What is ISO 8504‑2 - Preparation of steel substrates before application of paints about?
ISO 8504‑2 is part two of a multi-series of international standards on preparation of steel substrates before application of paints and related products which covers the abrasive blast-cleaning method.
ISO 8504‑2 specifies abrasive blast-cleaning methods for the preparation of steel surfaces before coating with paints and related products. ISO 8504‑2 provides information on the effectiveness of the individual methods and their fields of application. It describes the equipment to use and the procedure to follow.
Note: These methods are essentially intended for hot-rolled steel to remove mill scale, rust, etc. but could also be used for cold-rolled steel of sufficient thickness to withstand the deformation caused by the impact of abrasive.
Who is ISO 8504‑2 - Preparation of steel substrates before application of paints for?
ISO 8504‑2 on the preparation of steel substrates before application of paints is useful for:
- Steel substrates manufacturers
- Paint manufacturers
Why should you use ISO 8504‑2 - Preparation of steel substrates before application of paints?
The ISO 8504 series provides guidance on the preparation methods that are available for cleaning steel substrates, indicating the capabilities of each of attaining specified levels of cleanliness.
The performance of protective coatings of paint and related products applied to steel is significantly affected by the state of the steel surface immediately prior to painting. The principal factors that are known to influence this performance are:
- The presence of rust and mill scale
- The presence of surface contaminants, including salts, dust, oils and greases
- The surface profile
The primary objective of surface preparation is to ensure the removal of deleterious matter and to obtain a surface that permits satisfactory adhesion of the priming paint to steel. It is also intended to assist in reducing the amounts of contaminants that initiate corrosion.
ISO 8504‑2 specifies abrasive blast-cleaning methods for the preparation of steel surfaces before coating with paints and related products. This method is the most effective method for mechanical surface preparation. It is widely applicable because this method of surface preparation has a number of versatile features. Which can bring efficiency for you in manufacturing steel substrates.
What’s changed since the last update?
BS EN ISO 8504‑2:2019 supersedes BS EN ISO 8504‑2:2001, which is withdrawn.
BS EN ISO 8504‑2:2019 includes some technical changes with respect to BS EN ISO 8504‑2:2001. These are:
- Update of Clause 2, normative references
- Editorial revision