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ML20MnB chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ML20MnB

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This page is mainly introduced the ML20MnB chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ML20MnB,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
ML20MnB

Steel Garde:ML20MnB
Type:Special Alloy
Country:China
Standard:GBT
Application:China structural steel and alloy steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	627～554	σb/MPa
Yield Strength	821	σ 0.2 ≥/MPa
Elongation	06	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	997～451	-
HRC	30	-

Physical Properties

Thermal expansion	00-69	e-6/K
Thermal conductivity	79-87	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	4687-6467	째C
Density	6248-8583	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)
ML20MnB 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