Steel susceptible to pins, rolls, bushings and other highly loaded elements, working at max. 150–200°C.
CHEMICAL COMPOSITION:
C
Mn
Si
P
S
Cr
Ni
Mo
V
W
Ti
Cu
Inne
0,32 - 0,40
0,80 - 1,10
1,10 - 1,40
Max 0,035
Max 0,035
1,10 - 1,40
Max 0,30
Max 0,10
Max 0,05
Max 0,20
Max 0,05
Max 0,25
-
MECHANICAL PROPERTIES:
Property
Symbol
Unit
After heat treatment
Ultimate tensile strength
Rm
MPa
≥ 1620
Yield stress
Re (Rp0,2)
MPa
≥ 1280
Elongation
A
%
≥ 9
Reduction of area
Z
%
≥ 40
Impact energy
KV
J
≥ 40
Technological treatment processes:
Technological treatment processes
Possible application
Temperature, °C
Hot forming
Forging
+
(1050 – 850)
Rolling
+
(1230 – 840)
Treatment
Heat treatment
Quenching
+
860-880/o
Tempering
+
500 – 650
Precipitation strengthening
Supersaturation
–
–
Ageing
–
–
Annealing
Normalising
+
(860 – 880)
Soft annealing
+
(680 – 720)
Thermochemical treatment
Carburising
–
–
Other
–
–
INTERNATIONAL STEEL GRADES:
ISO
European Union
Russia
–
–
–
–
~ 35ChGSA
GOST 4543 1971
US
Japan
China
–
–
–
–
~ 35CrMnSiA
GB 3077-88
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