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England B.S. MnMoB Specification for low alloy steel electrodes for manual metal-arc welding and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: MnMoB / MnMoB
Category Grade Standard Region/Area Standard Content
Metals MnMoB BS 2493 England Specification for low alloy steel electrodes for manual metal-arc welding

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

Element Min Max Similar

Mechanical Properties of steel grade MnMoB

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)
835 (≥) 987 (≥) 23 14 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 423

Physical Properties of steel grade MnMoB

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
13 - -     0.13 -  
345 688 - 32.3 111   -  
894 - 33 34.2   112 213

Heat Treatment of steel grade MnMoB

Heat treated : 1946°C - 1515°C

Technological Curves of steel grade MnMoB

Cross Reference Table (Equivalent Grade) of MnMoB

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