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A20204

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U41228 U40252
#A20204

Description

China GBT A20204 China structural steel and alloy steel and A20204 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: A20204
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel A20204 GBT China China structural steel and alloy steel
ML20MnVB
U40048
U40088
U40108
U40158
U40152
U40208
U40202
U41188
U41228

Chemical composition(mass fraction)(wt.%) of the A20204

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) B(%) Al(%)
0.17-0.23 Max 0.30 0.60-0.90 0.035 0.035 0.90-1.20 — 0.02

Mechanical Properties of steel grade A20204

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)
794 (≥) 341 (≥) 14 32 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 131

Physical Properties of steel grade A20204

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
34 - -     0.33 -  
722 291 - 41.3 143   -  
867 - 31 33.2   134 332

Heat Treatment of steel grade A20204

Heat treated : 1982°C - 1864°C

Technological Curves of steel grade A20204

Cross Reference Table (Equivalent Grade) of A20204

Grade Standard Country Application
A20204 GBT China China structural steel and alloy steel
U41228 U40252
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Jiangyou Longhai Special Steel Co.,Ltd.

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