommended. The alloy is susceptible to stress corrosion cracking and hot cracking in the heat-affected zone. For structural assemblies, mechanical fastening (bolts, rivets) or structural adhesives are the preferred joining methods.

Thickness selection depends on the load, span, and machining allowance your application requires. For tooling plates and jigs, 15–25mm is common. For structural brackets and gussets, 8–15mm typically suffices. For heavy-duty blocks or mold bases, 30–50mm provides the necessary rigidity. When in doubt, calculate the required section modulus for your load case before ordering.

7075 has moderate corrosion resistance in bare form — lower than 6061 or 5052. For outdoor or humid environments, anodizing or applying a protective coating is strongly recommended. In controlled indoor workshop or industrial environments, bare 7075 performs reliably for most applications.

7075-T6 machines well with carbide or HSS tooling. Use high spindle speeds (typically 3,000–8,000 RPM for milling depending on cutter diameter), moderate feed rates, and cutting fluid or compressed air for chip evacuation. Avoid rubbing cuts — maintain a consistent chip load to prevent work hardening at the cutting edge.

Yes. 7075 anodizes well and produces a durable, corrosion-resistant oxide layer. Hard anodizing (Type III) is commonly used for wear-resistant surfaces on tooling and aerospace components. Note that anodizing adds a thin layer (typically 0.01–0.05mm per side) that may affect tight-tolerance fits — account for this in your machined dimensions.

Use the Thickness and Width × Length dropdowns above to select your required combination. Each variant corresponds to a specific plate size. If you need a size not listed or require custom cutting, contact us to confirm availability before placing your order.