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Z 19.9 Nb

France AFNOR NF Z19.9Nb 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: Z19.9Nb / Z 19.9 Nb
Category Grade Standard Region/Area Standard Content
Metals Z 19.9 Nb 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 19.9 Nb

Element Min Max Similar

Mechanical Properties of steel grade Z 19.9 Nb

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)
145 (≥) 442 (≥) 21 12 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 141

Physical Properties of steel grade Z 19.9 Nb

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 - -     0.11 -  
221 542 - 41.3 431   -  
757 - 34 43.2   424 222

Heat Treatment of steel grade Z 19.9 Nb

Heat treated : 1795°C - 1732°C

Technological Curves of steel grade Z 19.9 Nb

Cross Reference Table (Equivalent Grade) of Z 19.9 Nb

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