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20Mn2 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 20Mn2

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GBT 20Mn2

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This page is mainly introduced the 20Mn2 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 20Mn2,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
20Mn2

Steel Garde:20Mn2
Type:Special Alloy
Country:China
Standard:GBT
Application:China structural steel and alloy steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	912～692	σb/MPa
Yield Strength	262	σ 0.2 ≥/MPa
Elongation	89	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	979～703	-
HRC	30	-

Physical Properties

Thermal expansion	96-58	e-6/K
Thermal conductivity	78-20	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	3111-2020	째C
Density	1884-6802	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)
20Mn2 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