Our members:   Republik Österreich   België   Česká republika   République française   Bundesrepublik Deutschland   Italia   United Kingdom of Great Britain and Northern Ireland   Nederland   Reino de España   Schweizerische Eidgenossenschaft   Magyar Köztársaság   Rzeczpospolita Polska   Slovensko   Turkey

Members Login:

Deutsche Version deutsche Version



Unified corrosion test method

TC166 has asked SC2 to start the work on unifying the test method for metal chimneys.


Currently, 3 different corrosion-tests (V1, V2, V3) are mentioned in 1856-1. The system therefore is complicated, as the connection between corrosion classes and corrosion test has to be made in national legislation. TC166 has made the decision 5 years ago, that in the future only one test should be in place. This working group should prepare a new draft.

Discussed points:

  • Future test should be based on current V2-test, with alterations
  • Duration of test: No research available on how long is the minimum time for corrosion tests (V2=30 days). Pre normative research would be required – not favored by participants as too long and expensive. Instead, experience of TÃœV will be trusted.
  • Corrosion classes: Instead of 3, 4 classes will be in the future. Class 3 for wood (woodlogs, chips, pellets), class 4 for all other fuels (e.g. coal, new fuels like powercorn, etc.)
  • Composition of flue gas: Most important point during the meeting. For the different corrosion classes (and thus materials) the content of Cl and S have been defined as follows:
    - Class 1 (gas): same as currently V1-test
    - Class 2 (oil): same as V2 now
    - Class 3 (wood): not clear yet. Currently, tests in France are running to get basis for decision. To be defined at next meeting.
    - Class 4 (coal, new fuels, ..): to be defined at next meeting.

Next meeting: October 2007

The minutes of this meeting can be obtained in the standardization-area (login required).

« back to the news overview...

Key Visual