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China 宝钢Q/BQB St52.0 管道、容器、设备结构用无缝钢管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: St52.0 / St52.0
Category Grade Standard Region/Area Standard Content
Metals St52.0 Q/BQB 203 China 管道、容器、设备结构用无缝钢管

Chemical composition(mass fraction)(wt.%) of the St52.0

Element Min Max Similar
Cu - 0.2000 -
Ni - 0.2500 -
Cr - 0.2500 -
S - 0.0200 -
P - 0.0250 -
Mn - 1.6000 -
Si - 0.5500 -
C - 0.2200 -
Ni - 0.2500 -
Cu - 0.2500 -
Cr - 0.2500 -
P - 0.0350 -
S - 0.0350 -
Mn - 1.6000 -
Si - 0.5500 -
C - 0.2200 -
P - 0.0350 -
S - 0.0350 -
Mn - 1.6000 -
Si - 0.5500 -
C - 0.2200 -
Cu - 0.2000 -
Ni - 0.2500 -
Cr - 0.2500 -
P - 0.0250 -
S - 0.0200 -
Mn - 1.6000 -
Si - 0.5500 -
C - 0.2200 -

Mechanical Properties of steel grade St52.0

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)
586 (≥) 197 (≥) 44 23 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 234

Physical Properties of steel grade St52.0

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
33 - -     0.23 -  
924 228 - 34.3 142   -  
291 - 21 11.2   433 344

Heat Treatment of steel grade St52.0

Heat treated : 1613°C - 1964°C

Technological Curves of steel grade St52.0

Cross Reference Table (Equivalent Grade) of St52.0

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