ArcelorMittal's E-Passivation® is an environmentally friendly, chromate-free passivation or temporary protection system. This surface treatment comprises a mineral (and organic) layer containing corrosion inhibitors. Passivation is applied by means of a continuous process on the metallic coating line. E-Passivation® is available on ArcelorMittal's wide range of metallic coated steels.
The essential role of E-Passivation® is to provide corrosion protection (resistance to metallic coating oxidation) during normal handling, transport and storage.
E-Passivation® complies with current European legislation banning the use of hazardous substances such as hexavalent chromium: the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment and the End-of-Life Vehicles directives.
E-Passivation® also complies with the chemical passivation described in the different European standards for metallic coated flat carbon steel.
Metallic coated steels with E-Passivation® can be used in a very wide range of applications for industrial markets:
E-Passivation® can be applied on all steel grades suitable for continuous metallic coating.
See the corresponding data sheets of the metallic coated steels.
ArcelorMittal offers E-Passivation® for different metallic coated steel substrates:
* The trademark is registered in the EU.
Different combinations of E-Passivation® with other surface treatments are available:
|E-Passivation®||E-Passivation® and Oiling||Phosphating and E-Passivation®||Phosphating, E-Passivation® and Oiling|
|Hot dip galvanised steel||N/A|
N/A = Not available
The table below gives an overview of the performance of E-Passivation® on hot dip coatings.
|Protection during transport and storage||Salt spray test corrosion resistance (1)||Hot dip galvanised steel||> 24 hours|
|Magnelis®||> 72 hours|
corrosion resistance (2)
|> 240 hours|
|Stack test (3)||> 8 weeks|
(1) Resistance to salt spray test according to EN ISO 9227 (evaluation: number of hours before maximum 5% white or black rust appears on the metallic coating)
(2) Resistance to humidity cabinet test according to EN ISO 6270-2 (evaluation: number of hours before maximum 1% white or black rust appears on the metallic coating)
(3) Resistance to stack test (evaluation: time before maximum 5% white or black rust appears on the metallic coating) (procedure: different sets of samples are piled up and a load of 10 kg is positioned on top of this pile. Deionised water is sprayed between two treated sheets at the start of the test and thereafter once a week. The stacked samples are stored indoors for 8 weeks at room temperature. Visual inspection of the surface is carried out weekly.)
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All details provided in the ArcelorMittal Flat Carbon Europe S.A. catalogue are for information purposes only. ArcelorMittal Flat Carbon Europe S.A. reserves the right to change its product range at any time without prior notice.