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MCU14/0056 Response to SARA - Consulting Report
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Original PDF page 113, section 1. The text section number identifies this passage in the reader.
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Log in to see the plans as drawnEN 858-1:2002 (E)
8.1.3.2 Properties
8.1.3.2.1 Dry film thickness
The dry film thickness shall be determined in accordance with !SO 2808 and the results shall be in accordance with
6.2.6.4 a).
For coatings on steel substrates a non-destructive test shall be applied using a film thickness gauge, e.g.
magneto-inductive, with an accuracy of at least 10 um.
For coatings on concrete substrates, a destructive test shall be used, e. g. a dial thickness gauge.
8.1.3.2.2 Adhesion
The adhesion shall be determined by the pull-off test in accordance with ISO 4624 and the results shall be in
accordance with 6.2.6.4 b).
Where physical constraints prevent the pull-off test being carried out on finished products, this test may be replaced
by the cross-cut test in accordance with ISO 2409, using glass test pieces. The result shall meet, at least, class | of
ISO 2409.
8.1.3.2.3 Impact resistance
The impact resistance shall be determined by the falling weight test in accordance with ISO 6272 using a bali with a
diameter of 15,9 mm and the results shall be in accordance with 6.2.6.4 c).
8.1.3.2.4 Scratch resistance
The scratch resistance shall be determined in accordance with ISO 1518 and the results shall be in accordance
with 6.2.6.4 d).
8.1.3.2.5 Porosity
The porosity shall be determined in accordance with the following spark test:
The surface shall be dry for this test. Use spark apparatus with an adjustable voltage. Adjust the spark length to
twice the established thickness of the coating and apply 600 V per 100 um of dry film thickness. Move the electrode
slowly over the entire surface of the coating. No spark shall appear in order to meet the requirements in 6.2.6.4 e).
If the coating contains conducting pigments, and has been applied to a steel substrate, the spark test may be
replaced by the following resistivity test: .
Use test apparatus consisting of a micro-ampere meter connected in series with a potentiometer and a
90 V battery. Connect the ampere meter to a small sponge. To increase the conductivity and penetrating capacity,
moisten the sponge with a mixture of the following:
1 part by volume— 25 % ({m/m) ammonia
5 parts by volume —96 % (m/m) ethanol
94 parts by volume = - distilled water
Connect the battery, using an elastic wire with a clamp, to the surface of the steel substrate. Move the sponge
slowly over the entire surface of the coating. No deflection of the ampere meter needle shall appear in order to
meet the requirements in 6.2.6.4 e).
48 This is a licensed reproduction produced by SAI Global Ltd, an authorized distributor of British Standards
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