ISO 10216-2024 PDF

Full title and description

ISO 10216:2024 — Anodizing of aluminium and its alloys — Instrumental determination of image clarity of anodic oxidation coatings — Instrumental method. This international standard specifies an instrumental test method using a sliding combed shutter and photometric measurement to determine the image clarity and optical evenness of anodic oxidation (anodizing) coatings on aluminium and aluminium alloys.

Abstract

ISO 10216:2024 defines an instrumental method for assessing the image clarity reflected by anodic oxidation coatings on aluminium and its alloys. The method measures surface reflection with a sliding combed shutter and photometer; it is applied to flat, reflective surfaces and can also be used to evaluate optical evenness of the anodic coating.

General information

• Status: Published.
• Publication date: 2 October 2024 (Edition 4).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 25.220.20 (Surface treatment; anodizing).
• Edition / version: Edition 4 (2024).
• Number of pages: 9 pages (main ISO publication).

Scope

ISO 10216:2024 applies to flat surfaces of aluminium and aluminium alloys that reflect an image onto a limited combed shutter and a photometer. It specifies the instrumental arrangement and measurement procedure to determine image clarity (reflective image sharpness) of anodic oxidation coatings, and it can also be used to assess the optical evenness of such coatings. The method is intended for use in quality control and laboratory testing of decorative and protective anodic coatings.

Key topics and requirements

• Instrumental measurement method for image clarity using a sliding combed shutter and photometer.
• Specification of test setup, sample orientation and surface requirements (flat, reflective surfaces).
• Procedure for measuring reflected light signal and deriving image clarity and optical evenness metrics.
• Application for quality control of anodic oxidation (anodizing) coatings on aluminium/alloys.
• Replacement/revision information: replaces the 2017 edition (ISO 10216:2017) as the current edition.

Typical use and users

Typical users include anodizing and surface‑finishing laboratories, quality control engineers at aluminium processors and anodizers, OEMs specifying surface appearance, materials testing laboratories, and standards/specification writers. The standard is used to verify and document the reflective appearance and optical evenness of anodic coatings as part of acceptance testing and process control.

Related standards

ISO 10216:2024 is part of the family of ISO standards on anodizing and surface treatment maintained by ISO/TC 79/SC 2. Related standards include ISO 7599 (method for specifying decorative and protective anodic oxidation coatings) and ISO 10074 (specification for hard anodic oxidation coatings), among others addressing appearance, corrosion rating and test methods for anodized aluminium.

Keywords

anodizing, anodic oxidation, aluminium, image clarity, optical evenness, combed shutter, photometer, surface finish, ISO/TC 79/SC 2.

FAQ

Q: What is this standard?

A: ISO 10216:2024 is an international standard that defines an instrumental test method for determining the image clarity and optical evenness of anodic oxidation (anodizing) coatings on aluminium and aluminium alloys.

Q: What does it cover?

A: It covers the instrumental arrangement, measurement procedure and application limits for using a sliding combed shutter and photometer to measure reflected image clarity on flat, reflective anodized aluminium surfaces.

Q: Who typically uses it?

A: Anodizers, surface‑treatment and materials testing labs, OEMs and quality/control engineers involved in specifying or verifying the appearance and optical uniformity of anodized aluminium parts.

Q: Is it current or superseded?

A: Current — ISO 10216:2024 (Edition 4) was published on 2 October 2024 and supersedes the previous edition ISO 10216:2017.

Q: Is it part of a series?

A: It is part of the suite of ISO standards on anodizing and surface treatment (ISO/TC 79/SC 2). Closely related documents include ISO 7599 (specifying decorative and protective anodic coatings) and ISO 10074 (hard anodic oxidation coatings). These complementary standards address specification, performance and other test methods for anodic coatings.

Q: What are the key keywords?

A: Anodizing, image clarity, optical evenness, sliding combed shutter, photometer, aluminium, surface finish.