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France AFNOR NF 3/340 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: 3/340 / 3/340
Category Grade Standard Region/Area Standard Content
Metals 3/340 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 3/340

Element Min Max Similar
Ni 7.0000 10.0000 -
Mn - 10.0000 -
Fe - - -
Cr 17.0000 21.0000 -
C - 0.2000 -

Mechanical Properties of steel grade 3/340

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)
455 (≥) 663 (≥) 44 32 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 433

Physical Properties of steel grade 3/340

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
12 - -     0.41 -  
828 853 - 43.3 112   -  
422 - 43 34.2   241 423

Heat Treatment of steel grade 3/340

Heat treated : 1871°C - 1425°C

Technological Curves of steel grade 3/340

Cross Reference Table (Equivalent Grade) of 3/340

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