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A70284

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A70204 A70354
#A70284

Description

China GBT A70284 China structural steel and alloy steel and A70284 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: A70284
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel A70284 GBT China China structural steel and alloy steel
L20158
U41252
U41302
U41352
A20374
A20404
A30304
A30354
A30424
A70204

Chemical composition(mass fraction)(wt.%) of the A70284

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) B(%) Al(%)
0.25-0.32 Max 0.40 0.60-0.90 0.035 0.035 — 0.0005-0.0035 0.02

Mechanical Properties of steel grade A70284

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)
577 (≥) 788 (≥) 21 31 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 344

Physical Properties of steel grade A70284

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
43 - -     0.43 -  
927 449 - 34.3 111   -  
145 - 33 21.2   413 311

Heat Treatment of steel grade A70284

Heat treated : 1125°C - 1734°C

Technological Curves of steel grade A70284

Cross Reference Table (Equivalent Grade) of A70284

Grade Standard Country Application
A70284 GBT China China structural steel and alloy steel
A70204 A70354
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Jiangyou Longhai Special Steel Co.,Ltd.
Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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