Hard anodising of aluminium

Steel strength, lightweight of aluminum

Process description

Hard anodised coatings on aluminium and its alloys are formed during the process of electrolytic oxidation in acid electrolytes, under accurately adjusted conditions of temperature and electric current. The coating is formed in such a way, that half of its thickness penetrates into the base material and the other half builds up externally.

Result

When compared to conventional anodised films, coatings formed during the process of hard anodising are much thicker, which demonstrate much better resistance to wear. Depending on the type and condition of the base material, the achievable thickness of hard anodised films may range from 25 µm to 250 µm.

Colours of hard anodised coatings depend on types of the base material and thickness of the built-up film. Generally, the colours include various shades of brown and grey. With very thick coatings, it is also possible to achieve black colour of the film.

PROPERTIES OF HARD ANODISED COATINGS
• Very high resistance to wear and abrasion.
• Perfect resistance to corrosion (1000 to 1500 h in a saline chamber).
• Excellent hardness (380-550 HV 0.025).
• Optimum antifriction properties.
• High resistance to electric breakdown (1500 V at the film thickness of 50 µm).
• Resistance to high temperatures (up to 2000ºC at short-term exposure).
• Excellent properties of thermal insulation (1/10 to 1/30 of thermal conductivity demonstrated by the base material).

Subject to the process:

The properties and appearance of the oxide coating mainly depend on the base material (type of alloy and degree of aluminium hardening – table), the method of manufacturing and preperation of the product surface.

NOTE: If the alloy type and condition are incorrectly defined, the components may be damaged.

Specialised industries:

Hard anodising is often used in specialised industries:
• Pneumatic and hydraulic cylinders
• Pistons and injection moulds
• Valves, nozzles and belt pulleys
• Chirurgical instruments
• Toothed transmission gears
• Heating plates
• Household equipment
• Automotive industry
• Aviation industry

ORDER PLACEMENT AND RETURNS

To place an order, please complete the following documents and send them via e-mail to handlowy@anodal.pl or bring it personally to Anodal’s office. The office is open from Monday to Friday from 8 a.m. to 4 p.m. Our consultants will help in case of problems with completing the order.

Please prepare:

• Technical drawings (PDF with specification of dimensions provided with tolerances)
• Service order according to the order form with the following information: designation of fixing (contact) points, aluminium grade and degree of hardening, surface area calculated from the 3D development, thickness of the anodised coating,
• Other information that may be important, such as.: standards and codes that must be fulfilled, requirement to have the anodised coating sealed

Note! Components handed over to ANODAL must by right after manufacturing, with no preliminary treatment.

If components are to be sent by regular mail or courier:
• Send a copy of the order via e-mail to the address handlowy@anodal.pl
• Attach all necessary technical drawings of the components to the e-mail
• Place the legible name of your company in a well-visible place on the packing

While sending back the ready products:
• Small packages are sent back by courier service at the expense of ANODAL, otherwise the postage expenses are added to the invoice,
• Please check the integrity and content of the package in witness of the courier, in case of damage make up a relevant report,
• The Stock Issue Confirmation Note (WZ), along with the VAT invoice, are attached to the package and placed in the plastic pocket along with the Bill of Lading (B/L),
• Should the invoice be sent to an address different from the destination address of the package, please provide such information in the Service Order

Would you like to get samples of colours and surface finishing?

Please fill in the form below and we shall send you the catalogue via regular mail

Please contact our consultant:

 

  • ANODAL OFFICE:
    Open 8 a.m. – 4 p.m.
    Ul. Matuszewska 14, Hall D2, Entrance E
    03-876 Warsaw

 

  • SALES, ORDERS:
    E-mail: handlowy@anodal.pl

 

  • DETAILS – SMALL ELEMENTS:
    Mobile: 516-060-391
    Tel.: 22-813-08-35 ext.: 1
  • PROFILES:
    Mobile: 508-312-583
    Tel.: 22-813-08-35 ext.: 2

 

The Data Controller of your personal data, i.e. the entity deciding on the purposes and methods of their processing, is the company operating under the business name ANODAL SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ (detailed data in the Privacy Policy). Please be advised that providing personal data is necessary to contact you, and that you have the right to access your personal data, change it (including updating), as well as other rights described in the Privacy Policy.

Table
PN Alloy Shiny Coloured Hard Protection Alloy composition
A1 1050A excellent excellent excellent excellent Al99.5
1200 very good very good excellent excellent Al99.0
2007 poor poor very good good Al 4.0Cu 1.2Pb 1.1Mg 0.8Mn
2011 poor poor very good good Al 5.5Cu 0.4Bi 0.4Pb
2014 poor poor very good good Al 4.5Cu 0.9Si 0.8Mn 0.5Mg
2014A poor poor very good good Al 4.5Cu 0.8Mn 0.7Si 0.5Mg
PA6 2017A poor poor very good good Al 4.0Cu 0.7Mn 0.7Mg 0.5Si
PA7 2024 poor poor very good good Al 4.4Cu 1.5Mg 0.6Mn
2030 poor poor very good good Al 3.9Cu 1.2Pb 0.9Mg 0.6Mn
3003 good very good very good very good Al 1.3Mn Cu
3004 good very good very good very good Al 1.3Mn 1.1Mg
3005 good very good very good very good Al 1.3Mn 0.4Mg
3103 good very good very good very good Al 1.2Mn
3105 good very good very good very good Al 0.6Mn 0.5Mg
PA43 5005 excellent excellent excellent excellent Al 0.8Mg
5005A excellent excellent excellent excellent Al 0.9Mg
5049 very good very good excellent excellent Al 2.1Mg 0.8Mn
5052 very good very good excellent excellent Al 2.5Mg Cr
PA13 5083 good very good excellent excellent Al 4.5Mg 0.7Mn Cr
5086 good very good excellent excellent Al 4.0Mg 0.5Mn Cr
5154A good very good excellent excellent Al 3.5Mg Mn Cr
5182 good very good excellent excellent Al 4.5Mg 0.3Mn
PA2 5251 very good very good excellent excellent Al 2.0Mg 0.3Mn
5454 very good very good excellent excellent Al 2.7Mg 0.8Mn Cr
PA11 5754 good very good excellent excellent Al 3.1Mg Mn Cr
6005A good very good very good excellent Al 0.6Mg 0.7Si Mn Cr
6016 very good excellent excellent excellent Al Si 1.0-1.5 Mg 0.25-0.6
PA38 6060 very good excellent excellent excellent Al 0.5Mg 0.5Si Fe
6061 good very good very good excellent Al 1.0Mg 0.6Si Cu Cr
PA38 6063 very good excellent excellent excellent Al 0.7Mg 0.4Si
PA4 6082 good very good very good excellent Al 0.9Mg 1.0Si 0.7 Mn
6106 good very good very good excellent Al 0.6Mg 0.4Si Mn
7010 poor poor good very good Al 6.2Zn 2.4Mg 1.8Cu Zr
PA47 7020 poor good very good very good Al 4.5Zn 1.2Mg Mn Cr Zr
PA9 7075 poor poor good very good Al 5.6Zn 2.5Mg 1.6Cu Cr