DIN 17745 Grade NiFe47Cr

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Description

The expansion material NiFe47Cr with the material number 2.4486 is an alloy with controlled thermal expansion and possesses a relatively low thermal expansion up to approximately 450 °C. (Temperature interval RT to 400 °C: coefficient of thermal expansion 10.0 to 10.8 10^-6 K^-1). Its expansion properties largely correspond to those of soft glass of the lead lime or sodium lime type up to the annealing temperature. Application for sealings in soft glasses, especially lead glasses, particularly for anode cavity caps in cathode-ray television tubes. The alloy is of relatively good durability at normal temperatures in air with normal weather conditions as well as in fresh water and sea water. Application as welding filler material, too. The material is well weldable by using the tungsten inert-gas method.

Related Standards

DIN 17745

Equivalent Materials

Los datos sobre este material han sido proporcionados por WIAM.

A menos que se indique lo contrario, todas las medidas corresponden a condiciones de temperatura ambiente. A menos que se indique lo contrario, se utilizan las unidades del SI.
Las normas armonizadas son similares a uno o varios estándares del proveedor. Es posible que algunas normas armonizadas se ajusten al estándar original, mientras que otras pueden quedar fuera de su alcance.

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Propiedades

General

Property	Temperature	Value
Densidad	20.0 °C	8.2 g/cm³ Show Material materials with Densidad of 8.2 g/cm³

Mecánica

Property	Temperature	Value	Comment
Coeficiente de Poisson	23.0 °C	0.28 [-] Show Material materials with Coeficiente de Poisson of 0.28 [-]	Typical for Nickel Iron Alloy
Dureza Brinell	20.0 °C	120 - 280 [-] Show Material materials with Dureza Brinell of 120 - 280 [-]
Elongación	20.0 °C	3 - 35 % Show Material materials with Elongación of 3 - 35 %
Límite elástico Rp 0,2	20.0 °C	200 - 930 MPa Show Material materials with Límite elástico Rp 0,2 of 200 - 930 MPa
Módulo elástico	20.0 °C	170 GPa Show Material materials with Módulo elástico of 170 GPa
Resistencia a la tracción	20.0 °C	510 - 950 MPa Show Material materials with Resistencia a la tracción of 510 - 950 MPa

Aplicaciones térmicas

Property	Temperature	Value	Comment
Calor específico	20.0 °C	500 J/(kg·K) Show Material materials with Calor específico of 500 J/(kg·K)
Coeficiente de dilatación térmica	100.0 °C	9.1E-6 1/K Show Material materials with Coeficiente de dilatación térmica of 9.1E-6 1/K
	200.0 °C	9.1E-6 1/K Show Material materials with Coeficiente de dilatación térmica of 9.1E-6 1/K
	300.0 °C	9.1E-6 1/K Show Material materials with Coeficiente de dilatación térmica of 9.1E-6 1/K
	350.0 °C	9.5E-6 1/K Show Material materials with Coeficiente de dilatación térmica of 9.5E-6 1/K
	400.0 °C	1.03E-5 1/K Show Material materials with Coeficiente de dilatación térmica of 1.03E-5 1/K
	450.0 °C	1.1E-5 1/K Show Material materials with Coeficiente de dilatación térmica of 1.1E-5 1/K
	500.0 °C	1.15E-5 1/K Show Material materials with Coeficiente de dilatación térmica of 1.15E-5 1/K
	600.0 °C	1.22E-5 1/K Show Material materials with Coeficiente de dilatación térmica of 1.22E-5 1/K

Conductividad térmica	20.0 °C	14 W/(m·K) Show Material materials with Conductividad térmica of 14 W/(m·K)
Temperatura de fusión		1450 °C Show Material materials with Temperatura de fusión of 1450 °C	Typical for Nickel Iron Alloy

Eléctrico

Property	Temperature	Value
Resistividad eléctrica	20.0 °C	9.2E-7 Ω·m Show Material materials with Resistividad eléctrica of 9.2E-7 Ω·m

Chemical properties

Property	Value
Carbono	0.02 % Show Material materials with Carbono of 0.02 %
Cromo	5.5 - 6.5 % Show Material materials with Cromo of 5.5 - 6.5 %
Hierro	44.5 - 47 % Show Material materials with Hierro of 44.5 - 47 %
Manganeso	1 % Show Material materials with Manganeso of 1 %
Níquel	45.18 % Show Material materials with Níquel of 45.18 %
Silicona	0.3 % Show Material materials with Silicona of 0.3 %