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Russia GOST St3kp Common quality carbon steel. Grades and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: St3kp / St3kp
Category Grade Standard Region/Area Standard Content
Metals St3kp GOST 380 Russia Common quality carbon steel. Grades

Chemical composition(mass fraction)(wt.%) of the St3kp

Element Min Max Similar
S - 0.0600 -
P - 0.0700 -
N - 0.0100 -
C - 0.2300 -
Si - 0.0500 -
S - 0.0500 -
P - 0.0400 -
Ni - 0.3000 -
N - 0.0100 -
Mn 0.3000 0.6000 -
Cu - 0.3000 -
Cr - 0.3000 -
C 0.1400 0.2200 -
As - 0.0800 -
Si - 0.0500 -
S - 0.0500 -
P - 0.0400 -
Ni - 0.3000 -
N - 0.0100 -
Mn 0.3000 0.6000 -
Cu - 0.3000 -
Cr - 0.3000 -
C 0.1400 0.2200 -
As - 0.0800 -

Mechanical Properties of steel grade St3kp

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)
594 (≥) 799 (≥) 44 34 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 311

Physical Properties of steel grade St3kp

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
41 - -     0.42 -  
956 113 - 33.3 244   -  
994 - 12 12.2   124 241

Heat Treatment of steel grade St3kp

Heat treated : 1979°C - 1629°C

Technological Curves of steel grade St3kp

Cross Reference Table (Equivalent Grade) of St3kp

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