Steel susceptible to cold shear knives, pneumatic tools, such as cold setts, chisels, riveting presses, mandrels, paper and wood cutting knives, cold striking stamps, ejector pins, bending moulds, demurring machines, cutting tools for machines, tools for stamping, upsetting tools, cutting tools for plates up to 10mm, pressure casting dies, drills, mill cutters, blanking dies for metal sheet products with a higher thickness and rolls for flatteners, air hammers etc.
CHEMICAL COMPOSITION:
C
Si
Mn
P
S
Cr
Mo
W
V
Co
Ni
0,55-0,65
0,70-1,00
0,15-0,45
Max 0,030
Max 0,030
0,90-1,20
-
1,70-2,20
0,10-0,20
-
-
MECHANICAL PROPERTIES:
Hardness after
Tempering ºC
Symbol
Value
Soft annealing
–
HB
≤229
Quenching with 910 ºC in oil
–
HRC
62.5
Quenching with 910 ºC in oil and tempering
180
HRC
≥58
200
HRC
60
225
HRC
59.5
250
HRC
59
300
HRC
57.5
350
HRC
55.5
400
HRC
53.5
450
HRC
51
PHYSICAL PROPERTIES:
Property
Unit
Value
Density, ρ
g*cm-3
7.95
Thermal expansion, α20-100ºC)
K-1
12.4*10-6
Thermal conductivity, λ55ºC)
W*m-1*K-1
34.2
Technological treatment processes:
Technological treatment processes
Possible application
Temperature, °C
Hot forming
Forging
+
1050-850
Rolling
+
1050-850
Treatment
Heat treatment
Quenching
+
900-920
Tempering
+
170-190
Precipitation strengthening
Supersaturation
–
–
Ageing
–
–
Annealing
Soft annealing
+
710-740
Stress relieving
+
600-700
Thermochemical treatment
Nitriding
–
–
Other
–
–
INTERNATIONAL STEEL GRADES:
ISO
CEN
Russia
60WCrV8
ISO 4957:2004
60WCrV8
ISO 4957:2004
~6HW2SF
GOST 5950-73
US
Japan
China
~S1
ASTM A 681-91
–
–
~6CrW2Si
GB 1299-85
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