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EU EN C55R 淬火和回火钢 - 第1部分:一般交货技术条件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: C55R / C 55 R
Category Grade Standard Region/Area Standard Content
Metals C 55 R EN 10083-1 EU 淬火和回火钢 - 第1部分:一般交货技术条件

Chemical composition(mass fraction)(wt.%) of the C 55 R

Element Min Max Similar
Mo - 0.1000 -
Ni - 0.4000 -
Cr - 0.4000 -
P - 0.0350 -
S 0.0200 0.0400 -
Mn 0.6000 0.9000 -
Si - 0.4000 -
C 0.5200 0.6000 -
Si - 0.4000 -
S 0.0200 0.0400 -
P - 0.0300 -
Ni - 0.4000 -
Mn 0.6000 0.9000 -
Cr - 0.4000 -
C 0.5200 0.6000 -
Si - 0.4000 -
S 0.0200 0.0400 -
P - 0.0350 -
Ni - 0.4000 -
Mo - 0.1000 -
Mn 0.6000 0.9000 -
Cr+Mo+Ni - 0.6300 -
Cr - 0.4000 -
C 0.5200 0.6000 -

Mechanical Properties of steel grade C 55 R

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)
541 (≥) 191 (≥) 33 24 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 314

Physical Properties of steel grade C 55 R

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
14 - -     0.12 -  
681 546 - 43.3 343   -  
417 - 41 23.2   341 123

Heat Treatment of steel grade C 55 R

Heat treated : 1942°C - 1969°C

Technological Curves of steel grade C 55 R

Cross Reference Table (Equivalent Grade) of C 55 R

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