ISO 10074-2021 PDF

Full title and description

ISO 10074:2021 — Anodizing of aluminium and its alloys — Specification for hard anodic oxidation coatings on aluminium and its alloys. This product entry describes the PDF edition of the International Standard that specifies requirements and test methods for electrolytic hard anodic (hard‑coat) oxidation coatings applied to aluminium and its alloys, together with the customer information to be supplied to the anodizer (see Annex A).

Abstract

This International Standard sets out requirements for hard anodic oxidation coatings on cast and wrought aluminium and aluminium alloys, including specified test methods, acceptance criteria, and the information customers must supply to anodizing suppliers. It excludes coatings produced by plasma electrolytic oxidation, micro‑arc/plasma‑chemical anodic oxidation, anodic spark deposition and similar spark processes.

General information

• Status: Published / Active.
• Publication date: 25 May 2021 (May 2021).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 25.220.20 — Surface treatment; anodizing.
• Edition / version: Edition 4 (2021).
• Number of pages: 18 pages.

Scope

ISO 10074:2021 applies to electrolytic hard anodic oxidation (hard‑coat) treatments on aluminium and its alloys. The standard defines material/ alloy groupings, required coating performance (including minimum surface density/mass per unit area), visual and adhesion requirements, thickness ranges and measurement methods, and specified test procedures for abrasion/wear, corrosion resistance and other characteristic tests. It explicitly excludes non‑electrolytic or spark/plasma‑based coating processes (for example plasma electrolytic oxidation, micro‑arc oxidation, anodic spark deposition). The standard also specifies the information the customer should provide to the anodizer (Annex A).

Key topics and requirements

• Material classification: grouping of alloys (casting and wrought alloy classes) that determine minimum property requirements and test criteria.
• Coating thickness: typical ranges and categories (examples in practice: low, normal and high hard‑coat thicknesses; measurement by eddy‑current or microscopic methods).
• Surface density / mass per unit area: minimum mass/dm2 values specified for alloy classes to indicate adequate coating build.
• Wear and abrasion testing: specified test methods (abrasive wheel, abrasive jet, Taber or other agreed methods) with acceptance criteria.
• Visual and adhesion requirements: uniform finish, limits on defects (no spalling or blistering); microcracking/crazing normally acceptable within limits.
• Excluded processes: clear exclusions for plasma electrolytic, micro‑arc, spark‑anodizing and similar technologies.
• Customer‑supplied information: recommended checklist of part specification, alloy identity, required coating thickness, end‑use conditions and testing expectations (Annex A).

Typical use and users

Primary users include anodizing service providers, surface‑treatment laboratories, original equipment manufacturers (OEMs) specifying hard anodic coatings for functional parts, procurement/specification engineers, quality assurance teams, and testing/inspection laboratories. The standard is used to define contract requirements, acceptance testing and supplier quality control for hard‑coat anodizing intended to improve wear, sliding or dielectric properties of aluminium components.

Related standards

Standards commonly referenced with ISO 10074 include test and measurement methods such as ISO 2106 (surface density/mass per unit area for anodic coatings), ISO 2360 (eddy‑current measurement of coating thickness), ISO 1463 (microscopic measurement of coating thickness), and ISO 8251 (abrasive wheel wear test), among others. ISO 10074:2021 supersedes ISO 10074:2017.

Keywords

hard anodizing, hard anodic oxidation, aluminium, anodizing, anodisation, coating thickness, surface density, wear testing, abrasive resistance, ISO 10074, surface treatment.

FAQ

Q: What is this standard?

A: ISO 10074:2021 is an International Standard that specifies requirements and test methods for electrolytic hard anodic oxidation (hard‑coat) coatings on aluminium and aluminium alloys.

Q: What does it cover?

A: It covers material grouping, coating thickness and mass requirements, visual and adhesion acceptance, wear/abrasion and other test methods, and the customer information to be supplied to the anodizer. It excludes plasma‑ and spark‑based coating processes.

Q: Who typically uses it?

A: Anodizing processors, OEMs specifying functional hard anodic coatings, procurement and QA engineers, and testing/inspection labs use this standard to define and verify hard‑coat performance.

Q: Is it current or superseded?

A: ISO 10074:2021 is the current published edition (Edition 4) and replaces ISO 10074:2017. The publication date is 25 May 2021.

Q: Is it part of a series?

A: ISO 10074 is part of the family of ISO standards covering anodizing and surface treatments of aluminium; it is commonly used together with related ISO test method standards (for thickness, mass per unit area and abrasion tests).

Q: What are the key keywords?

A: Hard anodizing, anodic oxidation, aluminium, coating thickness, surface density, abrasive wear, anodizer, ISO 10074.