Steel susceptible for moulds for die-casting of light metals, loaded parts of presses, highly loaded dies for presses, upsetting punches, die inserts and tools for fusible alloy extrusion. Tools for the manufacturing of sleeves, for the manufacturing of screws, nuts, rivets and pins
CHEMICAL COMPOSITION:
C
Si
Mn
P
S
Cr
Mo
W
V
Co
Ni
0,33-0,41
0,80-1,20
0,25-0,50
Max 0,030
Max 0,030
4,80-5,50
1,10-1,50
-
0,30-0,50
-
-
MECHANICAL PROPERTIES:
Hardness after
Tempering ºC
Symbol
Value
Soft annealing
–
HB
≤229
Quenching with 1020 ºC in oil
–
HRC
54
Quenching with 1020 ºC in oil and tempering
(cooling during quenching can be performed gradually in the salt bath at around 550 ºC and then cooled in the air)
550
HRC
≥48
350
HRC
53.5
400
HRC
54.5
450
HRC
55.5
500
HRC
56
550
HRC
52.5
600
HRC
46
650
HRC
39
PHYSICAL PROPERTIES:
Property
Unit
Value
Density, ρ
g*cm-3
7.79
Thermal expansion, α20-100ºC)
K-1
10.7*10-6
Thermal conductivity, λ20ºC)
W*m-1*K-1
38
Technological treatment processes:
Technological treatment processes
Possible application
Temperature, °C
Hot forming
Forging
+
1100-850
Rolling
+
1100-850
Treatment
Heat treatment
Quenching
+
980-1030
Tempering
+
450-550
Precipitation strengthening
Supersaturation
–
–
Ageing
–
–
Annealing
Softening
+
780-820
Stress relieving
+
600-650
Thermochemical treatment
Nitriding
+
470-540
Other
–
–
INTERNATIONAL STEEL GRADES:
ISO
CEN
Russia
X37CrMoV5-1
ISO 4957:2004
X37CrMoV5-1
ISO 4957:2004
4H5MFS
GOST 5950-73
US
Japan
China
H11
ASTM A 681-91
SKD 6
JIS G 4404-1983
4Cr5MoSiV
GB 1299-85
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