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Z 6 CN 18-09

France AFNOR NF Z6CN18-09 Iron and steel. Heat treatable special steels and stainless steels for externally threaded fasteners for use at low temperatures and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Z6CN18-09 / Z 6 CN 18-09
Category Grade Standard Region/Area Standard Content
Metals Z 6 CN 18-09 NF A35-559 France Iron and steel. Heat treatable special steels and stainless steels for externally threaded fasteners for use at low temperatures

Chemical composition(mass fraction)(wt.%) of the Z 6 CN 18-09

Element Min Max Similar
Si - 1.0000 -
S - 0.0300 -
P - 0.0400 -
Ni 8.0000 10.0000 -
Mn - 2.0000 -
Cr 17.0000 19.0000 -
C - 0.0700 -
Si - 1.0000 -
S - 0.0300 -
P - 0.0400 -
Ni 8.0000 11.0000 -
Mo - 0.5000 -
Mn - 2.0000 -
Cu - 1.0000 -
Cr 17.0000 20.0000 -
C - 0.0800 -
Si - 0.7500 -
S - 0.0150 -
P - 0.0400 -
Ni 8.0000 10.0000 -
Mn - 2.0000 -
Cr 17.0000 19.0000 -
C 0.0400 0.0800 -
Si - 0.7500 -
S - 0.0150 -
P - 0.0400 -
Ni 8.0000 10.0000 -
Mn - 2.0000 -
Cr 17.0000 19.0000 -
C 0.0400 0.0800 -
Si - 1.0000 -
S - 0.0300 -
P - 0.0400 -
Ni 8.0000 10.0000 -
Mn - 2.0000 -
Cr 17.0000 19.0000 -
C - 0.0700 -

Mechanical Properties of steel grade Z 6 CN 18-09

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)
234 (≥) 541 (≥) 31 23 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 342

Physical Properties of steel grade Z 6 CN 18-09

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
24 - -     0.34 -  
227 234 - 41.3 421   -  
823 - 31 22.2   413 413

Heat Treatment of steel grade Z 6 CN 18-09

Heat treated : 1326°C - 1796°C

Technological Curves of steel grade Z 6 CN 18-09

Cross Reference Table (Equivalent Grade) of Z 6 CN 18-09

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