GB/T 3077 50CrMo4 Alloy Steel Plate

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.