What is ISO 11844‑1 about ?
ISO 11844‑1 is the first part of the ISO 11844 series of documents on corrosion of metals and alloys. ISO 11844 is an international standard on corrosion of metals and alloys that assists you to calculate the indoor corrosivity of metal and alloys.
ISO 11844‑1 establishes a classification of low corrosivity of indoor atmospheres. ISO 11844‑1 specifies the reference metals for which a corrosion attack after a defined exposure period is used for determining corrosivity categories of indoor atmospheres of low corrosivity.
ISO 11844‑1 defines corrosivity categories of indoor atmospheres according to corrosion attacks on standard specimens. ISO 11844‑1 indicates important parameters of indoor atmospheres that can serve as a basis for the estimation of indoor corrosivity.
Who is ISO 11844‑1 for ?
ISO 11844‑1 on corrosion of metals and alloys is applicable to:
- Manufacturers of metal and alloy components
- Suppliers of metal and alloy components
- Service and inspection departments of metal industries
Why should you use ISO 11844‑1 ?
Metals, alloys and metallic coatings are subject to atmospheric corrosion under the impact of air humidity, especially when gaseous and solid substances of atmospheric pollution co-impact. Corrosivity data are of fundamental importance for derivation of suitable corrosion protection, or for evaluation of serviceability of metal elements of a product.
ISO 11844‑1 provides you with characterization on indoor atmospheric environments of low corrosivity that can affect metals and metallic coatings during storage, transport, installation or operational use, to set a consistent way of indoor corrosivity classification, and to prescribe procedures for derivation and estimation of indoor corrosivity categories.
ISO 11844‑1 provides you with general procedures for derivation and estimation of indoor corrosivity categories which allow you to set up corrosion-free indoor environments.
What’s changed since the last update ?
BS EN ISO 11844‑1:2020 supersedes BS EN ISO 11844‑1:2008, which is now withdrawn.
Changes in BS EN ISO 11844‑1:2020 include –
- A reference to the ISO 16000 series in Clause 7 has been added
- A model that estimates the indoor concentration and deposition of pollutants originating from outdoors has been added
- Lead has been included as a standard specimen with high sensitivity to vapour organic acids.
