AS NZS 2312.1-2014 PDF

Full title and description

AS/NZS 2312.1:2014 — Guide to the protection of structural steel against atmospheric corrosion by the use of protective coatings — Part 1: Paint coatings. A joint Australian/New Zealand guidance standard providing recommended paint coating systems, surface preparation, specification and inspection guidance for protecting structural steel against atmospheric corrosion.

Abstract

AS/NZS 2312.1:2014 gives designers, specifiers and contractors practical, evidence-based guidance on selecting and specifying paint coating systems for structural steel exposed to atmospheric conditions. The Standard classifies corrosivity environments, describes planning and design considerations, details surface-preparation methods, lists typical paint system types and durability classes, and sets out inspection, testing and maintenance principles to achieve predictable service life and first-maintenance targets.

General information

• Status: Published; active guidance standard (jointly published). Users should confirm current status with their national standards body for any later amendments or national revisions.
• Publication date: 19 December 2014
• Publisher: Standards Australia and Standards New Zealand (joint publication)
• ICS / categories: 25.220.40 (Metallic coatings), 77.040 (Testing of metals)
• Edition / version: First edition — 2014 (AS/NZS 2312 was split into parts; this is Part 1: Paint coatings)
• Number of pages: Approximately 128 pages (market editions vary slightly by format)

Scope

This part of AS/NZS 2312 provides guidance for the selection and specification of paint coating systems to protect structural steelwork against exterior atmospheric corrosion. It covers classification of atmospheric corrosivity, planning and design considerations, surface-preparation treatments, factors influencing coating selection, paint coating system descriptions and application methods, inspection and testing, maintenance, and preparation of coating specifications. It does not cover light-sheet roofing/purlins in detail (manufacturers’ guidance is referenced) and metallic coatings (hot-dip galvanizing and thermal spray) are covered in separate parts of the series.

Key topics and requirements

• Classification of corrosivity environments (guidance for assessing site exposure and selecting system durability).
• Design and planning considerations to minimise corrosion risk (drainage, detail design, welding/bolting accessibility).
• Surface preparation methods and cleanliness grades (recommendations referencing abrasive blasting grades and surface profiles).
• Paint system types and typical multilayer systems (zinc-rich primers, epoxies, polyurethane/topcoats, alkyds, etc.) with recommended film thicknesses.
• Durability categories and estimated service-life to first maintenance for system/environment combinations.
• Specification content guidance (what to require from contractors and manufacturers: materials, application, QA, records).
• Inspection, testing and measurement requirements (dry film thickness, adhesion, holiday testing, surface contamination checks).
• Maintenance planning and remedial actions for damaged or deteriorated coatings.
• Guidance on duplex systems (paint over metallic coatings) and when to use combined approaches.

Typical use and users

Primary users are structural and corrosion engineers, architects, specifiers, principal contractors, coating manufacturers and applicators, and inspection/quality assurance personnel. The standard is used to prepare coating specifications for bridges, buildings, industrial structures, and equipment exposed to atmospheric conditions where long-term corrosion protection and predictable maintenance intervals are required.

Related standards

Commonly referenced standards and documents include other parts of the AS/NZS 2312 series (for example Part 2 — hot dip galvanizing, and Part 3 — thermal metal spray coatings), AS 4312 (classification of corrosivity/environments), AS/NZS 4680 (hot-dip galvanizing), AS/NZS 5131 (structural steelwork requirements), AS 1627 series (surface preparation), and international systems guidance such as ISO 12944 (protective paint systems for offshore/onshore steel structures).

Keywords

corrosion protection, structural steel, paint coatings, surface preparation, coating systems, durability, inspection, specification, maintenance, atmospheric corrosivity

FAQ

Q: What is this standard?

A: AS/NZS 2312.1:2014 is Part 1 of the AS/NZS 2312 series and is a guidance standard for protecting structural steel from atmospheric corrosion using paint coating systems.

Q: What does it cover?

A: It covers classification of corrosivity, design and planning to reduce corrosion risk, surface-preparation methods, recommended paint system types and thicknesses, inspection and testing, maintenance planning, and how to prepare coating specifications for structural steelwork exposed to atmospheric environments.

Q: Who typically uses it?

A: Structural and corrosion engineers, architects, specifiers, paint manufacturers, applicators/contractors and QA/inspection personnel involved in design, specification and maintenance of painted steelwork.

Q: Is it current or superseded?

A: AS/NZS 2312.1:2014 superseded portions of earlier AS/NZS 2312 editions (2002 and earlier). It was published on 19 December 2014 and remains an authoritative guidance document; however, users should confirm with their national standards body for any amendments, national revisions or later related parts (for example updates to Part 2 or Part 3) before finalising specifications.

Q: Is it part of a series?

A: Yes. AS/NZS 2312 was restructured into parts; Part 1 covers paint coatings, Part 2 covers hot-dip galvanizing, and additional parts address other metallic or specialist coatings. The parts together form the guidance suite for protective coatings on structural steel.

Q: What are the key keywords?

A: corrosion protection, paint systems, structural steel, surface preparation, durability, inspection, specification, atmospheric corrosivity.