Q345q C chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of Q345q C

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Q345q C

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This page is mainly introduced the Q345q C chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of Q345q C,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.

Mechanics performance 




Steel thickness/mm: more than 16
The yield point | σ s frequency/MPa: 345
Tensile depth | σ b frequency/MPa: 510
Elongation | δ 5 frequency / (%) : 21
Impact absorption power AKV/J | testing temperature / ℃ : 0
Impact absorption power AKV/J | longitudinal frequency/J | : 34
Impact absorption power AKV/J | time frequency/J | : 34
180 ° of cold bending test | d-apex diameter, a-the following steel thickness thickness when/mm | than 16: d = 2 a
180 ° of cold bending test | d-apex diameter, a-the following steel thickness thickness when/mm | > 16: d = 3 a
  • Steel Garde:Q345q C
  • Type:Special Alloy
  • Country:China
  • Application:Bridge structure with steel

Cross Reference Table(Equivalent Materials):

Material Standard Country
Q345q E China
Q345q GBT China
Q345q GBT China
Q345q GBT China

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 715~264 σb/MPa
Yield Strength 874 σ 0.2 ≥/MPa
Elongation 05 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 238~006 -
HRC 30 -

Physical Properties

Thermal expansion 20-29 e-6/K
Thermal conductivity 71-04 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 9092-8373 째C
Density 3250-5954 kg/m3
Resistivity 0.50-0.60 Ohm.mm2/m
     

Heat Treatment Regime

Annealing

Quenching

Tempering

Normalizing

Q & T

Size Availability

Steel Grade Specification Processing range(mm)
Q345q C Special Alloy Round Bar and Hollow Bar Φ1 to Φ2000
Square and Flat Steel Φ10 to Φ100
Plate and Sheet 0.08-800(Thickness)*10-1500(Width)*Length
Tube or Pipe OD:Φ4-410; WT:1-35 mm; Lenght:10-12000
Coil and Strip Steel THK:0.1mm Width:1500mm
Forged Ring/Cylindrical/Disk

Technical specification/standard for download