Nitriding Steels

 

Are heat treatable steels which, owing to their nitride-forming additions (aluminium, chromium, molbdenum) are particularly suited for gas nitriding and tuffriding.

Nitriding steels are employed for components which are subjected to heavy wear and severe pressures, must exhibit high surface hardness and good core strength. The improved surface hardness and wear resistance impart outstanding sliding and running properties to the steel parts. The heavy compression stresses within the nitrided surface layer considerably improve fatigue strength.

Maximum hardness of the nitrided case (900-1200 HV) can be attained in aluminium alloyed steels. For steels containing chromium and molybdenum, the obtainable case hardness is somewhat lower (750-900 HV).


 

V820 - 1.8550

HIGH TENSILE NITRIDING STEEL

COMPOSITION %

C

Si

Mn

Cr

Mo

Ni

V

W

Co

 

0.36

0.30

0.55

1.70

0.20

1.00

-

-

0.95

COLOUR CODE : ORANGE & BLACK

PROPERTIES AND APPLICATIONS :

High surface hardness and wear resistance. Suitable for large heat treated sections.
Cam discs, cams, pinion shafts, large measuring tools, injection pump parts, valve spools and pistol pins.
This steel is supplied in the hardened and tempered condition.