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Germany DIN 34Cr4 Open die steel forging for general engineering purposes - part 3 : alloy special steels pies forgs en acier pour usage gal. partie 3 : aciers spiaux alli and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 34Cr4 / 34 Cr 4
Category Grade Standard Region/Area Standard Content
Metals 34 Cr 4 DIN EN 10250-3 Germany Open die steel forging for general engineering purposes - part 3 : alloy special steels pies forgs en acier pour usage gal. partie 3 : aciers spiaux alli

Chemical composition(mass fraction)(wt.%) of the 34 Cr 4

Element Min Max Similar
Cr 0.9000 1.2000 -
P - 0.0350 -
S - 0.0350 -
Mn 0.6000 0.9000 -
Si - 0.4000 -
C 0.3000 0.3700 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0350 -
Mn 0.6000 0.9000 -
Cr 0.9000 1.2000 -
C 0.3000 0.3700 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0250 -
Mn 0.6000 0.9000 -
Cr 0.9000 1.2000 -
C 0.3000 0.3700 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0350 -
Mn 0.6000 0.9000 -
Cr 0.9000 1.2000 -
C 0.3000 0.3700 -

Mechanical Properties of steel grade 34 Cr 4

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)
777 (≥) 985 (≥) 43 23 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 443

Physical Properties of steel grade 34 Cr 4

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
21 - -     0.13 -  
327 322 - 14.3 422   -  
858 - 12 14.2   314 334

Heat Treatment of steel grade 34 Cr 4

Heat treated : 1619°C - 1678°C

Technological Curves of steel grade 34 Cr 4

Cross Reference Table (Equivalent Grade) of 34 Cr 4

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