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Z 20.25.5 L Cu

France AFNOR NF Z20.25.5LCu Welding consumables. Covered electrodes for manual metal arc welding of stainless and heat resisting steels. Classification and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Z20.25.5LCu / Z 20.25.5 L Cu
Category Grade Standard Region/Area Standard Content
Metals Z 20.25.5 L Cu NF A81-343 France Welding consumables. Covered electrodes for manual metal arc welding of stainless and heat resisting steels. Classification

Chemical composition(mass fraction)(wt.%) of the Z 20.25.5 L Cu

Element Min Max Similar
Si - 0.9000 -
S - 0.0300 -
P - 0.0300 -
Ni 24.0000 26.0000 -
Mo 4.0000 6.0000 -
Mn - 2.5000 -
Cr 19.0000 22.0000 -
C - 0.0400 -

Mechanical Properties of steel grade Z 20.25.5 L Cu

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)
392 (≥) 894 (≥) 44 31 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 333

Physical Properties of steel grade Z 20.25.5 L Cu

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
33 - -     0.11 -  
273 844 - 12.3 212   -  
255 - 13 22.2   214 314

Heat Treatment of steel grade Z 20.25.5 L Cu

Heat treated : 1567°C - 1171°C

Technological Curves of steel grade Z 20.25.5 L Cu

Cross Reference Table (Equivalent Grade) of Z 20.25.5 L Cu

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