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England B.S. 304S71 Specification for steels for fired and unfired pressure vessels: sections and bars and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 304S71 / 304 S 71
Category Grade Standard Region/Area Standard Content
Metals 304 S 71 BS 1502 England Specification for steels for fired and unfired pressure vessels: sections and bars

Chemical composition(mass fraction)(wt.%) of the 304 S 71

Element Min Max Similar
Si - 1.0000 -
S - 0.0300 -
P - 0.0450 -
Ni 11.0000 13.0000 -
Mn - 2.0000 -
Cr 17.0000 19.0000 -
C - 0.0700 -
Si - 1.0000 -
S - 0.0300 -
P - 0.0450 -
Ni 8.0000 11.0000 -
N 0.1200 0.2200 -
Mn - 2.0000 -
Cr 17.0000 19.0000 -
C - 0.0700 -

Mechanical Properties of steel grade 304 S 71

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)
411 (≥) 784 (≥) 41 43 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 412

Physical Properties of steel grade 304 S 71

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
34 - -     0.24 -  
376 786 - 44.3 243   -  
754 - 33 43.2   332 123

Heat Treatment of steel grade 304 S 71

Heat treated : 1879°C - 1997°C

Technological Curves of steel grade 304 S 71

Cross Reference Table (Equivalent Grade) of 304 S 71

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