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Z 2 NKD 18.8

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France AFNOR NF Z2NKD18.8 Non standardized steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Z2NKD18.8 / Z 2 NKD 18.8
Category Grade Standard Region/Area Standard Content
Metals Z 2 NKD 18.8 -- France Non standardized steels

Chemical composition(mass fraction)(wt.%) of the Z 2 NKD 18.8

Element Min Max Similar
Ti - 0.7000 -
Si - 0.1000 -
S - 0.0250 -
P - 0.0300 -
Ni 17.0000 19.0000 -
Mo 4.6000 5.2000 -
Mn - 0.1000 -
Co - 9.5000 -
C - 0.0300 -

Mechanical Properties of steel grade Z 2 NKD 18.8

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 (≥) 443 (≥) 23 21 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 121

Physical Properties of steel grade Z 2 NKD 18.8

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
44 - -     0.41 -  
291 633 - 34.3 232   -  
187 - 43 31.2   114 222

Heat Treatment of steel grade Z 2 NKD 18.8

Heat treated : 1598°C - 1788°C

Technological Curves of steel grade Z 2 NKD 18.8

Cross Reference Table (Equivalent Grade) of Z 2 NKD 18.8

Grade Standard Country Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1
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