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Yugoslavia JUS C4742 Hot work tool steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: C4742 / C 4742
Category Grade Standard Region/Area Standard Content
Metals C 4742 -- Yugoslavia Hot work tool steels

Chemical composition(mass fraction)(wt.%) of the C 4742

Element Min Max Similar
Si - - 0.3300
S 0.0500 0.0800 -
P - - 0.0270
Ni - - 0.1300
Mo - - 0.1800
Mn - - 1.4000
Cu - - 0.1700
Cr - - 1.8700
C - - 0.4100

Mechanical Properties of steel grade C 4742

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)
818 (≥) 537 (≥) 41 11 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 141

Physical Properties of steel grade C 4742

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
11 - -     0.31 -  
568 863 - 11.3 434   -  
657 - 43 41.2   131 334

Heat Treatment of steel grade C 4742

Heat treated : 1645°C - 1617°C

Technological Curves of steel grade C 4742

Cross Reference Table (Equivalent Grade) of C 4742

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