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25 B 3 RR

France AFNOR NF 25B3RR 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: 25B3RR / 25 B 3 RR
Category Grade Standard Region/Area Standard Content
Metals 25 B 3 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 B 3 RR

Element Min Max Similar

Mechanical Properties of steel grade 25 B 3 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)
842 (≥) 774 (≥) 24 12 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 142

Physical Properties of steel grade 25 B 3 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
24 - -     0.33 -  
528 513 - 13.3 413   -  
868 - 33 32.2   234 123

Heat Treatment of steel grade 25 B 3 RR

Heat treated : 1771°C - 1398°C

Technological Curves of steel grade 25 B 3 RR

Cross Reference Table (Equivalent Grade) of 25 B 3 RR

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