(clause 6.2):
: It provides a specific coding system to describe whether the failure happened in the substrate, between layers (adhesive), or within a single layer (cohesive). Related Standards in the Series
If you are searching for a , you are likely looking to download the official document, understand its technical requirements, or implement its testing protocols on a job site. This article provides a deep dive into the standard, how to obtain its PDF, and how to apply its rules to ensure your coating system meets the required fracture strength. pdf iso -16276-1
: A test cylinder (dolly), usually made of aluminum or stainless steel, is glued to the coating surface using a specified adhesive like cyanoacrylate or epoxide.
The standard also quantifies the percentage area of each failure type. For acceptance, you typically need >80% cohesive failure within the specified strength range. (clause 6
The standard is technically significant because it establishes the following:
Purchase the official PDF from your national standards body. Read it alongside your coating manufacturer’s data sheet. Train your inspectors on fracture analysis. Only then will you move from simply owning the standard to truly mastering adhesion assessment. : A test cylinder (dolly), usually made of
The two parts are complementary, not interchangeable. ISO 16276-1 is preferred for routine quality control on multi-coat systems up to 250 µm.
This is an invalid test (Type E failure). Clean the dolly, roughen the cured coating slightly, and retest with a different adhesive.
ISO 16276-1 is famous for its detailed fracture pattern analysis. After the dolly pulls off, you must classify the failure:
In the world of protective coatings and corrosion protection, a coating is only as good as its adhesion. If the paint or coating fails to stick to the steel substrate, the asset—whether a bridge, pipeline, or offshore platform—will fail prematurely. This is where becomes a non-negotiable document for engineers, inspectors, and asset managers.