Products used for the construction and renovation of drinking water supply systems.

Assessment basis for metal materials in contact with drinking water

Addition of further materials to the Annex (positive list of metal materials suitable for drinking water hygiene):

• Inclusion of CuZn39Al-C in the category ‘copper-zinc-aluminium alloys’
• Inclusion of the new category ‘Copper-zinc-bismuth-aluminium alloys
with the material CuZn38Bi1Al-C’
• Inclusion of the new category ‘copper-zinc-silicon-tin-phosphorus alloys’ with the material CW729R (CuZn29Si1SnP).
This insertion resulted in changes to the category boundaries of the category ‘copper-zinc-silicon-phosphorus alloys’ as well as the already listed materials CW724R and CC786S
• Inclusion of the new category ‘copper-zinc-manganese-silicon-tin-aluminium alloys’ with the material CuZn36Mn1Si1Sn1Al-C
This results in numerical shifts in the positive list.
• Small adjustments result from the comparison of the chemical compositions of the already listed metal materials with the standardised chemical compositions in DIN EN 1982 (updated 12/2024) and DIN CEN/TS 13388 (or corresponding product standards).