Element offers testing to international standards ISO 12944-6 and ISO 12944-9 (formerly ISO 20340) to aid in the selection of suitable paint systems for corrosion protection of steel structures.

When steel is left unprotected in the environment, whether that be atmospheric or immersed in soil or water, it is subject to corrosion that can lead to damage to infrastructure. Protective coating systems are typically deployed to avoid this damage. ISO 12944 looks at these protective coating systems and provides test criteria which demonstrate the suitability of a protective coating in different environmental corrosivity categories including the new CX and Im4 categories.

As a global ISO 17025 certified laboratory, with a world-leading technical team, Element carries out testing to the highest quality standards to ensure coating schemes are tested in accordance with the latest industry standards.

Element’s corrosion testing experts help support you in this new version of the standard and can explain the differences between the 1998 version and the current 2018 update; ensuring the most appropriate level testing is undertaken to approve your protective coating system. 

Test methods

ISO 12944 test methods

ISO 6270-1 –  water condensation test 
ISO 9227 – neutral salt spray test 
ISO 2812-2 – water immersion
ISO 12944-6 and 9 Annex B – cyclic ageing test 
ISO 15711 – cathodic disbondment (ambient temperature)
Product fingerprinting (binder and pigment content, non-volatile matter, density, ash content and infrared spectra)

categories we test

Corrosive categories we test

•C2 low corrosivity (low to very high durability)

• C3 medium corrosivity (low to very high durability)

• C4 high corrosivity (low to very high durability)

• C5 very high corrosivity (low to very high durability) 

• CX extreme corrosivity

Customized testing to ISO 12944

In addition to ISO 12944 testing, Element can support you in our state-of-the-art testing facility with a customized test program to measure the effectiveness of protective coatings systems and provide you with the most accurate information to meet your specific project needs.

For more information about our ISO 12944 testing, or to request a quote, contact us today. 


Our team of over 6,700 Engaged Experts in North America, Europe, The Middle East, Australia, Asia and Africa are ready to help you.