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America AWS ER409Nb 不锈钢光焊丝和填充丝标准 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: ER409Nb / ER 409Nb
Category Grade Standard Region/Area Standard Content
Metals ER 409Nb AWS A5.9/A5.9M America 不锈钢光焊丝和填充丝标准

Chemical composition(mass fraction)(wt.%) of the ER 409Nb

Element Min Max Similar
Nb - 0.7500 -
Cu - 0.7500 -
S - 0.0300 -
P - 0.0400 -
Si - 1.0000 -
Mn - 0.8000 -
Mo - 0.5000 -
Ni - 0.6000 -
Cr 10.5000 13.5000 -
C - 0.0800 -

Mechanical Properties of steel grade ER 409Nb

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)
248 (≥) 276 (≥) 34 14 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 143

Physical Properties of steel grade ER 409Nb

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 - -     0.12 -  
355 236 - 11.3 342   -  
345 - 33 24.2   114 442

Heat Treatment of steel grade ER 409Nb

Heat treated : 1196°C - 1835°C

Technological Curves of steel grade ER 409Nb

Cross Reference Table (Equivalent Grade) of ER 409Nb

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