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Description

China GBT U20502 China structural steel and alloy steel and U20502 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: U20502
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel U20502 GBT China China structural steel and alloy steel
U20150
U20082
U20102
U20152
U20202
U20252
U20302
U20352
U20402
U20452

Chemical composition(mass fraction)(wt.%) of the U20502

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Cu(%)
0.47-0.55 0.17-0.37 0.50-0.80 0.035 0.035 0.25 0.3 0.25

Mechanical Properties of steel grade U20502

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)
189 (≥) 382 (≥) 42 13 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 332

Physical Properties of steel grade U20502

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 - -     0.41 -  
624 952 - 24.3 144   -  
799 - 41 42.2   233 442

Heat Treatment of steel grade U20502

Heat treated : 1594°C - 1828°C

Technological Curves of steel grade U20502

Cross Reference Table (Equivalent Grade) of U20502

Grade Standard Country Application
U20502 GBT China China structural steel and alloy steel

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