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China GB B309L 不锈钢焊丝和焊带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: B309L / B309L
Category Grade Standard Region/Area Standard Content
Metals B309L GB/T 29713 China 不锈钢焊丝和焊带

Chemical composition(mass fraction)(wt.%) of the B309L

Element Min Max Similar
C - 0.0300 -
Si - 0.6500 -
Mn 1.0000 2.5000 -
P - 0.0300 -
S - 0.0300 -
Cr 23.0000 25.0000 -
Ni 12.0000 14.0000 -
Mo - 0.7500 -
Cu - 0.7500 -

Mechanical Properties of steel grade B309L

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)
743 (≥) 721 (≥) 33 33 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 224

Physical Properties of steel grade B309L

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
32 - -     0.44 -  
788 842 - 14.3 122   -  
286 - 23 21.2   313 323

Heat Treatment of steel grade B309L

Heat treated : 1533°C - 1182°C

Technological Curves of steel grade B309L

Cross Reference Table (Equivalent Grade) of B309L

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