The is a technical standard specifying the requirements for flat products (plate, sheet, strip, and wide flats) made of unalloyed and alloyed ferritic steels used in the construction of pressure vessels. It is part of the broader AD 2000 Code , which ensures compliance with the European Pressure Equipment Directive (PED). 1. Scope and Application Material Types : Unalloyed and alloyed ferritic steels.
is the first and most fundamental of the material-related code sheets within the AD 2000 series. While the AD 2000 series includes separate sheets for specific material types (e.g., W2 for low-alloy steels, W10 for creep-resistant steels), W1 establishes the general principles for the use of metallic materials. ad 2000 merkblatt w1
It does not cover materials that are already covered by other specific European Harmonized Standards (like EN 13445 for unfired pressure vessels), but rather provides an alternative, and often more conservative, route to compliance. The is a technical standard specifying the requirements
If a material is listed in W1, the route to approval is straightforward, provided the material certificate meets the specified inspection criteria. Scope and Application Material Types : Unalloyed and
A: You must either reject the material, or perform a retest per AD 2000 W1 rules (usually double the number of samples). If the retest fails, the heat is rejected.
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.
