2.4955 (NiFe25Cr20NbTi)

Classification

Country	Section	Category
Country	Section	Category
Germany	Alloy DIN 17007−4	Ni Alloys with Co, Cr and Mo Co Alloys with Cr, Ni and Mo

Chemical composition

Standard	Fe, %	Si, %	B, %	Mn, %	Cr, %	Ti, %	Ni, %	Al, %	P, %	C, %	S, %
Standard	Fe, %	Si, %	B, %	Mn, %	Cr, %	Ti, %	Ni, %	Al, %	P, %	C, %	S, %
EN 10090	23–28	< 1	< 0.008	< 1	18–21	1–2	45.847–57.66	0.3–1	< 0.03	0.04–0.1	< 0.015

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Physical characteristics

Temperature, °C	$\alpha\cdot 10^{6}$ , $K^{-1}$	$\varkappa$ , $\frac{W}{m\cdot K}$	$\rho$ , $\frac{kg}{m^3}$
Temperature, °C	$\alpha\cdot 10^{6}$ , $K^{-1}$	$\varkappa$ , $\frac{W}{m\cdot K}$	$\rho$ , $\frac{kg}{m^3}$
20		13	8100
100	14.1
300	15.5
500	15.9
700	16.8

Mechanical properties at 20 °C

Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{0.2}$ , $MPa$	$\epsilon_L$ , %	$\psi$ , %	Treatment
Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{0.2}$ , $MPa$	$\epsilon_L$ , %	$\psi$ , %	Treatment
				solution annealing	900–1100	500	25	30

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Rolling	Standard	Classifiers	Value, HRC
Rolling	Standard	Classifiers	Value, HRC
		solution annealing	28

Standards

Standard	Description
Standard	Description
EN 10090

Description of chemical elements

Element	Units of measurement	Description
Element	Units of measurement	Description
Fe	%	Iron
Si	%	Silicon
B	%	Bor
Mn	%	Manganese
Cr	%	Chrome
Ti	%	Titan
Ni	%	Nickel
Al	%	Aluminium
P	%	Phosphorus
C	%	Carbon
S	%	Sulfur

Description of physical characteristics

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
$\alpha\cdot 10^{6}$	$K^{-1}$	Coefficient of thermal (linear) expansion (range 20°C–T)
$\varkappa$	$\frac{W}{m\cdot K}$	Coefficient of thermal conductivity (the heat capacity of the material)
$\rho$	$\frac{kg}{m^3}$	The density of the material

Description of mechanical properties

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
$\sigma_{0.2}$	$MPa$	Tensile stress required to produce a total elongation of 0.2%
$\sigma _{U}$	$MPa$	Ultimate tensile strength
$\epsilon_L$	%	Elongation at break (longitudinal)
$\psi$	%	Reduction in cross section on fracture