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Z 25.20.2

France AFNOR NF Z25.20.2 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: Z25.20.2 / Z 25.20.2
Category Grade Standard Region/Area Standard Content
Metals Z 25.20.2 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 25.20.2

Element Min Max Similar

Mechanical Properties of steel grade Z 25.20.2

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)
552 (≥) 115 (≥) 11 32 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 331

Physical Properties of steel grade Z 25.20.2

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
31 - -     0.11 -  
956 691 - 41.3 423   -  
178 - 33 12.2   131 132

Heat Treatment of steel grade Z 25.20.2

Heat treated : 1118°C - 1387°C

Technological Curves of steel grade Z 25.20.2

Cross Reference Table (Equivalent Grade) of Z 25.20.2

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