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Q420

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Q420 Q460
#Q420

Description

China GBT Q420 China structural steel and alloy steel and Q420 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: Q420
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel Q420 GBT China China structural steel and alloy steel
Q420
Q420
Q420
Q420
Q420
Q460
Q460
Q460
Q420
Q420

Chemical composition(mass fraction)(wt.%) of the Q420

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％)
Max 0.18 Max 0.55 1.00-1.60 0.025 0.025 Max 0.30 Max 0.70 Max 0.20

Mechanical Properties of steel grade Q420

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)
741 (≥) 531 (≥) 42 33 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 134

Physical Properties of steel grade Q420

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
23 - -     0.43 -  
658 591 - 34.3 234   -  
193 - 12 33.2   423 244

Heat Treatment of steel grade Q420

Heat treated : 1879°C - 1677°C

Technological Curves of steel grade Q420

Cross Reference Table (Equivalent Grade) of Q420

Grade Standard Country Application
Q420q GBT China China structural steel and alloy steel
Q420q GBT China China structural steel and alloy steel
Q420q GBT China China structural steel and alloy steel
Q420 GBT China China structural steel and alloy steel
Q420 GBT China China structural steel and alloy steel
Q420 GBT China China structural steel and alloy steel
Q420 GBT China China structural steel and alloy steel
Q420 GBT China China structural steel and alloy steel
Q420 GBT China China structural steel and alloy steel
Q420 GBT China China structural steel and alloy steel
Q420 GBT China China structural steel and alloy steel
Q420 Q460
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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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