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Z 80 CNS 20-02

France AFNOR NF Z80CNS20-02 Valve steels and alloys for internal combustion engines and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Z80CNS20-02 / Z 80 CNS 20-02
Category Grade Standard Region/Area Standard Content
Metals Z 80 CNS 20-02 NF A35-579 France Valve steels and alloys for internal combustion engines

Chemical composition(mass fraction)(wt.%) of the Z 80 CNS 20-02

Element Min Max Similar
W - 0.5000 -
Si 1.7500 2.5000 -
S - 0.0300 -
P - 0.0400 -
Ni 1.0000 1.7000 -
Mo - 0.5000 -
Mn - 0.8000 -
Cr 19.0000 21.0000 -
C 0.7500 0.8500 -

Mechanical Properties of steel grade Z 80 CNS 20-02

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)
638 (≥) 965 (≥) 44 31 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 112

Physical Properties of steel grade Z 80 CNS 20-02

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
13 - -     0.34 -  
819 695 - 21.3 331   -  
816 - 13 14.2   421 212

Heat Treatment of steel grade Z 80 CNS 20-02

Heat treated : 1727°C - 1355°C

Technological Curves of steel grade Z 80 CNS 20-02

Cross Reference Table (Equivalent Grade) of Z 80 CNS 20-02

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