50CrMo4 is one of the last grades that is classified as structural steel for thermal improvement and its only similar steel grade is 50H - not containing Molybdenum.
50CrMo4 steel with a particular composition are dedicated for vehicles and machines that require high hardness and are subject to strong bending, twisting, abrasion and wear loads.
Chemical composition (%) of steel 50CrMo4:
|
C
|
Si
|
Mn
|
P
|
S
|
Cr
|
Mo
|
|
0.46 - 0.54
|
max 0.4
|
0.5 - 0.8
|
max 0.025
|
max 0.035
|
0.9 - 1.2
|
0.15 - 0.3
|
GB/T 3077 50CrMo4 Mechanical properties:
|
Yield
Rp0.2 (MPa)
|
Tensile
Rm (MPa)
|
Impact
KV/Ku (J)
|
Elongation
A (%)
|
|
182 (≥)
|
769 (≥)
|
44
|
32
|
GB/T 3077 50CrMo4 steel application:
50CrMo4 steel is used as semi-finished products for the manufacture of components such as crankshafts, cogwheels, heavy-duty axles, gears, valves, heavy-duty screws, thrust rollers, guides, articulated joints, thrust rings, bolts or bushes.