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Q390GNH chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of Q390GNH

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GBT Q390GNH

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This page is mainly introduced the Q390GNH chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of Q390GNH,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Q390GNH

Steel Garde:Q390GNH
Type:Special Alloy
Country:China
Standard:GBT
Application:China structural steel and alloy steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	798～450	σb/MPa
Yield Strength	632	σ 0.2 ≥/MPa
Elongation	50	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	811～190	-
HRC	30	-

Physical Properties

Thermal expansion	24-83	e-6/K
Thermal conductivity	72-55	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	0534-2897	째C
Density	6583-8928	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)
Q390GNH 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