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France AFNOR NF C45RR 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: C45RR / C 45 RR
Category Grade Standard Region/Area Standard Content
Metals C 45 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 C 45 RR

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0200 -
P - 0.0250 -
Ni - 0.4000 -
Mo - 0.1000 -
Mn 0.5000 0.8000 -
Cr - 0.3000 -
C 0.4200 0.4800 -
Al - 0.0300 -

Mechanical Properties of steel grade C 45 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)
124 (≥) 341 (≥) 11 31 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 413

Physical Properties of steel grade C 45 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
34 - -     0.12 -  
334 237 - 13.3 123   -  
775 - 42 31.2   143 234

Heat Treatment of steel grade C 45 RR

Heat treated : 1313°C - 1164°C

Technological Curves of steel grade C 45 RR

Cross Reference Table (Equivalent Grade) of C 45 RR

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