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ТТ20К9 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ТТ20К9

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ГОСТ ТТ20К9

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This page is mainly introduced the ТТ20К9 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ТТ20К9,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.

Steel Garde:ТТ20К9
Type:Special Alloy
Country:Russia
Standard:ГОСТ
Application:Carbide for cutting tools

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
ТТ20К9	ГОСТ	Russia

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	225～958	σb/MPa
Yield Strength	845	σ 0.2 ≥/MPa
Elongation	58	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	424～918	-
HRC	30	-

Physical Properties

Thermal expansion	63-23	e-6/K
Thermal conductivity	11-28	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	6768-1820	째C
Density	5203-7198	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)
ТТ20К9 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