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Russia GOST A27S Rolled steel for shipbuilding. Specifications and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A27S / A27S
Category Grade Standard Region/Area Standard Content
Metals A27S GOST 5521 Russia Rolled steel for shipbuilding. Specifications

Chemical composition(mass fraction)(wt.%) of the A27S

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0400 -
P - 0.0400 -
Ni - 0.4000 -
Mn 0.6000 1.4000 -
Cu - 0.3500 -
Cr - 0.3000 -
C - 0.1800 -
Al 0.0150 0.0600 -

Mechanical Properties of steel grade A27S

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)
722 (≥) 863 (≥) 22 32 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 113

Physical Properties of steel grade A27S

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
23 - -     0.14 -  
788 334 - 12.3 113   -  
527 - 21 43.2   333 311

Heat Treatment of steel grade A27S

Heat treated : 1985°C - 1248°C

Technological Curves of steel grade A27S

Cross Reference Table (Equivalent Grade) of A27S

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