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China GB B409Nb 不锈钢焊丝和焊带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: B409Nb / B409Nb
Category Grade Standard Region/Area Standard Content
Metals B409Nb GB/T 29713 China 不锈钢焊丝和焊带

Chemical composition(mass fraction)(wt.%) of the B409Nb

Element Min Max Similar
C - 0.1200 -
Si - 0.5000 -
Mn - 0.6000 -
P - 0.0300 -
S - 0.0300 -
Cr 10.5000 13.5000 -
Ni - 0.6000 -
Mo - 0.7500 -
Cu - 0.7500 -
Nb - 1.0000 -

Mechanical Properties of steel grade B409Nb

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)
662 (≥) 527 (≥) 31 41 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 442

Physical Properties of steel grade B409Nb

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 - -     0.42 -  
797 529 - 42.3 433   -  
432 - 22 14.2   434 443

Heat Treatment of steel grade B409Nb

Heat treated : 1261°C - 1667°C

Technological Curves of steel grade B409Nb

Cross Reference Table (Equivalent Grade) of B409Nb

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