Steel susceptible to cutting tools highly exposed on stresses, punching tools for thin steel plates, cutters for steel sheets and strips, pull broaches, profile rolls, flanges, thread tools, deep drawing tools, pressing tools for ceramic and pharmaceutical industries, wire drawing dies, tools not subject to high impacts, blanking dies, piercing punches, broaching rings, cold work demurring machines, thread jaw cutters, simpler cutting plates for blanking dies, electrolytic siliceous and other sheet-metal stamping tools and circular tools.
CHEMICAL COMPOSITION:
C
Si
Mn
P
S
Cr
Mo
W
V
Co
Ni
1,90- 2,20
0,10- 0,60
0,20- 0,60
Max 0,030
Max 0,030
11,00- 13,00
-
-
-
-
-
MECHANICAL PROPERTIES:
Hardness after
Tempering ºC
Unit
Value
Softening
–
HB
≤248
Quenching with 970 ºC in oil
–
HRC
64.5
Quenching with 970 ºC in oil and tempering
180
HRC
≥62
200
HRC
63
250
HRC
62
350
HRC
59
400
HRC
57.5
450
HRC
56
500
HRC
54
550
HRC
51
PHYSICAL PROPERTIES:
Property
Unit
Value
Density, ρ
g*cm-3
7.65
Linear expansivity, α20-100ºC)
K-1
10.2*10-6
Specific thermal conductivity, λ20ºC)
W*m-1*K-1
17
Technological treatment processes:
Technological treatment processes
Possible application
Temperature, °C
Forming processes
Forging
+
1050-850
Rolling
+
1050-850
Heat treatment
Thermal hardening
Quenching
+
960-1000
Tempering
+
170-520
Precipitation hardening
Supersaturation
–
–
Ageing
–
–
Annealing
Softening
+
820-860
Stress relieving
+
600-700
Thermochemical treatment
Nitriding
–
–
Other
–
–
INTERNATIONAL STEEL GRADES:
ISO
CEN
Russia
X210Cr12
ISO 4957:2004
X210Cr12
ISO 4957:2004
H12
GOST 5950-73
US
Japan
China
~D3
ASTM A 681-91
~SKD 1
JIS G 4404-1983
Cr12
GB 1299-85
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