Annealed. Core hardness = 300 HV0,3. After nitriding >1100HV0,3 and 80-100 um layer thickness which serves for the application just fine.
before pickling Ra <0,4 um and Rz < 1,6 um and after pickling both increased e.g. Rz = 5 um. We added passivation after pickling and yes, you are correct...