It is critical to understand that is not a law. It is a harmonized standard (though technically a "code of practice") that provides a presumption of conformity with the European Pressure Equipment Directive (PED).
This article is intended as a technical guide. Always consult the latest official version of AD 2000 Merkblatt W1 and your Notified Body for specific applications. ad 2000 merkblatt w1
: Materials must undergo rigorous testing to verify quality characteristics. This typically results in an inspection certificate (e.g., EN 10204 Type 3.1 or 3.2 It is critical to understand that is not a law
The sheet applies to wrought steels for pressure vessels operating at internal or external pressures above 0.5 bar. It excludes castings and non-metallic materials. Always consult the latest official version of AD
Within this code, the of Merkblätter (datasheets) deals exclusively with materials . Specifically, AD 2000 Merkblatt W1 is titled "Materials for Pressure Vessels – Steel and Cast Steel Materials" .
Specifies which metallic materials (steels, cast iron, non-ferrous metals) are permitted for use in the construction of pressure vessels and piping according to the AD 2000 code.