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England B.S. 309C30 Specification for steel castings for general engineering purposes and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 309C30 / 309 C 30
Category Grade Standard Region/Area Standard Content
Metals 309 C 30 BS 3100 England Specification for steel castings for general engineering purposes

Chemical composition(mass fraction)(wt.%) of the 309 C 30

Element Min Max Similar
Si - 2.5000 -
S - 0.0500 -
P - 0.0500 -
Ni 10.0000 14.0000 -
Mo - 1.5000 -
Mn - 2.0000 -
Cr 22.0000 27.0000 -
C - 0.5000 -

Mechanical Properties of steel grade 309 C 30

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)
875 (≥) 188 (≥) 22 41 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 244

Physical Properties of steel grade 309 C 30

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
14 - -     0.42 -  
256 924 - 14.3 442   -  
371 - 21 33.2   223 123

Heat Treatment of steel grade 309 C 30

Heat treated : 1363°C - 1983°C

Technological Curves of steel grade 309 C 30

Cross Reference Table (Equivalent Grade) of 309 C 30

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