The standard utilizes three specific angles ( 20∘20 raised to the composed with power 60∘60 raised to the composed with power 85∘85 raised to the composed with power ) to evaluate different gloss levels.
Controlling the sheen consistency of lacquers, varnishes, and laminates. Summary of the Test Method
A frequent companion to your search for is curiosity about ISO 2813. The two standards are technically equivalent but not identical.
A new result appeared. Technical Standards Repository - Updated 2023. astm d523 pdf new
Significant clarification has been added regarding the use of a flat surface. The new PDF stresses that sample curvature greater than a defined radius invalidates the test.
Elena looked at the PDF icon on her screen. A simple digital file. A few kilobytes of data that defined how light bounced off a surface.
Controlling the sheen of glossy magazines, brochures, and packaging. The standard utilizes three specific angles ( 20∘20
At its core, ASTM D523 provides a standardized procedure for measuring the specular gloss of nonmetallic specimens. "Specular gloss" refers to the surface's ability to reflect light in the mirror-like direction. According to the standard, gloss is associated with the capacity of a surface to reflect more light in directions close to the specular than in others. Measurements obtained by this test method have been shown to correlate well with visual observations of surface shininess made at roughly the corresponding angles.
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Designed for surfaces that read above 70 gloss units (GU) when measured at 60°. It provides better differentiation between highly polished coatings, such as automotive finishes. The two standards are technically equivalent but not
Ensure the specimen surface is clean, dry, and flat.
Elena walked over, the click of her heels swallowed by the hum of the air filtration system. "What is it? The Defendant’s exhibit?"