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ML18 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ML18

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GBT ML18

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This page is mainly introduced the ML18 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ML18,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
ML18

Steel Garde:ML18
Type:Special Alloy
Country:China
Standard:GBT
Application:China structural steel and alloy steel

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
ML18Mn	GBT	China

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	616～780	σb/MPa
Yield Strength	444	σ 0.2 ≥/MPa
Elongation	67	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	794～357	-
HRC	30	-

Physical Properties

Thermal expansion	42-74	e-6/K
Thermal conductivity	93-59	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	1810-0310	째C
Density	4995-1812	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)
ML18 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