Pdf Iso -16276-1 -

: It traditionally applies to steel substrates with a thickness of at least 10 mm . However, the updated ISO 16276-1:2025 edition expands this scope to include substrates as thin as 3 mm .

: The force at fracture is recorded (typically in Megapascals, MPa), and the nature of the failure (adhesive vs. cohesive) is assessed visually.

: The procedures are applicable to coatings of any thickness . pdf iso -16276-1

The standard, officially titled "Corrosion protection of steel structures by protective paint systems — Assessment of, and acceptance criteria for, the adhesion/cohesion (fracture strength) of a coating — Part 1: Pull-off testing" , is a critical benchmark for quality control in industrial coating applications.

: A suitable adhesive (typically a 2-pack epoxy or cyanoacrylate) is used to bond the dolly to the coating surface. : It traditionally applies to steel substrates with

: A portable tensile tester applies a uniform, increasing tensile force perpendicular to the surface.

: Users should note that pull-off testing is a destructive process . Areas tested will require repair once the test is completed, the extent of which depends on the project specification. 2. The Pull-Off Testing Procedure cohesive) is assessed visually

: The coating and the face of the test cylinder ( dolly ) are cleaned and degreased.

This standard provides a rigorous, standardized methodology for measuring the of protective coatings—a term that encompasses both adhesion (bond to the substrate) and cohesion (internal strength of the coating). 1. Scope and Application

The core of the standard is the , which measures the force required to detach a coating from its substrate. Core Steps in Testing :