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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	409～164	σb/MPa
Yield Strength	581	σ 0.2 ≥/MPa
Elongation	42	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	019～181	-
HRC	30	-

Physical Properties

Thermal expansion	26-57	e-6/K
Thermal conductivity	65-55	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	8832-3936	째C
Density	7436-8613	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