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T20821 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of T20821

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UNS T20821

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This page is mainly introduced the T20821 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of T20821,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
T20821

Steel Garde:T20821
Type:Special Alloy
Country:USA
Standard:UNS
Application:Alloy tool steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	691～695	σb/MPa
Yield Strength	193	σ 0.2 ≥/MPa
Elongation	03	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	904～656	-
HRC	30	-

Physical Properties

Thermal expansion	14-04	e-6/K
Thermal conductivity	60-90	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	9487-0690	째C
Density	8184-2015	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)
T20821 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