Pdf New !!top!! - Astm D523

If your work involves color or other appearance properties, you may also need to refer to complementary standards. For instance, the latest version of covers the calculation of color tolerances and color differences from instrumentally measured color coordinates. You can find more details in our related article: "astm d2244 pdf new" .

Used for "sheen" or near-grazing shininess on flat, non-reflective surfaces. 🛠️ Key Technical Details

Key points in the standard

Matching the gloss levels of exterior body panels, interior plastic dashboards, and trim components.

The standard "universal" angle for most specimens; used to determine if 20° or 85° is more appropriate. astm d523 pdf new

To see exactly what has changed, industry professionals often use the ASTM Redline version, which highlights every addition and deletion between the new active standard and its predecessor. Common updates in these cycles often include: D523 Standard Test Method for Specular Gloss - ASTM

Approximately every 5-8 years. Always verify on ASTM's website before starting a major quality project. If your work involves color or other appearance

How to properly document gloss units (GU) and the angle used. Key Geometries in ASTM D523

For or low-gloss surfaces where the 60° reading is below 10. < 10 units Key Procedural Steps Used for "sheen" or near-grazing shininess on flat,

Conversely, if the 60° gloss value is less than 10 GU (indicating a very matte, low-gloss surface), the test method recommends using the . The 85° angle is employed to enhance resolution on matte surfaces and is particularly useful for measuring "sheen." This is common in the evaluation of flat paints, textured coatings, and paper products where a true gloss measurement at lower angles would provide insufficient discrimination.