BS ISO 22410:2020 - Corrosion of Metals and Alloys

Standard Number: BS ISO 22410:2020

Pages: 24

Released: 2020-06-24

ISBN: 978 0 580 98765 6

Status: Standard

Overview

The BS ISO 22410:2020 standard is an essential document for professionals dealing with the corrosion of metals and alloys, specifically focusing on the electrochemical measurement of ion transfer resistance. This standard provides a comprehensive methodology to characterize the protective rust layer on weathering steel, a crucial aspect for industries relying on the durability and longevity of steel structures.

Importance of Weathering Steel

Weathering steel, often referred to as COR-TEN steel, is a group of steel alloys that are designed to eliminate the need for painting and form a stable rust-like appearance after several years of exposure to weather. The protective rust layer that forms on the surface of weathering steel is a key factor in its ability to resist corrosion. This standard provides the necessary guidelines to measure and evaluate this protective layer, ensuring that the steel maintains its structural integrity over time.

Electrochemical Measurement of Ion Transfer Resistance

The core focus of the BS ISO 22410:2020 standard is the electrochemical measurement of ion transfer resistance. This technique is pivotal in assessing the effectiveness of the protective rust layer on weathering steel. By understanding the ion transfer resistance, professionals can determine the quality and durability of the rust layer, which directly impacts the steel's resistance to further corrosion.

This standard outlines the procedures and equipment necessary to perform accurate measurements, ensuring that the results are reliable and consistent. It is an invaluable resource for engineers, metallurgists, and researchers who are involved in the development and maintenance of steel structures.

Applications and Benefits

The BS ISO 22410:2020 standard is applicable across various industries, including construction, transportation, and infrastructure development. By adhering to this standard, companies can ensure that their steel structures are built to last, reducing maintenance costs and extending the lifespan of their projects.

Some of the key benefits of using this standard include:

• Enhanced Durability: By accurately measuring the protective rust layer, companies can ensure that their weathering steel structures are more durable and resistant to environmental factors.
• Cost Efficiency: Reducing the need for frequent maintenance and repairs can lead to significant cost savings over the lifespan of a project.
• Environmental Impact: Weathering steel is known for its reduced environmental impact due to its longevity and the elimination of the need for protective coatings.

Who Should Use This Standard?

The BS ISO 22410:2020 standard is designed for a wide range of professionals, including:

• Engineers: Structural and civil engineers who are involved in the design and construction of steel structures.
• Metallurgists: Professionals who specialize in the properties and applications of metals and alloys.
• Researchers: Academics and industry researchers who are focused on advancing the understanding of corrosion and protective coatings.
• Quality Assurance Specialists: Individuals responsible for ensuring that materials and structures meet industry standards and regulations.

Conclusion

The BS ISO 22410:2020 standard is a critical tool for anyone involved in the use and maintenance of weathering steel. By providing a detailed methodology for measuring ion transfer resistance, this standard helps ensure that steel structures are both durable and cost-effective. Whether you are an engineer, metallurgist, or researcher, this standard offers the guidance needed to maintain the highest quality in steel construction and maintenance.

BS ISO 22410:2020

This standard BS ISO 22410:2020 Corrosion of metals and alloys. Electrochemical measurement of ion transfer resistance to characterize the protective rust layer on weathering steel is classified in these ICS categories:

• 77.060 Corrosion of metals

This document specifies a method for the electrochemical measurement of ion transfer resistance of the rust layer formed on weathering steel alloys in order to assess their protective properties against corrosion thereafter^{[ 3]}. This method uses an electrochemical AC impedance measurement^{[ 4][ 5][ 6][ 7][ 8]}_, together with harmonic analysis, to identify the ion transfer resistance, and a rust thickness measurement to characterize the stability of the protective rust layer in terms of corrosion protection under used environments.