Corrosion Passivator

Primer Zinc C5

nC Corrosion Passivator – Primer Zinc C5 is a metal treatment liquid. It forms an active galvanic anti-corrosion layer in the metal.

The metallic zinc powder acts as a sacrificial anode. Corrosive influences slowly transform the layer into an impermeable zinc oxide layer that remains effective even if the paint is scratched.

The combination of high purity binder and zinc ensures high mechanical resilience of the paint film while providing lasting active corrosion protection when the paint surface is damaged. Can be painted over. Protects up to 10 years in saltwater environments.

Important product features

  • Extremely abrasion resistant due to chemical bonding.
  • Remains active even after scratches or dents.
  • Resistant to electric welding.

Technical Information

Suitable for

New or blasted metal Sa1.
Protect parts to be welded in.
Surfaces exposed to heavy stress.


Remove mud and loose rust or paint.
Sand or blast metal to Sa1 roughness.

Application method

Brush, roller or spray.

Layer thickness (WFT)

50 micron


Low consumption 230 gram/m2.

Drying time

Fast drying, repaintable after 15 minutes.


Yes, perfect undercoat for all paint systems.


Long life span between 10 to 15 years. Up to 10 years in saltwater environments.


Storage between 5°C and 35°C.
Store 1 year in tightly closed container.


Adhesion DIN EN ISO 2409: Diamond test 0.
Salt spray test DIN EN ISO 9227: No rust.
VDA exchange test 621-415: After 4000 hours no defects to applied alloy.


Product Data Sheet (PDS)

Brochure Corrosion Passivator

nC Corrosion Passivator Brochure_English

Can be painted after only 15 minutes

After treatment with nC Primer Zinc C5, the surface can be treated with any coating suitable for the metal or nC Corrosion Passivator – Cold Alloy, nC Corrosion Passivator – HCR or nC ProTherm.

Actively protects against scratches

Actively passivates where minor damage occurs eliminating the need for spot repair in most cases.

Strong chemical adhesion

Suitable as a substrate for traditional paint systems or a coating developed by nC for harsh conditions.


Discover how our nC Corrosion Passivator products offer a solution to our customers.

Do not hesitate to call us.

Contact us and find out what we can do for you.