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Russia GOST 18kp Carbon structural quality steel gauged bars with special surface finish. General specifications and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 18kp / 18kp
Category Grade Standard Region/Area Standard Content
Metals 18kp GOST 1050 Russia Carbon structural quality steel gauged bars with special surface finish. General specifications

Chemical composition(mass fraction)(wt.%) of the 18kp

Element Min Max Similar
Si - 0.0600 -
S - 0.0400 -
P - 0.0350 -
Ni - 0.3000 -
Mn 0.3000 0.5000 -
Cu - 0.2000 -
Cr - 0.1500 -
C 0.1200 0.2000 -

Mechanical Properties of steel grade 18kp

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)
124 (≥) 363 (≥) 13 11 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 314

Physical Properties of steel grade 18kp

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
12 - -     0.24 -  
933 227 - 43.3 414   -  
156 - 33 12.2   121 123

Heat Treatment of steel grade 18kp

Heat treated : 1477°C - 1691°C

Technological Curves of steel grade 18kp

Cross Reference Table (Equivalent Grade) of 18kp

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