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Q345GNHL chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of Q345GNHL

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GBT Q345GNHL

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This page is mainly introduced the Q345GNHL chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of Q345GNHL,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Q345GNHL

Steel Garde:Q345GNHL
Type:Special Alloy
Country:China
Standard:GBT
Application:China structural steel and alloy steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	198～959	σb/MPa
Yield Strength	775	σ 0.2 ≥/MPa
Elongation	75	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	217～162	-
HRC	30	-

Physical Properties

Thermal expansion	57-84	e-6/K
Thermal conductivity	04-11	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	0422-7738	째C
Density	8785-6330	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)
Q345GNHL 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