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France AFNOR NF 3/220 Welding and thermal spraying. Filer products for weld-surfacing and/or coating. Classification. Codification ot the chemical composition and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 3/220 / 3/220
Category Grade Standard Region/Area Standard Content
Metals 3/220 NF A81-381 France Welding and thermal spraying. Filer products for weld-surfacing and/or coating. Classification. Codification ot the chemical composition

Chemical composition(mass fraction)(wt.%) of the 3/220

Element Min Max Similar
Ni+Mo - 6.0000 -
Fe - - -
Cr 15.0000 20.0000 -
C - 0.2000 -

Mechanical Properties of steel grade 3/220

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)
441 (≥) 783 (≥) 23 33 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 144

Physical Properties of steel grade 3/220

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
22 - -     0.31 -  
786 715 - 32.3 323   -  
663 - 22 34.2   434 122

Heat Treatment of steel grade 3/220

Heat treated : 1513°C - 1288°C

Technological Curves of steel grade 3/220

Cross Reference Table (Equivalent Grade) of 3/220

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