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Q345GNH

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Q295GNHL Q345GNHL
#Q345GNH

Description

China GBT Q345GNH China structural steel and alloy steel and Q345GNH Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

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

Chemical composition(mass fraction)(wt.%) of the Q345GNH

C(％) Si(％) Mn(％) S(％) Cu(%) Ti(%) Other(%)
Max 0.12 0.20-0.60 0.50-0.90 0.035 0.25-0.50 Max 0.03 RE Max 0.15

Mechanical Properties of steel grade Q345GNH

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)
994 (≥) 788 (≥) 14 11 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 131

Physical Properties of steel grade Q345GNH

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 - -     0.32 -  
969 993 - 13.3 421   -  
141 - 12 43.2   321 223

Heat Treatment of steel grade Q345GNH

Heat treated : 1927°C - 1318°C

Technological Curves of steel grade Q345GNH

Cross Reference Table (Equivalent Grade) of Q345GNH

Grade Standard Country Application
Q345GNH GBT China China structural steel and alloy steel
Q345GNHL GBT China China structural steel and alloy steel
Q295GNHL Q345GNHL
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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