no image Dane Korozji Stali

DANE KOROZJI STALI

Service Environment Specification
No. Decorative Dry Film Thickness No. Functional Dry Film Thickness
Heated buildings clean atmosphere
C1 – Very Low
Corrosivity*
C1D* Macropoxy™ 400
Acrolon™ 7300 -
Gloss or Semi-Gloss
75
50
C1F* Macropoxy™ 400 75
Unheated buildings where
condensation may occur

C2 - Low
Corrosivity
C2D Macropoxy™ 400
Acrolon™ 7300 -
Gloss or Semi-Gloss
75
50
C2F** Macropoxy™ 400 120
External Urban
C3 - Medium
Corrosivity
C3D** Macropoxy™ 400
Acrolon™ 7300 -
Gloss or Semi-Gloss
125
55
C3F Macropoxy™ 400 180
Chemical or External Industrial
C4 - High
Corrosivity
C4D** Macropoxy™ 400
Acrolon™ 7300 -
Gloss or Semi-Gloss
190
60
C4F Macropoxy™ 400 240
External - High Industrial / Marine
C5 - Very High
Corrosivity
C5D** Macropoxy™ 400
Macropoxy™ 400
Acrolon™ 7300 -
Gloss or Semi-Gloss
125
125
50
C5F Macropoxy™ 400
Macropoxy™ 400
150
150
ISO 12944 Corrosivity Categories
*ISO 12944 does not offer systems for a C1 environment.
** Element Test Certificate Available

Contact Sherwin-Williams Technical Customer Support Team for details regarding Sherwin-Williams' ISO 12944 third-party laboratory testing programme.

Dry film thicknesses (d.f.t.) quoted are minimum nominal as defined by BS EN ISO 12944-5.

*In principle, corrosion protection is not required for corrosivity category C1. If, for aesthetic reasons, painting is necessary, a system intended for corrosivity category C2 (with a low durability) may be chosen. If unprotected steelwork destined for corrosivity category C1 is initially transported, stored temporarily or assembled in an exposed situation (for example, a C4/C5 coastal environment), corrosion will commence due to air-borne contaminants/salts and will continue even when the steelwork is moved to its final category C1 location. To avoid this problem, the steelwork should either be protected during site storage or given a suitable primer coat. The dry film thickness should be appropriate for the expected storage time and the severity of the storage environment.

Durability should be considered as the coating design life, where regular minor maintenance should be scheduled to achieve the required life to first major maintenance

Definitions of environment corrosive categories stated are according to ISO12944-2:2018.

Applicable to Macropoxy™ 400 where applied without a topcoat: All epoxy coatings will discolour and chalk progressively. Later application (site touch-up) may be noticeable. Macropoxy™ 400 is only available in primer shades.

Acrolon Finishes are available in a full range of shades, for alternative finishes please contact Sherwin-Williams Technical Customer Support

When determining the environmental category the specifier must consider that certain structures and/or locations can produce a micro climate which is more corrosive than that of the surrounding environment. This can be the case with open sided buildings including car parks.

For maintenance and/or alternative substrate specifications, please contact Sherwin-Williams Technical Customer Support Team.

Technical Customer Support team can be contacted by email or phone: Email: technicale@sherwin.com, Phone: 01204 556 457

The information detailed in this specification selector is liable to modification from time to time in the light of experience and of normal product development, and before using, customers are advised to check with Sherwin-Williams, quoting the reference number, to ensure that they possess the latest issue.


This Specification is specifically subject to the disclaimer which can be found at http://protectiveemea.sherwin-williams.com/Home/Disclaimer

October 2019 Issue 5

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+44 (0)1204 521771

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