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20MnG chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 20MnG

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GBT 20MnG

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This page is mainly introduced the 20MnG chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 20MnG,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
20MnG

Steel Garde:20MnG
Type:Special Alloy
Country:China
Standard:GBT
Application:China structural steel and alloy steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	707～764	σb/MPa
Yield Strength	835	σ 0.2 ≥/MPa
Elongation	36	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	808～507	-
HRC	30	-

Physical Properties

Thermal expansion	75-58	e-6/K
Thermal conductivity	10-16	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	4641-6949	째C
Density	3461-1364	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)
20MnG 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