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England B.S. 420C28 Specification for steel castings for general engineering purposes and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 420C28 / 420 C 28
Category Grade Standard Region/Area Standard Content
Metals 420 C 28 BS 3100 England Specification for steel castings for general engineering purposes

Chemical composition(mass fraction)(wt.%) of the 420 C 28

Element Min Max Similar

Mechanical Properties of steel grade 420 C 28

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)
957 (≥) 859 (≥) 31 21 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 112

Physical Properties of steel grade 420 C 28

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
42 - -     0.22 -  
378 728 - 31.3 343   -  
694 - 31 24.2   232 134

Heat Treatment of steel grade 420 C 28

Heat treated : 1256°C - 1665°C

Technological Curves of steel grade 420 C 28

Cross Reference Table (Equivalent Grade) of 420 C 28

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