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Z 53 CMNNb 21-09-02 Az

France AFNOR NF Z53CMNNb21-09-02Az Valve steels and alloys for internal combustion engines and Mechanical Properties, Chemical Element, Cross Reference.

Category Grade Standard Region/Area Standard Content
Metals Z 53 CMNNb 21-09-02 Az NF A35-579 France Valve steels and alloys for internal combustion engines

Chemical composition(mass fraction)(wt.%) of the Z 53 CMNNb 21-09-02 Az

Element Min Max Similar
W - 0.5000 -
Si - 0.2500 -
S - 0.0300 -
P - 0.0400 -
Ni 3.2500 4.5000 -
Nb 1.7000 2.3000 -
N 0.3800 0.5500 -
Mo - 0.5000 -
Mn 8.0000 10.0000 -
Cr 20.0000 22.0000 -
C 0.4800 0.5800 -

Mechanical Properties of steel grade Z 53 CMNNb 21-09-02 Az

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)
634 (≥) 364 (≥) 21 13 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 411

Physical Properties of steel grade Z 53 CMNNb 21-09-02 Az

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 - -     0.34 -  
281 283 - 41.3 243   -  
842 - 33 13.2   333 231

Heat Treatment of steel grade Z 53 CMNNb 21-09-02 Az

Heat treated : 1865°C - 1435°C

Technological Curves of steel grade Z 53 CMNNb 21-09-02 Az

Cross Reference Table (Equivalent Grade) of Z 53 CMNNb 21-09-02 Az

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