Chronifer M-17C material
is Manufactured in Rod, Bar and coil
AISI 440C ~
High carbon chromium
steel designed to provide stainless properties with maximum hardness.
After heat treatment type 440C attains the highest hardness of any stainless
steel (about 60 HRC). This stainless steel principally has been used in
bearing assemblies including bearing balls and races. In addition, it
should be considered for cutlery, needle valves, ball check valves, etc.
Coil: Cold drawn and
Bars: Ø 0-1.99mm
: Cold drawn and polished
2.00-16mm: Cold drawn, ground and polished.
in 3m 92m) Surface
Diameter h8 (h7)
Out of roundness/cylindricity:
1/2 of dia tolerance
Tolerance in length :+/-
Before heat treatment:
depending on the diagram 750-950n/mm2
843-871ºC slow furnace cooling
Max obtainable hardness
15-25 m/min (approximate
value, depending on the lubrication oil, the cutting tools, the shape of parts)