COULD CONSTITUENTS OF DIFFERENT MATERIALS BE MIXED?
The answer is no. For example, it would be bad practice to install the new Fixe1 316-Hanger with an expansion bolt made of PLX (duplex) material or merely common steel.
If a rock anchor has two or more components made from different materials there is the possibility of galvanic corrosion when the rock anchor is wetted by rain or, much more seriously, if it is wetted by seawater. Galvanic corrosion can be avoided if all parts of the rock anchor are made of the same material, or of material with the same electrolytic potential. If a rock anchor has a removable or replaceable part, such as a hanger, the user needs to know the construction material and be aware that a hanger or replaceable part made from a compatible material shall be used