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Q345GNHL

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Q345GNH Q390GNH
#Q345GNHL

Description

China GBT Q345GNHL China structural steel and alloy steel and Q345GNHL Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: Q345GNHL
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel Q345GNHL GBT China China structural steel and alloy steel
Q620
Q690
Q690
Q235NH
Q295NH
Q355NH
Q460NH
Q295GNH
Q295GNHL
Q345GNH

Chemical composition(mass fraction)(wt.%) of the Q345GNHL

C(％) Si(％) Mn(％) S(％) Cr(％) Ni(％) Cu(%)
Max 0.12 0.25-0.75 0.20-0.50 0.035 0.30-1.25 Max 0.65 0.25-0.55

Mechanical Properties of steel grade Q345GNHL

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)
451 (≥) 497 (≥) 24 34 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 444

Physical Properties of steel grade Q345GNHL

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
11 - -     0.43 -  
997 269 - 14.3 133   -  
916 - 11 43.2   331 143

Heat Treatment of steel grade Q345GNHL

Heat treated : 1287°C - 1911°C

Technological Curves of steel grade Q345GNHL

Cross Reference Table (Equivalent Grade) of Q345GNHL

Grade Standard Country Application
Q345GNHL GBT China China structural steel and alloy steel
Q345GNH Q390GNH
Available Suppliers
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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