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France AFNOR NF Z8N09 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: Z8N09 / Z8N09
Category Grade Standard Region/Area Standard Content
Metals Z8N09 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 Z8N09

Element Min Max Similar
Si - 0.4000 -
S - 0.0250 -
P - 0.0300 -
Ni 8.5000 10.0000 -
Mn 0.3000 0.8000 -
Cr+Cu+Mo - 0.5000 -
C - 0.1200 -
Al 0.0150 - -
Si - 0.3000 -
S - 0.0300 -
P - 0.0300 -
Ni 8.5000 10.0000 -
Mn 0.3000 0.8000 -
C - 0.1000 -
Al 0.0150 - -
Si - 0.3000 -
S - 0.0300 -
P - 0.0300 -
Ni 8.5000 10.0000 -
Mn 0.3000 0.8000 -
C - 0.1000 -
Al met 0.0150 - -

Mechanical Properties of steel grade Z8N09

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)
975 (≥) 883 (≥) 42 34 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 321

Physical Properties of steel grade Z8N09

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 -  
714 544 - 23.3 244   -  
356 - 13 43.2   233 321

Heat Treatment of steel grade Z8N09

Heat treated : 1816°C - 1387°C

Technological Curves of steel grade Z8N09

Cross Reference Table (Equivalent Grade) of Z8N09

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