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France AFNOR NF Z22.12 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: Z22.12 / Z 22.12
Category Grade Standard Region/Area Standard Content
Metals Z 22.12 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 22.12

Element Min Max Similar

Mechanical Properties of steel grade Z 22.12

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)
821 (≥) 515 (≥) 11 44 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 241

Physical Properties of steel grade Z 22.12

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 - -     0.22 -  
634 735 - 11.3 124   -  
892 - 23 11.2   312 434

Heat Treatment of steel grade Z 22.12

Heat treated : 1782°C - 1625°C

Technological Curves of steel grade Z 22.12

Cross Reference Table (Equivalent Grade) of Z 22.12

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