This has mechanicals of <730 Yield (Re) & 880/1150(Rm) Tensile.
42CrMo4 'T' is supplied with a 20-25 micron deposit of hard chrome plate ground to f7 ( 0.25 Ra max).
Corrosion resistance: Acetic salt spray ISO3769 rating 9 @ 40 hrs.
Surface hardness 900/1050 HV.