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25 Mn 4 RR

France AFNOR NF 25Mn4RR Iron and steel. Continuously hot-rolled strip of non-alloy and alloy steels for cold re-rolling. Technical delivery conditions and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 25Mn4RR / 25 Mn 4 RR
Category Grade Standard Region/Area Standard Content
Metals 25 Mn 4 RR NF A36-102 France Iron and steel. Continuously hot-rolled strip of non-alloy and alloy steels for cold re-rolling. Technical delivery conditions

Chemical composition(mass fraction)(wt.%) of the 25 Mn 4 RR

Element Min Max Similar

Mechanical Properties of steel grade 25 Mn 4 RR

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)
844 (≥) 897 (≥) 11 14 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 233

Physical Properties of steel grade 25 Mn 4 RR

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
23 - -     0.14 -  
515 422 - 22.3 312   -  
266 - 11 22.2   443 344

Heat Treatment of steel grade 25 Mn 4 RR

Heat treated : 1536°C - 1298°C

Technological Curves of steel grade 25 Mn 4 RR

Cross Reference Table (Equivalent Grade) of 25 Mn 4 RR

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