ISO 12944-5:2019
Paints and varnishes — Corrosion protection of steel structures by protective paint systems — Part 5: Protective paint systems
This document describes the types of paint and paint system commonly used for corrosion protection of steel structures.
It also gives guidelines for the selection of paint systems available for different environments (see ISO 12944‑2) except for corrosivity category CX and category Im4 as defined in ISO 12944‑2 and different surface preparation grades (see ISO 12944‑4), and the durability grade to be expected (see ISO 12944‑1).
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Classification of environments
5 New work and refurbishment
5.1 New work and total refurbishment
5.2 Partial refurbishment
6 Types of paint
6.1 General
6.2 Examples of generic type of paints
6.2.1 Alkyd paints (AK)
6.2.2 Acrylic paints (AY)
6.2.3 Ethyl silicate paints (ESI)
6.2.4 Paints for epoxy coatings (EP)
6.2.5 Paints for polyurethane coatings (PUR)
6.2.6 Paints for polyaspartic coatings (PAS)
6.2.7 Paints for polysiloxane coatings (PS)
7 Paint systems
7.1 Priming coats and type of primers
7.1.1 General
7.1.2 Types of primer
7.2 Subsequent coats
7.2.1 General
7.2.2 Intermediate coats
7.2.3 Topcoats
7.3 Dry film thickness
7.4 Durability
7.5 Shop and site application
8 Tables for protective paint systems for C2 to C5, Im1, Im2 and Im3
8.1 Reading the tables
8.2 Parameters influencing durability
8.3 Designation of the paint systems listed
8.4 Guidelines for selecting the appropriate paint system
Annex A (normative) Abbreviated terms and descriptions
Annex B (normative) Minimum requirements for corrosion protection systems
Annex C (informative) Paint systems for carbon steel
Annex D (informative) Paint systems on hot dip galvanized steel
Annex E (informative) Paint systems on thermal-sprayed metallic coatings
Annex F (informative) Pre-fabrication primers
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Classification of environments
5 New work and refurbishment
5.1 New work and total refurbishment
5.2 Partial refurbishment
6 Types of paint
6.1 General
6.2 Examples of generic type of paints
6.2.1 Alkyd paints (AK)
6.2.2 Acrylic paints (AY)
6.2.3 Ethyl silicate paints (ESI)
6.2.4 Paints for epoxy coatings (EP)
6.2.5 Paints for polyurethane coatings (PUR)
6.2.6 Paints for polyaspartic coatings (PAS)
6.2.7 Paints for polysiloxane coatings (PS)
7 Paint systems
7.1 Priming coats and type of primers
7.1.1 General
7.1.2 Types of primer
7.2 Subsequent coats
7.2.1 General
7.2.2 Intermediate coats
7.2.3 Topcoats
7.3 Dry film thickness
7.4 Durability
7.5 Shop and site application
8 Tables for protective paint systems for C2 to C5, Im1, Im2 and Im3
8.1 Reading the tables
8.2 Parameters influencing durability
8.3 Designation of the paint systems listed
8.4 Guidelines for selecting the appropriate paint system
Annex A (normative) Abbreviated terms and descriptions
Annex B (normative) Minimum requirements for corrosion protection systems
Annex C (informative) Paint systems for carbon steel
Annex D (informative) Paint systems on hot dip galvanized steel
Annex E (informative) Paint systems on thermal-sprayed metallic coatings
Annex F (informative) Pre-fabrication primers
Bibliography