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England B.S. 221-530 Specification for steel forgings for pressure purposes and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 221-530 / 221-530
Category Grade Standard Region/Area Standard Content
Metals 221-530 BS 1503 England Specification for steel forgings for pressure purposes

Chemical composition(mass fraction)(wt.%) of the 221-530

Element Min Max Similar
Si 0.1000 0.4000 -
S - 0.0250 -
P - 0.0300 -
Ni - 0.4000 -
Mo - 0.1000 -
Mn 0.8000 1.4000 -
Cu - 0.3000 -
Cr - 0.2500 -
C - 0.3000 -
Al met - 0.0100 -

Mechanical Properties of steel grade 221-530

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)
969 (≥) 342 (≥) 44 24 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 442

Physical Properties of steel grade 221-530

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
32 - -     0.33 -  
258 729 - 41.3 132   -  
958 - 13 14.2   321 433

Heat Treatment of steel grade 221-530

Heat treated : 1777°C - 1938°C

Technological Curves of steel grade 221-530

Cross Reference Table (Equivalent Grade) of 221-530

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