This part of the EN ISO 12944 standard developed by the International Standards Organization (ISO) specifies laboratory test methods and test conditions for the evaluation of paint systems for corrosion protection of carbon steel structures. The test results are not intended to be used as definitive information to determine durability, but as an aid in the selection of suitable paint systems.
EN ISO 12944-6 covers protective paint systems designed for application to uncoated steel, hot dip galvanized steel according to ISO 1461 and steel surfaces with thermal spray metallic coatings according to ISO 2063‑1 and ISO 2063‑2.
ISO 12944-6 does not apply to protective paint systems for electroplated or painted steel. Media are considered for abrasiveness categories C12944 to C2 and Im2 to Im5 as defined in ISO 1‑3.
Unprotected steel can corrode in the atmosphere, water and soil, causing damage. Therefore, to prevent corrosion damage, steel structures are normally protected to withstand the corrosion stresses they will be subjected to during the service life required of the structure.
There are different ways to protect steel structures from corrosion. ISO 12944 (all parts) deals with the protection of various parts, with paint systems and covers, all the features that are important in providing adequate corrosion protection. Additional or other measures are possible, but require specific agreement between the parties involved.
To ensure effective protection of steel structures against corrosion, owners, planners, consultants, companies carrying out corrosion protection studies, protective coating inspectors and coating material manufacturers must have state-of-the-art knowledge. concisely about corrosion protection with paint systems. It is vital that such information is as complete, clear and easy to understand as possible in order to avoid difficulties and misunderstandings between parties involved in the practical application of conservation work.
ISO 12944 (all parts) aims to provide this information in the form of a set of instructions. Written for those with little technical knowledge. It is also assumed that the user of ISO 12944 (all parts) is familiar with other relevant International Standards, particularly those related to surface preparation.
While ISO 12944 (all parts) does not deal with financial and contractual questions, attention is drawn to the fact that failure to comply with the requirements and recommendations given in this document can lead to serious financial problems due to the significant consequences of inadequate corrosion protection.
This document provides a way to evaluate paint systems through laboratory testing in order to select the most suitable one. The cyclic aging test is introduced in this document. Currently used in C5 VH/H and C4 VH. In the case of C5 H and C4 VH, the test regimen that includes salt spray and condensation testing can still be used as an alternative to cyclic aging testing. In the future, salt spray and condensation tests are intended to be abolished as alternative tests for C5 H and C4 VH.
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