2pcs Aluminium Plate Sheet EN-AW 7075 T651 Grade 10mm Thick 70mm Wide 160mm Long

Both share the same base alloy and artificial aging process. The T651 designation adds a stress-relief step: the plate is stretched a controlled amount after solution heat treatment to relieve internal residual stresses. This makes T651 significantly more stable during machining — it is less likely to warp or spring when material is removed, which is critical for precision parts.

7075 has lower corrosion resistance than 6061 due to its high zinc content. For outdoor or marine environments, a protective finish such as hard anodizing or chromate conversion coating is strongly recommended. Without a finish, 7075 can develop surface oxidation over time in humid or salt-air conditions.

7075 is generally considered difficult to weld using conventional MIG or TIG processes — it is susceptible to hot cracking in the weld zone and the heat-affected zone loses much of its strength. For structural joining, mechanical fastening (bolts, rivets) or adhesive bonding is typically preferred. Consult a welding engineer if welding is required for your application.

Carbide end mills and drills are recommended for best results and tool life. HSS tooling also works well at lower speeds. Use cutting fluid or coolant to manage heat, especially when drilling. 7075 produces short, manageable chips and generally machines faster than 6061 at equivalent depths of cut.

7075-T651 offers roughly 1.5–2× the tensile and yield strength of 6061-T6, making it the better choice when weight savings and strength are both critical — such as in aerospace brackets, high-load jigs, or competition motorsport components. 6061 is easier to weld and more corrosion-resistant, so it remains preferred for general fabrication where extreme strength is not required.

The plates are cut to the stated dimensions within standard mill tolerances. Saw-cut edges may have minor burrs or slight roughness typical of industrial cutting. If your application requires tight edge tolerances or a smooth finish, a light cleanup pass on a mill or deburring with a file is recommended before final use.

Yes. 7075-T651 accepts both clear and hard anodizing. Hard anodizing is particularly effective for wear surfaces and adds meaningful corrosion protection. Note that anodizing adds a thin layer (typically 0.001″–0.002″ for hard anodize) to the surface, so account for this in your final dimensions if tight fits are required.