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Stellite 21 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of Stellite 21

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This page is mainly introduced the Stellite 21 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of Stellite 21,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Stellite alloy

Steel Garde:Stellite 21
Type:Tool Die Steels
Application:Stellite alloy

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.20	0.30
Si		1.00
Mn		1.00
Cr	25.00	29.00
Ni	1.75	3.75
Mo	5.00	6.00
Co	remaining
W
Fe		3.00
B		0.007

Mechanical Properties

Tensile strength	237～735	σb/MPa
Yield Strength	169	σ 0.2 ≥/MPa
Elongation	02	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	052～663	-
HRC	30	-

Physical Properties

Thermal expansion	69-72	e-6/K
Thermal conductivity	07-88	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	1361-1378	째C
Density	7878-8204	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)
Stellite 21 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