What is BS EN 2516 about?
BS EN 2516 specifies several chemical methods of passivation for corrosion resisting steels (austenitic, ferritic, martensitic and precipitation hardenable) and of decontamination for a nickel or cobalt-base alloys.
Adopting these methods can enable you to determine the corrosion-resistant properties in steel parts for optimal performance in aerospace applications.
Note: Passivation shall not be used on castings, welded or brazed parts, carburized or nitrided surfaces nor on parts with mating surfaces when entrapment of acids may occur.
Who is BS EN 2516 for?
BS EN 2516 on passivation of corrosion resisting steels and decontamination of nickel-base alloys is applicable to:
- Aerospace and Defence Industries
- Agencies involved in making aerospace applications
- Spacecraft manufacturing industries
- Testing agencies involved in the inspection of aerospace products
- Manufacturers and suppliers of steels
Why should you use BS EN 2516?
BS EN 2516 covers methods of passivation for corrosion resisting steels and of decontamination for nickel or cobalt-base alloys. It creates a standardized approach for manufacturers of steel and nickel base alloy to adhere to if they supply their metallic materials for use by the aerospace and defence industry.
By adopting BS EN 2516, manufacturers can demonstrate the reliability of their steels and nickel base alloy and build trust in its use throughout the aerospace supply chain.
With BS EN 2516, you can assess the corrosion resistant resistance characteristics of a part after such treatments as machining, forming, tumbling and shot peening by removing foreign metal contamination due to these operations. As a result, you can select the right materials for your applications for overall success of the end-application. BS EN 2516 can also support your product development and research initiatives.
What’s changed since the last update?
BS EN 2516:2020 supersedes BS EN 2516:1997. BS EN 2516:2020 includes some technical changes with respect to BS EN 2516:1997. These include:
- Added applicability and limitations of the process
- Added requirements for water quality and for passivation and/or decontamination bath
- Condition of the parts prior to processing: Add of "before treatment"
- Revision of the clause pre-treatments
- Add of Table 1 "De-embrittlement in case of acid pickling"
- Absence of iron contamination: Add the case of copper sulphate test