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England B.S. 622/690 Steels for pressure purposes. Specification for alloy steels: plates and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 622/690 / 622/690
Category Grade Standard Region/Area Standard Content
Metals 622/690 BS 1501-2 England Steels for pressure purposes. Specification for alloy steels: plates

Chemical composition(mass fraction)(wt.%) of the 622/690

Element Min Max Similar

Mechanical Properties of steel grade 622/690

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)
121 (≥) 571 (≥) 23 13 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 332

Physical Properties of steel grade 622/690

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
24 - -     0.23 -  
734 564 - 33.3 332   -  
884 - 21 44.2   424 224

Heat Treatment of steel grade 622/690

Heat treated : 1835°C - 1341°C

Technological Curves of steel grade 622/690

Cross Reference Table (Equivalent Grade) of 622/690

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