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Italy UNI 04 Mechanical properties of fasteners.Nuts with proof load values.Coarse thread and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 04 / 04
Category Grade Standard Region/Area Standard Content
Metals 04 UNI EN 20898-2 Italy Mechanical properties of fasteners.Nuts with proof load values.Coarse thread

Chemical composition(mass fraction)(wt.%) of the 04

Element Min Max Similar
C - 0.5800 -
Mn 0.2500 - -
P - 0.0600 -
S - 0.1500 -
C - 0.5800 -
Mn 0.2500 - -
P - 0.0600 -
S - 0.1500 -

Mechanical Properties of steel grade 04

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)
995 (≥) 999 (≥) 14 21 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 113

Physical Properties of steel grade 04

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
24 - -     0.41 -  
557 198 - 13.3 133   -  
988 - 24 24.2   121 144

Heat Treatment of steel grade 04

Heat treated : 1787°C - 1997°C

Technological Curves of steel grade 04

Cross Reference Table (Equivalent Grade) of 04

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