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

• Gold
• Yellow
• Aluminium Orange
• Aluminium Bronze
• Pink
• Aluminium Fiery Red
• Aluminium Bordeaux
• Aluminium Violet
• Blue
• Aluminium Green
• Aluminium Grey
• Deep Black
• Olive Drab (for military applications)