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NiFe25Cr20NbTi chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of NiFe25Cr20NbTi

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ISO NiFe25Cr20NbTi

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This page is mainly introduced the NiFe25Cr20NbTi chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of NiFe25Cr20NbTi,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Heat-treatable steels, alloy steels and free-cutting steels -- Part 15: Valve steels for internal combustion engines

Steel Garde:NiFe25Cr20NbTi
Type:Stainless Steels
Country:International
Standard:ISO

Standard Number:

ITEM	Standard Number	Descriptions
1	ISO 683-15 (1992)	Heat-treatable steels, alloy steels and free-cutting steels -- Part 15: Valve steels for internal combustion engines

Application:Heat-treatable steels, alloy steels and free-cutting steels -- Part 15: Valve steels for internal combustion engines

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
NiFe25Cr20NbTi	AFNOR	France
2.4955	AFNOR	France

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.10
Si		1.00
Mn		1.00
P		0.030
S		0.015
Cr	18.00	21.00
Mo
Ni	remaining
Al	0.30	1.00
Fe	23.00	28.00
Nb+Ta	1.00	2.00
B		0.008

Mechanical Properties

Tensile strength	837～717	σb/MPa
Yield Strength	171	σ 0.2 ≥/MPa
Elongation	90	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	137～734	-
HRC	30	-

Physical Properties

Thermal expansion	29-83	e-6/K
Thermal conductivity	84-92	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	6856-7221	째C
Density	0932-2900	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)
NiFe25Cr20NbTi Stainless 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