Corrosion handbook

34 06/21
5 HOW TO SELECT A SUITABLE
FASTENER AND INSTALLATION SYSTEM
Information about the selection tables
Hilti offers fasteners and installation systems in a wide range of suitable, cost-
efficient materials. However, the differences in corrosion behavior, the complexity
of the factors influencing corrosion and the number of national and international
standards and guidelines applicable to the field of corrosion can present a
challenge when it comes to making the right choice of material for a certain
application.
In order to provide an initial overview of the performance of the various products,
our tables show general suitability and, where applicable, also a rough estimate of
lifetime of products in some typical environments.
“Important notes” provides information that must always be taken into account
when using the tables:
Important notes
The ultimate decision on the required corrosion protection must be made by the
customer. Hilti accepts no responsibility regarding the suitability of a product for a
specific application, even if informed of the application conditions. The tables are
based on an average service life for typical applications.
For metallic coatings, e.g. zinc layer systems, the end of lifetime is the point
at which red rust is visible over a large fraction of the product and widespread
structural deterioration can occur – the initial onset of rust may occur sooner.
National or international codes, standards or regulations, customer and/or
industry-specific guidelines must be independently considered and evaluated.
The tables published in this handbook describe only a general guideline for
commonly accepted applications in typical atmospheric environments.
Suitability for a specific application can be significantly affected by localized
conditions, including but not limited to:
• Elevated temperatures and humidity
• High levels of airborne pollutants
• Direct contact with corrosive products, such as found in some types of
chemically-treated and/or acidic wood, waste water, concrete additives,
cleaning agents, etc.
• Direct contact with soil, stagnant water
• Direct contact with fresh/young concrete (less than 28 days old)
• Electrical current
• Contact with dissimilar metals
• Confined areas, e.g. crevices
• Physical damage or wear
• Extreme corrosivity due to combined effects of different influencing factors