00 Contents - Hilti Svenska AB
00 Contents - Hilti Svenska AB
00 Contents - Hilti Svenska AB
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Corrosion<br />
4.3 Fastener selection<br />
The subject of corrosion has a major influence<br />
on the suitability of a fastener and<br />
therefore also on fastener selection.<br />
For applications with no safety relevance,<br />
zinc-plated fasteners made of normal carbon<br />
Condition for use Fastener:<br />
Zinc-plated X-CR / X-BT<br />
carbon steel stainless steel<br />
Indoors, rooms without condensation<br />
and corrosive gases � �<br />
Indoors, with heavy condensation � �<br />
Short-term exposure to weather (i.e. during construction) � �<br />
Outdoors, coastal area or industrial atmosphere<br />
without chlorides � �<br />
Highly-corrosive surroundings<br />
(indoor swimming pools, highway tunnels) � �<br />
� = suitable<br />
� = not suitable<br />
For safety relevant, permanent fastenings:<br />
Use <strong>Hilti</strong> galvanized DX- and GX- fasteners only for dry, indoor applications. Use of <strong>Hilti</strong><br />
X-CR fasteners is recommended in more corrosive and/or wet atmospheres.<br />
Fasteners used in wet areas must be at least<br />
as noble or, better, more noble than the fas-<br />
Fastened component / base material Fastener:<br />
Zinc-plated X-CR / X-BT<br />
carbon steel stainless steel<br />
Construction steel (uncoated) � �<br />
Galvanized steel sheet � �<br />
Aluminum alloy � �<br />
Stainless steel sheet<br />
� = Negligible or no corrosion of fastener<br />
� �<br />
� = Heavy corrosion of fastener<br />
steel can be used without restriction.<br />
For safety-relevant, permanent fastenings,<br />
the following table shows the suitability (� )<br />
under different atmospheric conditions.<br />
tened component. The effect of contact corrosion<br />
is shown in the table below.<br />
1.32 11 / 2<strong>00</strong>7
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