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Q275 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of Q275

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GBT Q275

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This page is mainly introduced the Q275 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of Q275,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Q275

Steel Garde:Q275
Type:Special Alloy
Country:China
Standard:GBT
Application:China structural steel and alloy steel

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
Q275		China

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	662～814	σb/MPa
Yield Strength	827	σ 0.2 ≥/MPa
Elongation	02	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	733～191	-
HRC	30	-

Physical Properties

Thermal expansion	54-61	e-6/K
Thermal conductivity	69-90	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	3612-9890	째C
Density	9089-4867	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)
Q275 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