Colouring of aluminium
A wide range of colors
We dye aluminium using two methods: chemical and electrochemical. Chemical colouring of aluminium coatings consists in immersing them in a specific dye for a defined period of time, depending on the desired colour intensity. The dye is absorbed into the oxide layer, creating a deep colour effect on aluminium. Electrochemical dying is much more complicated and requires the use of several technologies.
It is the method that enables to achieve colour films with many shades of brown and the colour that imitates appearance of stainless steel. The colours achieved by means of electrochemical process are very resistant to the effect of light. Films applied through electrochemical process are perfectly suitable for outdoor applications, due to their high resistance to corrosion.
Coatings subjected to colourisation by means of chemical processes perfectly prove themselves in applications, where decorative properties are crucial factors. The applicability of coatings for outdoor applications depends on such factors, as the base material, thickness of the applied film and the selected colour. One has to be aware that shades of final colours may differ for various grades of base aluminium.
In mass production, we create custom-made colour. For further information, please contact our sales department.
The colour of the oxide coating on aluminium depends on the type of input material. The importance lies in the type and content of alloying elements in the input material, as well as the conditions for obtaining the product.
We carry out colourization of aluminium products by means of two methods, with regard to the base material and the desired final effect:
Use of high-alloy materials as base metals makes the applied coatings more or less grey. Improper homogenization of alloys may lead to formation of stains and various discolorations on the metal surface.
Thickness of oxygen layers formed on the aluminium surface depends on the conditions of the anodising process, as well as on composition and structure of the base material – table. For low-alloy materials and workpieces made of pure aluminium the possible thickness of oxidised layers may vary from 5 to 25 μm, depending on the customer’s needs.
The hardness of coatings substantially depends on the parameters of the anodising process. For conventional coatings, the hardness ranges from 100 to 300 HV 0.05.
There is the rule that colourisation is the most efficient for coating applied onto pure aluminium (1xxx) or low-alloy materials (5xxx, 6xxx). On the other hand, alloys with high content of copper (2xxx) or zinc (7xxx) are quite difficult for application of colours. Cast alloys with the content of silicon above 3% are not suitable for anodising at all.
To place an order, please complete the following documents and send them via e-mail to firstname.lastname@example.org 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.
• Technical drawings (PDF) (for sections bars – cross-sections with information about the length)
• Service order according to the order form with the following information: aluminium grade and degree of hardening, designation of fixing (contact) points,
• Other information that may be important, such as.: standards and codes that must be fulfilled, perimeter length for section bars, surface area calculated from the 3D development
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 email@example.com
• 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
|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|
|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|