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GBT Q345

Q345


Q345 material is China structural steel and alloy steel.

Chemical composition of Q345, Q345 mechanical properties, Q345 datasheet, Q345 equivalent grade, Heat treatment and temperature process of Q345.


Q345 property sheet

Q345 Spec.

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Chemical Composition of Q345

C 0.18
Si 1.00-1.60
Mn 0.55
P 0.03
S 0.03
V 0.02-0.15
Nb 0.015-0.060
Al 0.015
Ti 0.02-0.20

Mechanical Properties of Q345

Rp0.2 (MPa) 416 (≥)
Rm (MPa) 281 (≥)
AKV (J) 34
A (%) 32
Z (%) 41
Hardness HBW 334

Q345 shape and dimensions

Q345 Round bar: 1mm-800mm
Q345 Square bar: 10mm * 10mm-600mm *600mm
Q345 Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
Q345 Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
Q345 Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
Q345 Forgings: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes

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