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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	159～330	σb/MPa
Yield Strength	223	σ 0.2 ≥/MPa
Elongation	69	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	155～344	-
HRC	30	-

Physical Properties

Thermal expansion	80-95	e-6/K
Thermal conductivity	27-44	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	3303-4892	째C
Density	0820-0762	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