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England B.S. BT3 Specification for steel castings for general engineering purposes and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: BT3 / BT 3
Category Grade Standard Region/Area Standard Content
Metals BT 3 BS 3100 England Specification for steel castings for general engineering purposes

Chemical composition(mass fraction)(wt.%) of the BT 3

Element Min Max Similar

Mechanical Properties of steel grade BT 3

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)
956 (≥) 884 (≥) 44 31 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 214

Physical Properties of steel grade BT 3

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
31 - -     0.22 -  
838 893 - 12.3 132   -  
751 - 44 14.2   121 134

Heat Treatment of steel grade BT 3

Heat treated : 1327°C - 1714°C

Technological Curves of steel grade BT 3

Cross Reference Table (Equivalent Grade) of BT 3

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