Steel susceptible to dies for chemically aggressive materials, plastic moulds, elements of moulds for die casting of the alloys of light non-ferrous metals, tools and moulds for corrosive plastics and polymers, food industry etc.
CHEMICAL COMPOSITION:
C
Si
Mn
P
S
Cr
Mo
W
V
Co
Ni
0,33- 0,45
Max 1,00
Max 1,50
Max 0,030
Max 0,030
15,50- 17,50
0,80- 1,30
-
-
-
Max 1,00
MECHANICAL PROPERTIES:
Hardness after
Tempering ºC
Symbol
Value
Soft annealing
–
HB
≤250
Toughening
HB
300
Quenching with 1010 ºC in oil
–
HRC
49
Quenching with 1010 ºC in oil and tempering
(cooling during quenching can also be performed in the air or gradually in the salt bath at 500–550 ºC and then cooled in the air)
200
HRC
47
300
HRC
46
400
HRC
36.5
450
HRC
37
500
HRC
43
550
HRC
48
600
HRC
32.5
PHYSICAL PROPERTIES:
Property
Unit
Value
Density, ρ
g*cm-3
7.60
Thermal expansion, α20-100ºC)
K-1
10.4*10-6
Thermal conductivity, λ20ºC)
W*m-1*K-1
26
Technological treatment processes:
Technological treatment processes
Possible application
Temperature, °C
Hot forming
Forging
+
1100-750
Rolling
+
1100-750
Treatment
Heat treatment
Quenching
+
1000-1040
Tempering
+
550-650
Precipitation strengthening
Supersaturation
–
–
Ageing
–
–
Annealing
Soft annealing
+
780-820
Stress relieving
+
600-700
Thermochemical treatment
Nitriding
+
470-550
Other
–
–
INTERNATIONAL STEEL GRADES:
ISO
CEN
Russia
X38CrMo16
ISO 4957:2004
X38CrMo16
ISO 4957:2004
–
–
US
Japan
China
–
–
–
–
–
–
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