Anti-Corrosion Protective Coating System (C5 Very High) - For High Corrosivity Environments

Anti-Corrosion Protective Coating System for the painting of steel to protect against corrosion in C5 basic atmospheric corrosivity environments as per ISO 12944.

Systems are also available for C2, C3, and C4 corrosivity environments (ranging from Medium, High and Very High - specified separately).

Full system includes Primer, Undercoat and Topcoat.

If you require an Intumescent System, see 'Intumescent Fire Protection' and choose the system you require. If you would like specific information or advice on specifying a system for your project please contact Hempel.    

Selecting the correct paint system for protection against corrosion requires a variety of factors to be taken into account to ensure that the most economical and best technical solution is achieved. For each project the most important factors to consider before selecting a protective coating are:

• Environmental Corrosivity (see table in image 2 above or Hempel ISO 12944 Brochure attached).
• Type of protected surface - Designing a coating system normally involves dealing with construction materials such as steel, hot dipped galvanized steel, spray-metallised steel, aluminium or stainless steel. The surface preparation, the paint products used (particularly the primer) and the total system thickness will depend mainly on the construction material to be protected.
• The durability required for a paint system. The lifetime of a paint system is assumed to be the period of time which passes until maintenance is required for the first time after application. ISO 12944 specifies a range of four time frames to categorize durability (see table in image 3 above or Hempel ISO 12944 Brochure attached). 
• Planning the paint application process. The building schedule and the various stages of construction of any particular project determine how and when the paint system needs to be applied. Consideration needs to be given to materials at their prefabrication stage, when components are being prefabricated both off and on-site and when building stages are complete. It is necessary to plan the job so that surface preparation and the drying/curing time of paint products in relation to temperature and humidity are considered. Also if one stage of construction takes place in a protected workshop environment and the next stage then takes place on site, recoating intervals must also be taken into account.