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America AWS EC309Mo Specification for stainless steel flux cored and metal cored welding electrodes and rods 4th edition and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: EC309Mo / EC309Mo
Category Grade Standard Region/Area Standard Content
Metals EC309Mo AWS A5.22/A5.22M America Specification for stainless steel flux cored and metal cored welding electrodes and rods 4th edition

Chemical composition(mass fraction)(wt.%) of the EC309Mo

Element Min Max Similar
Cu - 0.7500 -
S - 0.0300 -
P - 0.0300 -
Si 0.3000 0.6500 -
Mn 1.0000 2.5000 -
Mo 2.0000 3.0000 -
Ni 12.0000 14.0000 -
Cr 23.0000 25.0000 -
C - 0.1200 -

Mechanical Properties of steel grade EC309Mo

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)
196 (≥) 829 (≥) 33 43 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 442

Physical Properties of steel grade EC309Mo

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 -  
633 762 - 41.3 323   -  
541 - 42 43.2   241 313

Heat Treatment of steel grade EC309Mo

Heat treated : 1585°C - 1136°C

Technological Curves of steel grade EC309Mo

Cross Reference Table (Equivalent Grade) of EC309Mo

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