Astm D523 Pdf New !new! ◎

standard, titled "Standard Test Method for Specular Gloss," is the primary international guideline for measuring the visual shininess of nonmetallic materials. The current active version is ASTM D523-14(2018)

Section 8: Conditioning (Updated)

Modern materials (water-borne coatings, UV-cured plastics) require specific temperature (23±2°C) and relative humidity (50±5%) conditioning times. The new PDF specifies 24 hours minimum unless otherwise agreed. astm d523 pdf new

ASTM D523 Standard Test Method

20° (High Gloss): Used for very shiny surfaces; provides better resolution for samples with high 60° readings. standard, titled "Standard Test Method for Specular Gloss,"

60° Geometry: The universal angle. Used for comparing most specimens and determining if higher or lower angles are required. 60°: Universal measurement for intermediate gloss (10 to

• 60°: Universal measurement for intermediate gloss (10 to 70 GU).
• 20°: High gloss (above 70 GU).
• 85°: Low gloss (below 10 GU).

You can download the ASTM D523 standard in PDF format from the ASTM website or other online sources. The PDF document provides detailed information on the test method, including the procedure, significance, and applications.

But here is the reality check for 2026: There is no official, free “new PDF” of ASTM D523.