Q390 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of Q390

Location » Home » Grades > Special Alloy > Q390

GBT Q390

Profile

This page is mainly introduced the Q390 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of Q390,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Q390
  • Steel Garde:Q390
  • Type:Special Alloy
  • Country:China
  • Standard:GBT
  • Application:China structural steel and alloy steel

Cross Reference Table(Equivalent Materials):

Material Standard Country
Q390 GBT China
Q390 GBT China
Q390 GBT China
Q390 GBT China
Q390GNH GBT China

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 792~213 σb/MPa
Yield Strength 967 σ 0.2 ≥/MPa
Elongation 28 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 713~553 -
HRC 30 -

Physical Properties

Thermal expansion 87-80 e-6/K
Thermal conductivity 43-10 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 9486-2396 째C
Density 6079-7865 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)
Q390 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

Hot keywords:Q390
Previous: Q390
Next: Q390