A customer must consider several key aspects, including testing according to ISO 12944. These tests provide crucial information on the corrosion resistance and durability of the coating.
Here are 11 important points to keep in mind:
Environmental corrosivity classification: ISO 12944 specifies different environmental corrosivity classes, from C1 to C5, ranging from clean indoor environments to highly corrosive marine environments. Make sure the paint selected is rated to withstand the environment in which it will be used.
Coating thickness: The standard establishes minimum zinc coating thickness requirements for each corrosivity class of the environment. Review product specifications to ensure coating thickness meets requirements necessary for effective protection.
Corrosion resistance tests: The ISO 12944 standard includes specific tests to evaluate the corrosion resistance of the coating, such as the salt spray test (ISO 9227). Verify whether the paint has been subjected to these tests and whether it has demonstrated adequate corrosion resistance under adverse environmental conditions.
Adhesion and flexibility: Adhesion and flexibility testing according to ISO 12944 is important to ensure that the zinc coating adheres securely to the substrate and can withstand expansion and contraction caused by temperature changes and other environmental factors.
Service life assessment: The standard provides guidelines for evaluating the expected service life of the coating based on the corrosivity class of the environment and other factors. Consider this information when selecting a paint to ensure long-lasting corrosion protection.
Compliance with ASTM A780: This standard establishes requirements for zinc coating by hot-dip galvanized methods. Check if the paint meets the standards of this standard to ensure the quality and effectiveness of the coating.
Hot-dip galvanized coating according to ISO 1461: This standard specifies the requirements for hot-dip galvanizing of steel products and provides guidelines for the minimum thickness of the zinc coating. Make sure the paint meets the requirements of this standard to ensure long-lasting corrosion protection.
Do not rely solely on the manufacturer's claim that the product complies with ISO 1461 or ASTM A780. It is important to request detailed information on the thickness of the dry zinc layer and for the manufacturer to justify how compliance with the standard is ensured. Many manufacturers claim that their product meets the standard just because it contains zinc in the paint, when in reality it is not enough.
Substrate Compatibility: Check if the paint is compatible with the substrate on which it will be applied. Some zinc-rich paints may require special substrate pretreatment to ensure adequate adhesion and optimal corrosion protection.
Manufacturer's Warranty: Check to see if the manufacturer offers any warranty or performance certification for the paint. A manufacturer-backed warranty can provide peace of mind to the customer and ensure the quality and durability of the coating.
Ease of Application: Consider the ease of application of the paint, especially if it is an on-site application. Look for paints that are easy to apply and require minimal drying time to minimize downtime and maximize productivity.
By considering both ASTM A780 and ISO 1461 along with ISO 12944, customers can have a complete view of the quality and performance of zinc-rich paint and make informed decisions when selecting a coating for their specific applications. Check how it complies with the standards or with what thicknesses and why the thicknesses indicated.
GALVANOL
GALVANOL is a paint rated for C1 to C5 corrosivity environments, making it suitable for a wide range of environments.
The technical sheet details the thicknesses and corrosion resistance according to each corrosivity class, providing precise information on its performance.
GALVANOL has successfully passed tests of more than 1,440 hours in a salt fog chamber, demonstrating its durability even with a minimum thickness of 121 microns.
The perfect adhesion of GALVANOL before and after corrosivity tests, according to ISO 12944, is supported by test reports that can be consulted.
GALVANOL's corrosion protection durability guarantee is backed by precise specifications, and coating and process warranties are offered to ISO 12944 (7 and 8).
GALVANOL complies with ASTM A780 for use as a hot-dip galvanized repair coating, guaranteeing its quality and effectiveness.
It also meets ISO 1461 for use as a hot-dip galvanized repair coating, ensuring effective protection against corrosion.
All relevant information is detailed in the product technical sheet, which provides a complete overview of its features and performance.
The quality of GALVANOL is guaranteed according to the product technical sheet, and a Declaration of Performance is issued if necessary, for greater peace of mind for the customer.
GALVANOL can be applied in a variety of ways, including brush, roller, compressed air spray or air spray, offering flexibility in application. In addition, it is available in spray format for greater convenience.
For more information, please refer to the technical data sheet and be sure to review the safety data sheet.
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