Which Alloys Suit It Best
The 2000 series of high-copper alloys can be anodised but the finish is not as consistent as with the above series, and should be confirmed with the supplier.
Typical Coating Thickness
The typical coating thickness for a sulphuric acid anodising process is 5-25 micron. This thin layer of coating is sufficient not to cause excessive dimensional change, yet is sufficiently thick to provide adequate protection to the aluminium substrate. As the anodising process builds the layer outward from the bore as well as inward it is essential that close tolerance bores and mating faces are allowed for in the design.
Moderate Corrosion and Wear Requirements
Moderate Corrosion and Wear Resistance For more on this, take a look at www.poeton.co.uk/surface-treatments/anodising/sulphuric-acid-anodising/.
Sulphuric acid anodising offers moderate corrosion resistance and wear resistance. This surface finish is suitable for average industrial applications. For very harsh environments or applications that require high wear resistance, hard anodising would be more suitable. uk/surface-treatments/anodising/sulphuric-acid-anodising/).
Decorative or Dyed Finishes
Sulphuric acid anodising can also be used to produce a number of decorative or dyed finishes. The anodized surface is porous, which allows the dye to penetrate the surface of the coating prior to sealing. This creates a consistent, repeatable colour throughout the coating.
Surface Condition Before Treatment
Parts should be delivered to us clean and free from deep scratches or marks. Any surface marks from machining should be of a depth that will not show up after anodising. uk/guidance/){rel=”nofollow”}.
Match the process to the requirements of the part to achieve the finish that will give the best service without over-specification.
