Q550 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of Q550

Location » Home » Grades > Special Alloy > Q550

GBT Q550

Profile

This page is mainly introduced the Q550 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of Q550,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Q550
  • Steel Garde:Q550
  • Type:Special Alloy
  • Country:China
  • Standard:GBT
  • Application:China structural steel and alloy steel

Cross Reference Table(Equivalent Materials):

Material Standard Country
Q550 GBT China

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 401~765 σb/MPa
Yield Strength 962 σ 0.2 ≥/MPa
Elongation 40 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 820~438 -
HRC 30 -

Physical Properties

Thermal expansion 79-52 e-6/K
Thermal conductivity 01-62 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 5996-0249 째C
Density 4157-3812 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)
Q550 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:Q550
Previous: Q550
Next: Q620