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Q345GJ-C

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Q235GJ-E Q345GJ-D
#Q345GJ-C

Description

China GBT Q345GJ-C China structural steel and alloy steel and Q345GJ-C Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: Q345GJ-C
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel Q345GJ-C GBT China China structural steel and alloy steel
L53550
L54600
L52951
L52952
L53451
L53452
L53901
Q235GJ-C
Q235GJ-D
Q235GJ-E

Chemical composition(mass fraction)(wt.%) of the Q345GJ-C

C(％) Si(％) Mn(％) P(％) S(％) V(%) Nb(%) Al(%) Ti(%)
Max 0.20 Max 0.55 Max 0.60 0.025 0.015 0.02-0.15 0.015-0.060 0.015 0.01-0.10

Mechanical Properties of steel grade Q345GJ-C

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)
457 (≥) 785 (≥) 14 42 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 421

Physical Properties of steel grade Q345GJ-C

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
44 - -     0.34 -  
243 915 - 13.3 341   -  
779 - 31 32.2   432 434

Heat Treatment of steel grade Q345GJ-C

Heat treated : 1355°C - 1454°C

Technological Curves of steel grade Q345GJ-C

Cross Reference Table (Equivalent Grade) of Q345GJ-C

Grade Standard Country Application
Q345GJ-C GBT China China structural steel and alloy steel
Q235GJ-E Q345GJ-D
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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