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ML20 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ML20

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GBT ML20

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This page is mainly introduced the ML20 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ML20,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
ML20

Steel Garde:ML20
Type:Special Alloy
Country:China
Standard:GBT
Application:China structural steel and alloy steel

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
ML20Al	GBT	China
ML20	GBT	China
ML20Cr	GBT	China
ML20B	GBT	China
ML20MnB	GBT	China
ML20MnTiB	GBT	China
ML20MnVB	GBT	China
ML20MnA	GBT	China
ML20CrMoA	GBT	China

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	051～646	σb/MPa
Yield Strength	638	σ 0.2 ≥/MPa
Elongation	21	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	814～829	-
HRC	30	-

Physical Properties

Thermal expansion	74-20	e-6/K
Thermal conductivity	79-83	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	6987-0728	째C
Density	0066-2509	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)
ML20 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