VolksWagen – TL244 ofl-r643

This standard specifies requirements for electrolytically deposited and
Cr(VI)-free post-treated zinc/nickel alloy coatings on ferrous materials and
steel parts with a tensile strength Rm≤1000 MPa according to code letter
“r” specified in VolksWagen standard VW 13750.

In particular, these coatings are also suitable for joining elements with
internal drive to avoid tje clogging of force-application sockets.

These coatings, used as heavy-duty corrosion protection )protection class
6), are especially suitable for components and systems of threaded joints
for which besides an increased corrosion load, a temperature load of up to
150°C (engine compartment or break area) is to be expected, as well as for
conducting connections (ground connections).

Thanks to their electrochemical compatibility, they are also suited for use
in contact with aluminum materials but not with magnesium materials.