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Austenitic-ferritic steels, e.g. 1.4462 (X2CrNiMoN22-5-3), are comparable to a CrNiMo-steel with 2,5 to 3% Mo. Thermoplastic polymeric materials 6

Thermoplastic polymeric materials used in these products are generally used to form cover plates, frames etc. and thus do not fulfil a primary function. It is therefore sufficient to ensure that the component/material possesses characteristics that define it as being an acceptable quality moulding or extrusion.

Extruded profiles in PVC-U shall be designated and assessed for suitability using EN 13245-1 or 3 and the associated tests in EN 13245-2. These standards allow a distinction to be made between profiles that are intended to be externally exposed and those that are for internal use only.

In determining suitability of a profile in a particular application the Approval Body shall take due account of the consequences of failure, in particular related to the costs of access and the associated dismantling of the building.

For injection moulded components, the effects of heating shall be determined, using the method described in EN 763, on 3 samples selected from each of 5 production batches.

After conditioning, no weld line shall have opened completely and no cracks or de-lamination shall penetrate more than 50 % of the thickness, at the point of injection. If 1 of any 3 specimens exhibits a failure a retest may be undertaken on 6 further specimens. If any of these samples fails the product shall be deemed unacceptable. Mineral wool

Mineral wool complying with the requirements of EN 13162 is deemed to satisfy the durability requirements for use categories Z1, Z2, Y1 and Y2. Materials not covered by a standard General

The principle of the durability tests is to select suitable physico-chemical or technological properties of the product and to check whether these properties have changed during exposure of the product to defined exposure conditions. The properties to assess shall be:

Board type products covered by ETAG 018 Part 4: see the relevant chapter of that ETAG.

Board type products other than covered by ETAG 018 Part 4 (i.e. boards specifically designed for the application in penetration seals):

A case by case approach shall be taken to define the relevant properties depending on the nature of the product. Examples of properties that may be selected are appearance (e.g. blistering, cracking), density, thickness and mechanical properties.

Blocks, plugs:


Test method





Expansion ratio 7

See EOTA TR 024 , clause 3.1.11

Expansion pressure7 (if relevant)

See EOTA TR 024, clause 3.1.12

Coatings, fillers (non-reactive):


Test method





6 This assessment is not intended to assess the durability and tightness of wrappings/casings used to protect reactive materials that are not durable on their own. These are assessed as part of the reactive component.

7 only relevant for intumescent products

ETAG 026


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