Steel susceptible to tools for cold drawn pipes, small and medium sized punching and blanking dies, rollers adjusted for sheet metal processing, thread cutting tools, wood tools and measuring instruments, reamers.
CHEMICAL COMPOSITION:
C
Si
Mn
P
S
Cr
Mo
W
V
Co
Ni
1,30-1,45
0,15-0,40
0,40-0,70
Max 0,030
Max 0,030
1,30- 1,65
-
-
0,10- 0,25
-
-
MECHANICAL PROPERTIES:
Hardness after
Tempering ºC
Symbol
Value
Soft annealing
–
HB
≤248
Quenching with 820 ºC in oil
–
HRC
62
Quenching with 820 ºC in oil and tempering
150
HRC
180
HRC
60
200
HRC
61
250
HRC
59
300
HRC
56
Technological treatment processes:
Technological treatment processes
Possible application
Temperature, °C
Hot forming
Forging
+
1000-850
Rolling
+
1000-850
Treatment
Heat treatment
Quenching
+
810-830
Tempering
+
150-260
Precipitation strengthening
Supersaturation
–
–
Ageing
–
–
Soft annealing
Above Ac1
+
770-790
Below Ac1
+
690-710
Thermochemical treatment
Nitriding
–
–
Other
–
–
INTERNATIONAL STEEL GRADES:
ISO
Czech Republic
Russia
–
–
19422
CSN 419422
12X1
GOST 5950-73
US
Japan
China
–
–
–
–
–
–
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