Passivation & chromating

Passivation and chromating is the process of creating non-metallic protective coatings on a metallic material to prevent oxygen corrosion. BWB offers passivation of aluminium, stainless steel, as well as previously galvanized steel (blue passivation).

Market specific certifications

Passivations and chromatings are very popular in the electronics industry because of the low surface resistance. They are used in the aerospace industry because of their excellent corrosion protection and serve as ideal adhesion primers for paints.
BWB meets the uncompromising quality requirements of the aerospace industry when chromating aluminium, as confirmed by the EN 9100 and Nadcap certifications.

Conversion coatings on aluminium

Chromating

Bonderite M-CR 1200 AERO, Bonderite M-CR 1200 S AERO and M-CR Alumigold are processes for chromating aluminium components in the aerospace industry. They produce robust and durable anti-corrosion coatings that withstand the high demands of aviation.

Cr(VI)-free passivation

SurTec 650 is a chromium(III)-containing passivation which meets the complex requirement profile of aviation. SurTec 650 passivation has low surface resistance, high corrosion protection and excellent paint adhesion and meets the requirements of the REACH regulation.

Chromium-free passivation

With Bonderite 160 and Bonderite 400, BWB offers two chromium-free passivations for aluminium. These are environmentally friendly alternatives to conventional chromium-containing treatment processes.

Performance overview passivations

Locations

800 x 400 x 500 mm

950 x 450 x 850 mm

1000 x 600 x 900 mm

920 x 400 x 1100 mm

Locations

950 x 450 x 850 mm

750 x 500 x 900 mm

3100 x 400 x 1100 mm

Locations

2000 x 500 x 1500 mm

5000 x 8000 x 1800 mm

3100 x 400 x 1100 mm

Location

5000 x 800 x 1800 mm

Location

3100 x 400 x 1100 mm

Locations

3400 x 700 x 1400 mm

1400 x 560 x 800 mm

3100 x 400 x 1100 mm

Location

1400 x 560 x 800 mm

Locations

450 x 300 x 450 mm

1400 x 560 x 800 mm

1100 x 550 x 700 mm

Location

450 x 300 x 450 mm

Location

450 x 300 x 450 mm

Locations

450 x 300 x 450 mm

3700 x 700 x 1000 mm

Location

1000 x 350 x 700 mm

Product data sheets

Chromating & passivation of aluminium

Stainless steel passivation