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England B.S. En20A Wrought steels for mechanical and allied engineering purposes and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: En20A / En20A
Category Grade Standard Region/Area Standard Content
Metals En20A BS 970 England Wrought steels for mechanical and allied engineering purposes

Chemical composition(mass fraction)(wt.%) of the En20A

Element Min Max Similar

Mechanical Properties of steel grade En20A

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)
186 (≥) 178 (≥) 23 41 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 411

Physical Properties of steel grade En20A

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
33 - -     0.31 -  
527 841 - 31.3 334   -  
296 - 14 21.2   341 212

Heat Treatment of steel grade En20A

Heat treated : 1792°C - 1997°C

Technological Curves of steel grade En20A

Cross Reference Table (Equivalent Grade) of En20A

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