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2.4955 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 2.4955

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AFNOR 2.4955

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This page is mainly introduced the 2.4955 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 2.4955,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Valve steels and alloys for internal combustion engines

Steel Garde:2.4955
Type:Stainless Steels
Country:France
Standard:AFNOR
Standard Number:

ITEM Standard Number Descriptions

1 NF EN 10090 Valve steels and alloys for internal combustion engines
Application:Valve steels and alloys for internal combustion engines

ITEM	Standard Number	Descriptions
1	NF EN 10090	Valve steels and alloys for internal combustion engines

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
NiFe25Cr20NbTi	AFNOR	France
NiFe25Cr20NbTi	ISO	International

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.04	0.10
Si		1.00
Mn		1.00
P		0.030
S		0.015
Cr	18.00	21.00
Ni		remaining
Mo
Al	0.30	1.00
Ti	1.00	2.00
Fe	23.00	28.00
B		0.008
Nb+Ta	1.00	2.00

Mechanical Properties

Tensile strength	204～734	σb/MPa
Yield Strength	124	σ 0.2 ≥/MPa
Elongation	62	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	607～554	-
HRC	30	-

Physical Properties

Thermal expansion	65-43	e-6/K
Thermal conductivity	45-13	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	7659-4296	째C
Density	4771-8458	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)
2.4955 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