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Description

China GBT U20302 China structural steel and alloy steel and U20302 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: U20302
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel U20302 GBT China China structural steel and alloy steel
65Mn
70Mn
U20080
U20100
U20150
U20082
U20102
U20152
U20202
U20252

Chemical composition(mass fraction)(wt.%) of the U20302

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Cu(%)
0.27-0.34 0.17-0.37 0.50-0.80 0.035 0.035 0.25 0.3 0.25

Mechanical Properties of steel grade U20302

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)
593 (≥) 937 (≥) 12 12 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 241

Physical Properties of steel grade U20302

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
32 - -     0.41 -  
595 161 - 14.3 311   -  
545 - 32 11.2   344 124

Heat Treatment of steel grade U20302

Heat treated : 1757°C - 1984°C

Technological Curves of steel grade U20302

Cross Reference Table (Equivalent Grade) of U20302

Grade Standard Country Application
U20302 GBT China China structural steel and alloy steel

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