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T12004 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of T12004

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UNS T12004

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This page is mainly introduced the T12004 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of T12004,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:T12004
Type:Tool Die Steels
Country:USA
Standard:UNS
Application:High-Speed Tool Steel

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.70	0.80
Si	0.20	0.40
Mn	0.10	0.40
P		0.030
S		0.030
Cr	3.75	4.50
Mo	0.40	1.00
V	0.80	1.20
W	17.50	19.00
Co	4.25	5.75

Mechanical Properties

Tensile strength	567～797	σb/MPa
Yield Strength	170	σ 0.2 ≥/MPa
Elongation	60	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	928～438	-
HRC	30	-

Physical Properties

Thermal expansion	42-28	e-6/K
Thermal conductivity	30-76	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	1108-7602	째C
Density	7895-8049	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)
T12004 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