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Q345GJZ-D

Description

China GBT Q345GJZ-D China structural steel and alloy steel and Q345GJZ-D Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: Q345GJZ-D
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel Q345GJZ-D GBT China China structural steel and alloy steel
Q235GJ-C
Q235GJ-D
Q235GJ-E
Q345GJ-C
Q345GJ-D
Q345GJ-E
Q235GJZ-C
Q235GJZ-D
Q235GJZ-E
Q345GJZ-C

Chemical composition(mass fraction)(wt.%) of the Q345GJZ-D

C(%) Si(%) Mn(%) P(%) S(%) V(%) Nb(%) Al(%) Ti(%)
Max 0.18 Max 0.55 Max 0.60 0.02 0.015 0.02-0.15 0.015-0.060 0.015 0.01-0.10

Mechanical Properties of steel grade Q345GJZ-D

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)
831 (≥) 893 (≥) 13 12 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 431

Physical Properties of steel grade Q345GJZ-D

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
41 - -     0.34 -  
515 726 - 31.3 443   -  
631 - 14 12.2   434 133

Heat Treatment of steel grade Q345GJZ-D

Heat treated : 1857°C - 1951°C

Technological Curves of steel grade Q345GJZ-D

Cross Reference Table (Equivalent Grade) of Q345GJZ-D

Grade Standard Country Application
Q345GJZ-D GBT China China structural steel and alloy steel

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