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Yugoslavia JUS C4321 Ball and roller bearing steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: C4321 / C 4321
Category Grade Standard Region/Area Standard Content
Metals C 4321 JUS C.B0.601 Yugoslavia Ball and roller bearing steels

Chemical composition(mass fraction)(wt.%) of the C 4321

Element Min Max Similar
Si - 0.4000 -
S - 0.0350 -
P - 0.0350 -
Mn 1.1000 1.4000 -
Cr 1.0000 1.3000 -
C 0.1700 0.2200 -

Mechanical Properties of steel grade C 4321

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
252 (≥) 149 (≥) 12 42 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 411

Physical Properties of steel grade C 4321

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
13 - -     0.44 -  
832 518 - 12.3 444   -  
887 - 14 41.2   422 321

Heat Treatment of steel grade C 4321

Heat treated : 1953°C - 1888°C

Technological Curves of steel grade C 4321

Cross Reference Table (Equivalent Grade) of C 4321

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