Hard Anodizing

Hard anodizing thickens the oxide layer into a dense, ceramic-like coating that approaches the wear resistance of hardened steel while staying lightweight. It is used on sliding surfaces, valve bodies, pneumatic components and any aluminium part that rubs against something else.

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Capacidades

O que fazemos

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Layer thickness 25 to 50 µm

Layer thickness 25 to 50 µm

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Surface hardness up to 500 HV

Surface hardness up to 500 HV

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Excellent wear and galling resistance

Excellent wear and galling resistance

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Better electrical insulation than Type II

Better electrical insulation than Type II

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Available in black and dark tones

Available in black and dark tones

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Suitable

Suitable for pneumatic and hydraulic parts

Materiais

Materiais

Aluminium 6061
Aluminium 7075
Aluminium 2024
Cast and forged aluminium
Especificações

Especificações principais

EspecificaçãoDetalhes
Thickness25–50 µm
Hardnessup to 500 HV
ColourBlack, dark grey, natural
Dielectric strengthHigh, insulating
GrowthApproximately half the layer thickness
Lead time4–7 working days
Acabamentos

Acabamentos superficiais e pós-processamento

Sealed or unsealed depending on application

Sealed or unsealed depending on application

Machined after coating for critical fits

Machined after coating for critical fits

PTFE impregnation for low friction

PTFE impregnation for low friction

FAQ

Perguntas frequentes

Where is hard anodizing essential?

On aluminium surfaces that slide, rotate or seal: cylinder bores, valve spools, wear plates and guides. Without it, soft aluminium galls and wears quickly.

Can hard anodized parts be machined afterwards?

Yes, but only on masked or uncoated areas, or by diamond grinding. Because the coating is very hard, we plan the process so critical fits are either masked or finished after coating.

Is it suitable for food contact?

Sealed hard anodizing is used in food processing equipment, but you should confirm the specific application against the relevant standard before production.

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