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T12008 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of T12008

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UNS T12008

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This page is mainly introduced the T12008 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of T12008,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
High-Speed Tool Steel

Steel Garde:T12008
Type:Tool Die Steels
Country:USA
Standard:UNS
Application:High-Speed Tool Steel

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.75	0.85
Si	0.20	0.40
Mn	0.20	0.40
P		0.030
S		0.030
Cr	3.75	4.50
Mo	0.40	1.00
V	1.80	2.40
W	13.25	14.75
Co	4.25	5.75

Mechanical Properties

Tensile strength	741～765	σb/MPa
Yield Strength	501	σ 0.2 ≥/MPa
Elongation	20	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	219～170	-
HRC	30	-

Physical Properties

Thermal expansion	22-42	e-6/K
Thermal conductivity	62-48	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	1421-7248	째C
Density	5396-2024	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)
T12008 Tool Die Steels	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