Steel susceptible to the steel files, metal working tools (with a low machinability), steel tools for millstone and grindstone dressing, pull broaching rings for pipes, paper knives and engraving tools.
CHEMICAL COMPOSITION:
C
Mn
Si
P
S
Cr
Mo
W
V
Co
Cu
Ni
1,15- 1,24
0,15 -0,3
0,15 -0,3
MAX 0,025
MAX 0,025
MAX 0,15
-
-
-
-
MAX 0,2
MAX 0,2
MECHANICAL PROPERTIES:
Hardness after
Tempering ºC
Symbol
Value
Soft annealing
–
HB
Max. 207
Quenching with 760–780 ºC in water
–
HRC
63
Technological treatment processes:
Technological treatment processes
Possible application
Temperature, °C
Hot forming
Forging
+
1000-800
Rolling
Treatment
Heat treatment
Quenching
+
760-780
Tempering
+
180-300
Annealing
600-700
Soft annealing
Above Ac1
+
750-780
Below Ac1
+
680-710
Thermochemical treatment
Nitriding
–
–
Other
–
–
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