ISO 14713-1:2017

Overview

ISO 14713-1:2017 - "Zinc coatings - Guidelines and recommendations for the protection against corrosion of iron and steel in structures - Part 1: General principles of design and corrosion resistance" - provides practical guidance on using zinc coatings to protect iron and steel in a wide range of environments. The standard covers selection, design principles, expected corrosion resistance and initial protection for coatings applied by common processes such as hot dip galvanizing, sherardizing, thermal spraying, mechanical plating and electrodeposition. It does not cover in-service maintenance (see Related Standards).

Key Topics

• Scope and coating processes: Guidance applies to hot-dip (after fabrication and continuous sheet), sherardized, thermally sprayed, mechanically plated and electrodeposited zinc coatings.
• Selection criteria: How to choose a zinc coating system based on macro- and micro-environment, required life to first maintenance, cost, availability and need for post-treatment or duplex systems (zinc + paint).
• Design requirements:
  • Avoid water/dirt traps (pockets, recesses); design for drainage and access for maintenance.
  • Account for tubes and hollow sections, internal vs. external protection.
  • Consider connections, fastenings and welding effects on coatings.
  • Specify fabrication sequence (coating after forming where appropriate) and marking/handling precautions.
• Corrosion in environments: Guidance on atmospheric exposure, soils, water, abrasion, exposure to chemicals, elevated temperatures and contact with other materials (concrete, wood, bimetallic contact).
• Testing and evaluation: Reference to accelerated test methods relevant to zinc coatings.
• Normative references: Links to related technical specifications (e.g., ISO 1461, ISO 2063, ISO 12683, ISO 17668).

Applications and Users

ISO 14713-1 is intended for:

• Structural and civil engineers specifying corrosion protection for steel structures (bridges, buildings, civil works)
• Fabricators and coating applicators choosing appropriate zinc processes and sequences
• Asset owners, specifiers and procurement teams assessing life-to-first-maintenance and total lifecycle costs
• Designers optimizing steel geometry to improve coating performance and reduce maintenance

Practical uses include selecting coating thickness/process for a given environment, designing for easier coating application and future inspection, and planning duplex systems (zinc + paint) for extended service life.

Related Standards

• ISO 12944-5, ISO 12944-8 - maintenance and in-service painting guidance
• ISO 1461 - hot dip galvanizing specifications
• ISO 2063 - thermal spraying
• ISO 12683 - mechanically deposited zinc coatings
• ISO 17668 - sherardizing

Keywords: ISO 14713-1:2017, zinc coatings, hot dip galvanized, sherardized, corrosion protection, steel structures, design for corrosion resistance.