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Description

China GBT U21502 China structural steel and alloy steel and U21502 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: U21502
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel U21502 GBT China China structural steel and alloy steel
U20752
U20802
U20852
U21152
U21202
U21252
U21302
U21352
U21402
U21452

Chemical composition(mass fraction)(wt.%) of the U21502

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Cu(%)
0.48-0.56 0.17-0.37 0.70-1.00 0.035 0.035 0.25 0.3 0.25

Mechanical Properties of steel grade U21502

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)
191 (≥) 839 (≥) 12 11 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 321

Physical Properties of steel grade U21502

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
24 - -     0.41 -  
325 378 - 11.3 134   -  
156 - 42 33.2   343 221

Heat Treatment of steel grade U21502

Heat treated : 1266°C - 1486°C

Technological Curves of steel grade U21502

Cross Reference Table (Equivalent Grade) of U21502

Grade Standard Country Application
U21502 GBT China China structural steel and alloy steel

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