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T20842 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of T20842

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UNS T20842

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This page is mainly introduced the T20842 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of T20842,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Hot-Work Tool Steel

Steel Garde:T20842
Type:Tool Die Steels
Country:USA
Standard:UNS
Application:Hot-Work Tool Steel

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
T20842	UNS	USA

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.55	0.70
Si	0.20	0.45
Mn	0.15	0.40
P		0.030
S		0.030
Cr	3.75	4.50
Mo	4.50	5.50
V	1.75	2.20
W	5.50	6.75
Ni＋Cu		0.75

Mechanical Properties

Tensile strength	524～320	σb/MPa
Yield Strength	624	σ 0.2 ≥/MPa
Elongation	32	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	784～318	-
HRC	30	-

Physical Properties

Thermal expansion	63-25	e-6/K
Thermal conductivity	94-50	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	8406-0086	째C
Density	9102-1957	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)
T20842 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