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France AFNOR NF 100CD7 Iron and steel. Steels for bearings. Types and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 100CD7 / 100 CD 7
Category Grade Standard Region/Area Standard Content
Metals 100 CD 7 NF A35-565 France Iron and steel. Steels for bearings. Types

Chemical composition(mass fraction)(wt.%) of the 100 CD 7

Element Min Max Similar
Si 0.2000 0.4500 -
S - 0.0250 -
P - 0.0300 -
Mo 0.1500 0.3000 -
Mn 0.2500 0.4500 -
Fe - - -
Cu - 0.3500 -
Cr 1.6500 1.9500 -
C 0.9000 1.0500 -

Mechanical Properties of steel grade 100 CD 7

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)
148 (≥) 898 (≥) 31 24 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 221

Physical Properties of steel grade 100 CD 7

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 - -     0.43 -  
287 741 - 11.3 214   -  
229 - 13 24.2   113 213

Heat Treatment of steel grade 100 CD 7

Heat treated : 1514°C - 1992°C

Technological Curves of steel grade 100 CD 7

Cross Reference Table (Equivalent Grade) of 100 CD 7

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