: Used for low-gloss specimens (typically those with a 60° gloss value lower than 10).
: Results are typically exported as PDF or CSV files, including statistics and serial numbers for traceability. Where to Access the Standard
While the fundamental principles of gloss measurement change rarely, ASTM continuously reviews its standards for technical accuracy. Ensuring you have the latest (such as the current valid version in 2026) ensures:
However, the standard also has some limitations:
The new version explicitly excludes curved surfaces (which require a different standard, ASTM E430) and clarifies that it is not for use with metallic or mirror-like surfaces due to secondary reflections. astm d523 pdf new
Approximately every 5-8 years. Always verify on ASTM's website before starting a major quality project.
The gloss of a paint coating is an essential characteristic that affects its appearance and performance. High-gloss coatings tend to be more reflective and have a more uniform appearance, while low-gloss coatings are less reflective and may appear more matte. The measurement of gloss is critical in various industries, including:
The surface being tested must be flat, clean, and free from defects or blemishes. Even minor fingerprints or dust can throw off the specular reflectance readings.
Note: Always look for the most recently reaffirmed or revised year (e.g., D523-14(2021) or newer if released by 2026) to ensure compliance with current industry requirements [2]. Conclusion : Used for low-gloss specimens (typically those with
Camouflage coatings, chalkboard paint, soft-touch electronics Accessing the Full Standard
Switch your meter to 20° and record those readings.
Place the instrument on the sample and measure the gloss at the appropriate angle ( 20∘20 raised to the composed with power 60∘60 raised to the composed with power 85∘85 raised to the composed with power
is the Standard Test Method for Specular Gloss. It describes the procedure for measuring the gloss of non-metallic samples using a glossmeter. The standard covers three primary angles of measurement, which are selected based on the gloss level of the material being tested. Ensuring you have the latest (such as the
There are only three legitimate ways to get the official, new PDF. We rank them by cost and utility.
Converts the collected light energy into an electrical signal. The Scale: Gloss Units (GU)
Elena typed furiously. .