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

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

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

Element Min Max Similar

Mechanical Properties of steel grade MnNiB

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)
388 (≥) 691 (≥) 23 33 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 232

Physical Properties of steel grade MnNiB

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
41 - -     0.12 -  
556 276 - 31.3 113   -  
597 - 34 32.2   142 134

Heat Treatment of steel grade MnNiB

Heat treated : 1679°C - 1488°C

Technological Curves of steel grade MnNiB

Cross Reference Table (Equivalent Grade) of MnNiB

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