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Q345q

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Q345q Q370q
#Q345q

Description

China GBT Q345q China structural steel and alloy steel and Q345q Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: Q345q
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel Q345q GBT China China structural steel and alloy steel
Q235
Q235
Q235
Q255
Q255
Q275
Q235q
Q235q
Q345q
Q345q

Chemical composition(mass fraction)(wt.%) of the Q345q

C(％) Si(％) Mn(％) P(％) S(％)
Max 0.17 Max 0.50 1.20-1.60 0.02 0.015

Mechanical Properties of steel grade Q345q

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)
219 (≥) 959 (≥) 34 34 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 243

Physical Properties of steel grade Q345q

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
31 - -     0.42 -  
932 868 - 14.3 244   -  
841 - 34 12.2   114 244

Heat Treatment of steel grade Q345q

Heat treated : 1526°C - 1275°C

Technological Curves of steel grade Q345q

Cross Reference Table (Equivalent Grade) of Q345q

Grade Standard Country Application
Q345q E China Bridge structure with steel
Q345q C China Bridge structure with steel
Q345q GBT China China structural steel and alloy steel
Q345q GBT China China structural steel and alloy steel
Q345q GBT China China structural steel and alloy steel
Q345q Q370q
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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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