Anodizing of aluminium and its alloys - Measurement of specular reflectance and specular gloss of anodic oxidation coatings at angles of 20 degrees, 45 degrees, 60 degrees or 85 degrees

This document provides guidelines for the measurement of specular reflectance and specular gloss of anodized aluminum and aluminum alloys at angles of 20°, 45°, 60°, or 85°. It outlines the procedures, equipment requirements, and conditions necessary to ensure consistent and accurate results. The standard is applicable to both flat and curved surfaces and covers various types of anodized coatings. It includes information on sample preparation, calibration of measuring instruments, and data interpretation. The methods described are suitable for quality control, product development, and research purposes. The document also specifies the parameters that should be recorded during the measurement process to facilitate comparison and reproducibility of results. This standard aims to establish a common reference for the measurement of optical properties of anodized aluminum and aluminum alloys.