Semi-Hard Anodising

The semi-hard anodising process was devised to satisfy the requirements for a hard surface finish combined with good colour options. Semi-hard anodising provides increased hardness, good adhesion, electrical insulation, heat resistance and increased corrosion resistance. Semi-hard anodising will usually result in a slightly lower surface finish to that of the original component but can be more easily dyed than the full hard anodised finish, giving a greater range of available colours.

Maximum Size Criteria

*The maximum sizes for all other colours should be discussed with us in advance as our dye tank sizes vary.

Coating Thickness

Sealing

• Cold Seal
• Hot Water Seal
• Nickel Acetate Seal – for increased corrosion protection
• Sodium Dichromate – produces a dark green finish and is suitable for marine applications

Colour Dyes

Please note that these colours are meant as a guide and no guarantee can be made for a match between this online colour swab and the final colour. Also, due to the varying nature of alloys and dyes, we cannot guarantee colour consistency between orders over time or even across large batches.