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How to validate protective coatings with adhesion and corrosion testing Protective coatings only deliver value if they stay bonded to the substrate and resist the environments they're exposed to. Whether you're coating bridge steel, automotive body panels, marine structures, or industrial components, two families of test give you the evidence you need: adhesion testing and…

Key terms Adhesion: The strength of the bond between a coating and its substrate.  Substrate: The surface a coating is applied to, such as metal, concrete, wood, or plastic.  Pull-off adhesion test: A quantitative test that measures the perpendicular force needed to detach a coating from its substrate, reported in MPa or psi.  Dolly: The…

Coating adhesion and corrosion testing are two complementary coating test and measurement methods used to confirm that a protective coating will perform once a product is in service. Together they answer two questions that matter to quality, R&D, and operations experts: will the coating stay attached to the substrate, and will it protect that substrate…

Key terms Impact testing  A test method measuring the energy a material absorbs when struck by a sudden, high rate force. Used to determine toughness, brittleness, and shock resistance.  Izod impact test  A pendulum based impact test where the specimen is clamped vertically with the notch facing the striker. Governed by ISO 180 and ASTM…

Overview Pendulum impact testing is the most widely used method for measuring a material's toughness. A weighted hammer is released from a known height, strikes a clamped specimen, and the energy absorbed at fracture is calculated from the height the pendulum rises to after impact. The result, expressed in joules, tells quality, R&D, and operations…

Definition of Impact testing Impact testing measures how much energy a material absorbs when struck by a sudden, high rate force. The energy absorbed at the point of fracture indicates the material's toughness, brittleness, and resistance to shock loading. Impact testing is a core requirement across plastics, polymers, composites, ceramics, and non ferrous metals, and…

Key terms Term  Definition  Score  The precisely engineered groove stamped into a can end so it tears open when the tab is pulled.  Score residual  The remaining material thickness between the base of the score groove and the underside of the end.  Easy-open end (EOE)  A can end designed to open by hand using an integrated tab,…

If you have ever wondered how to measure the score on a can, why score measurement matters, or which equipment does the job best, this guide covers what quality, R&D, and operations experts need to know. The score on an easy-open end is one of the most critical, yet often underestimated, features in the entire can…

What Is Score Residual on a Can End? Score residual is the thin layer of metal that remains between the base of the score groove and the underside of an easy-open can end. The score is the precisely engineered groove stamped into the end so it tears open cleanly when the tab is pulled. The score residual is the…