CONVERSION LAYERS ON ALUMINIUM

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Aluminium Passivations

SurTec 650
Product Info
chromitAL® TCP is a passivation based on trivalent chromium. On aluminium and it´s alloys a slightly iridescent and visible layer is produced. The layer is suitable for subsequent painting, but it also exhibits an excellent bare protection substituting hexavalent chromium processes. The corrosion protection of (unsealed) anodising layers is increased significantly by applying SurTec 650 chromitAL®. SurTec 650 chromitAL® was honored by the Innovation Award "Initiative Mittelstand". IMDS Id. 30429267.
Also available: SurTec 650 C for corrosion protection on Cu-containing alloys and SurTec 650 V for colourful and visible layers.
SurTec 650 RTU
Product Info
Hexavalent chromium free passivation for aluminium, based on trivalent chromium, ready to use solution for spray and wipe application, viscous adjusted solution for better and longer moistening, creates excellent bare corrosion protection comparable to hexavalent passivations.
SurTec 650 C
Product Info
Hexavalent chromium free passivation for aluminium, based on trivalent chromium, improved corrosion protection on 2xxx and 7xxx alloys, easy to handle in immersion and spray application, produces an iridescent, blue to grey and visible layer.
SurTec 650 V
Product Info
Hexavalent chromium free passivation for aluminium, based on trivalent chromium, produces colourful and visible layers which are blue-grey to yellow iridescent on 2xxx and 7xxx alloys, excellent bare corrosion protection comparable to hexavalent passivations.
SurTec 650 Retouche
Product Info
Touch up pen containing trivalent passivation solution for manual application, suited to repair passivated surfaces after mechanical violation (e.g. scratches), produces an excellent corrosion resistance, comparable to hexavalent processes; the produced passivation layer very well is suited as pretreatment before laquering, powder coating and gluing.
SurTec 651
Product Info, Qualicoat Certificate
Powdery, Cr(VI)-free trivalent pretreatment for aluminium. Particularly suitable for the pretreatment before laquering, powder coating and glueing and also applicable on alloyed and casted aluminium. It is easy to handle in immersion, spray and wipe application and produces an iridescent, faintly blue to tan and visible layer. The product is heat resistant up to 100 °C with minimal loss in corrosion resistance.
SurTec 641
Product Info,Qualicoat Certificate, Confirmation for use in foodstuffs
Conversion coating, bi-components process: SurTec 641 A and SurTec 641 B, used as pre-treatment before painting, free of chromium, free of phosphates, gives an excellent protection of the treated metals and guarantees a perfect adhesion of paint, suited for aluminium and zinc die cast, applicable in spray or immersion process.
SurTec 653
Product Info
Liquid, colourless chromate for aluminium, produces a colourless layer with excellent protection against corrosion, guarantees a strong paint adhesion, after chromating the aluminium parts can be stored for a long period prior to painting.
SurTec 655
Product Info
Liquid, one-shot yellow chromate for aluminium and its alloys, forms light to strongly yellow layers with excellent adhesion, in immersion, spray and wipe processes.
SurTec 657
Product Info
Liquid, green chromate for aluminium and its alloys, forms uniform light to mate green coatings with excellent adhesion in immersion and spray processes.

CHROMIUM(VI)-FREE PASSIVATIONS FOR ZINC PLATED SURFACES

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Trivalent Passivations
Survey: Trivalent Passivations with Good Corrosion Protection

SurTec 660
Product Info
Trivalent Blue Passivation without hexavalent chromium or oxidizing agents, exceeds corrosion protection standards (neutral salt spray), produces coatings with a clear blue colour, the passivation layer is easily inkable with organic dyes, long service life (see: SurTec Technical Letter 4), can be determined analytically and adjusted. IMDS No. 3641289.
SurTec 662
Product Info
Trivalent, temper resistant blue passivation without any sediment; corrosion resistant coatings of intense blue colour. Long lifetime, especially with inhibitor SurTec 660 A. IMDS No. 900924.
SurTec 664
Product Info
Trivalent Blue Passivation without traces of hexavalent chromium or oxidizing agents, contains cobalt to improve the corrosion resistance, exceeds by far the corrosion protection standards (neutral salt spray), produces coatings with a clear blue colour, long service life (see: SurTec Technical Letter 4), can be determined analytically and adjusted. IMDS No. 900924.
SurTec 665
Product Info
Economic liquid trivalent blue passivation with little sediment.
SurTec 666
Product Info
Liquid trivalent, fluoride-free heat resistant blue passivation without sediment. Long service life, especially with the inhibitor SurTec 660 A . IMDS No. 900924.
SurTec 667
Product Info
Liquid, high performance blue passivation without sediment, free of chromium(VI) and oxidising agents, surpasses significantly the corrosion protection standards for blue passivated parts also in barrel application, produces coatings with an intensive blue colour even at short immersion times, long service-life. IMDS No. 900924.
SurTec 668
Product Info
Liquid trivalent blue passivation without hexavalent chromium or oxidising agents, product contains cobalt to improve the corrosion resistance, produces passivation layers with intensive blue colour, even at shorter application times, long service-life (see: SurTec Technical Letter 4), can easily be analysed and replenished.
SurTec 669
Product Info
Liquid, trivalent passivation with medium layer thickness and very good corrosion protection, applicable at room temperature, produces bluish to yellowish-brown passivation layers.
SurTec 670
Product Info
Chromium(VI)-free high performance passivation with very good corrosion resistance, suitable for galvanic zinc deposits, applicable at room temperature, suited for rack and barrel application, produces clear, slightly iridescent passivation layers, layer fulfils all requirements of ELV, RoHS and WEEE when following the recommended process sequence. IMDS No. 10649640.
SurTec 678
Product Info
Trivalent, very high concentrated transparent passivationfor zinc-nickel alloy, produces coatings with a bluish to iridescent colour, easy to operate and maintain, can be determined analytically and adjusted.
Please have a look at: SurTec 66x – Control of Trivalent Blue Passivations

Chromitings – Thick Trivalent Passivations

SurTec 680
Product Info

Chromiting without hexavalent chromium; produces pale iridescent green coatings, which meet the standards for yellow chromates in rack and even in barrel applications. Good heat resistance. IMDS No. 900896.
New: Selective removal of iron with ion exchange resin SurTec 680 IAT
New: Interactive Calculations for Chromiting Processes

SurTec 680 LC
Product Info
Chromiting without hexavalent chromium; produces pale iridescent green coatings, which meet the standards for yellow chromates in rack and even in barrel applications. Approx. 1g/l Cobalt in the bath. IMDS No. 900896.
SurTec 680 S
Product Info
Stabilisation additive for the last rinse after the Chromiting process SurTec 680 und SurTec 680 LC.
SurTec 680 Y
Product Info
Liquid yellow Chromiting process, yellow converter as an additive for thick layer passivation SurTec 680 LC, free from hexavalent chromium, compliant with ELV and RoHS, excellent corrosion protection, forms yellow passivation layers comparable to hexavalent chromating processes, especially suitable for zinc layers from alkaline cyanide-free electrolytes.
SurTec 690
Product Info
Hexavalent chromium free black passivation for zinc plating, provides a black passivate conversion coating on alkaline zinc, based on chromium(III). Produces layers of beautiful and uniform black appearance, superior corrosion protection, even without sealer or finishing solution. Easy waste water treatment, usable with conventional equipment. IMDS No. 63172992.
SurTec 544
Product Info
Finishing solution based on trivalent chromium, free of hexavalent chromium. Improves appearance and corrosion protection of trivalent black passivations, contains no organic polymers, thus easy to strip from racks and parts in conventional pre-treatments. Produces glossy layers which are dry to the touch. IMDS No. 63172992.
SurTec 691
Product Info
Hexavalent chromium free black passivation for Zinc and Zinc/Iron based on chromium(III) for rack and barrel application, produces black passivation layers on top of alkaline or acid zinc and on zinc/iron, high concentrated make-up solution, best results in corrosion protection and appearance can be achieved with subsequent sealer SurTec 558 Black or SurTec 555 S, ready to use directly after make-up.
SurTec 695
Product Info
Trivalent black Chromiting, produces jet-black chromium(VI)-free layers on zinc-iron alloys, good corrosion protection, especially after heat treatment. IMDS No. 6854343.
SurTec 696
Product Info
Chromium(VI)-free black passivation based on chromium(III) for Zinc/Nickel, suited for rack and barrel application. Produces uniform, good-looking, black surfaces, for electroplated zinc-nickel layers about 12-15 % nickel. Very high corrosion resistance with subsequent sealing, also after thermal treatment at 120 °C for 24 h, low working temperature (22-30 °C). Passivation with little abrasion, very long service time, high adhesive and scratching resistance. IMDS-Nummer: 1223017.

Iron Inhibitor for Trivalent Blue Passivations

SurTec 660 A
Product Info
Iron inhibitor to combine with all above mentioned blue passivations. Increases the service life dramatically, even with high iron load.

CHROMIUM(VI)-FREE PASSIVATIONS FOR PHOSPHATE LAYERS

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SurTec 580
Product Info
Liquid, trivalent chromium passivation, ChromiPhos, as post-treatment for phosphatings before lacquer finishing, intensifies the phosphate layer by filling the pores, causes an excellent lacquer adhesion, improves the corrosion protection and prevents underfilm corrosion.
SurTec 581
Product Info
Chromium-free passivation for post-treatment of phosphate layers before painting, prevents blistering of the paint, fills pores of the phosphate layer and enhances a good laquer adhesion, the slightly acidic passivation has a buffering effect and stabilises the condition on the surface, promotes good adhesion and prevents underfilm corrosion.
SurTec 585
Product Info
Powdery reactive soap, excellent lubricant, for pipes, bars, screws, nuts, etc., before mechanical deformation, enhances the deforming process, prevents tools from damage, protects the surface from corrosion, decreases the amount of scrap.

CHROMATES IN YELLOW, OLIVE GREEN AND BLACK

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Hexavalent Yellow Chromates

SurTec 656
Product Info
Liquid yellow chromating which generates conversion layers with good adhesion and corrosion protection properties on aluminium and zinced steel surfaces. It can be applied in immersion as well as in spray process.The product fulfils all appropriate quality requirements.
SurTec 656 A
Product Info
Additiv for pH-value adjustment of the yellow chromating. The product is especially attuned to the yellow chromating and ensures extremely long service life of the bath.
SurTec 671
Product Info
Highly concentrated yellow chromate on nitrate base with very good corrosion resistance. For zinc of all electrolytes, also in continuous lines and on zinc dye cast. IMDS No. 899343.
SurTec 676
Product Info
Yellow chromate on mixed acid base with very high corrosion resistance. For zinc of all electrolytes, highly wipe proof also on bright chloride zinc. IMDS No. 899343.

Hexavalent Green Chromates

SurTec 657
Product Info
Liquid green chromating which generates conversion layers with good adhesion and corrosion protection properties on aluminium and zinced steel surfaces. It can be applied in immersion as well as in spray process. The product fulfils all appropriate quality requirements.
SurTec 657 A
Product Info
Activator for green chromating to control the weight of the layer. The product is especially attuned to the green chromating and ensures extremely long service life of the bath.

Hexavalent Black Chromates

SurTec 693
Product Info
Highly economic acetic acid and silver containing black chromate, consisting of three parts, produces scratch resistant, brilliant, uniform black layers with very good corrosion protection.

Hexavalent Black Chromates for Zinc Alloys

SurTec 698
Product Info
Silver-free black chromate for zinc-iron layers, produces – especially together with post dip SurTec 698 N – deep black and highly corrosion resistant coatings, even after tempering. IMDS No. 900844.

Hexavalent Transparent Chromates

SurTec 653
Product Info
Liquid transparent chromating which generates conversion layers with good adhesion and corrosion protection properties on aluminium and zinced steel surfaces. It can be applied in immersion as well as in spray process. The product fulfils all appropriate quality requirements.