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Spain UNE 8E-DF Steels for cold heading and cold extruding. Carbon steels not intented for heat treatment and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 8E-DF / 8 E-DF
Category Grade Standard Region/Area Standard Content
Metals 8 E-DF UNE 36032 Spain Steels for cold heading and cold extruding. Carbon steels not intented for heat treatment

Chemical composition(mass fraction)(wt.%) of the 8 E-DF

Element Min Max Similar
S - 0.0400 -
P - 0.0400 -
N - 0.0080 -
Mn 0.3000 0.6000 -
C 0.0500 0.1000 -

Mechanical Properties of steel grade 8 E-DF

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)
125 (≥) 517 (≥) 11 33 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 331

Physical Properties of steel grade 8 E-DF

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
12 - -     0.23 -  
751 463 - 32.3 342   -  
132 - 42 31.2   431 421

Heat Treatment of steel grade 8 E-DF

Heat treated : 1949°C - 1817°C

Technological Curves of steel grade 8 E-DF

Cross Reference Table (Equivalent Grade) of 8 E-DF

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