Hardness Penetration Depth
Nitriding and nitrocarburising layers are
characterized by the following layer thickness
and hardness penetration depth.
The Nitriding Hardness Depth (NHT) according
to DIN 50 190-3- is the vertical distance from
the edge, where the hardness reaches the
value of the core hardness plus 50 HV 0.5
hardness limit.
The thickness of the connection zone and
the Nitriding Hardness Depth must often be
agreed with the client according to the specific
material and the application.