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

This material data has been provided by WIAM.

"Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Properties

General

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

Mechanical

Property	Temperature	Value	Comment
Elastic modulus	20.0 °C	170 GPa Show Material materials with Elastic modulus of 170 GPa
Elongation	20.0 °C	3 - 35 % Show Material materials with Elongation of 3 - 35 %
Hardness, Brinell	20.0 °C	120 - 280 [-] Show Material materials with Hardness, Brinell of 120 - 280 [-]
Poisson's ratio	23.0 °C	0.28 [-] Show Material materials with Poisson's ratio of 0.28 [-]	Typical for Nickel Iron Alloy
Tensile strength	20.0 °C	510 - 950 MPa Show Material materials with Tensile strength of 510 - 950 MPa
Yield strength Rp0.2	20.0 °C	200 - 930 MPa Show Material materials with Yield strength Rp0.2 of 200 - 930 MPa

Thermal

Property	Temperature	Value	Comment
Coefficient of thermal expansion	100.0 °C	9.1E-6 1/K Show Material materials with Coefficient of thermal expansion of 9.1E-6 1/K
	200.0 °C	9.1E-6 1/K Show Material materials with Coefficient of thermal expansion of 9.1E-6 1/K
	300.0 °C	9.1E-6 1/K Show Material materials with Coefficient of thermal expansion of 9.1E-6 1/K
	350.0 °C	9.5E-6 1/K Show Material materials with Coefficient of thermal expansion of 9.5E-6 1/K
	400.0 °C	1.03E-5 1/K Show Material materials with Coefficient of thermal expansion of 1.03E-5 1/K
	450.0 °C	1.1E-5 1/K Show Material materials with Coefficient of thermal expansion of 1.1E-5 1/K
	500.0 °C	1.15E-5 1/K Show Material materials with Coefficient of thermal expansion of 1.15E-5 1/K
	600.0 °C	1.22E-5 1/K Show Material materials with Coefficient of thermal expansion of 1.22E-5 1/K

Melting point		1450 °C Show Material materials with Melting point of 1450 °C	Typical for Nickel Iron Alloy
Specific heat capacity	20.0 °C	500 J/(kg·K) Show Material materials with Specific heat capacity of 500 J/(kg·K)
Thermal conductivity	20.0 °C	14 W/(m·K) Show Material materials with Thermal conductivity of 14 W/(m·K)

Electrical

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

Chemical properties

Property	Value
Carbon	0.02 % Show Material materials with Carbon of 0.02 %
Chromium	5.5 - 6.5 % Show Material materials with Chromium of 5.5 - 6.5 %
Iron	44.5 - 47 % Show Material materials with Iron of 44.5 - 47 %
Manganese	1 % Show Material materials with Manganese of 1 %
Nickel	45.18 % Show Material materials with Nickel of 45.18 %
Silicon	0.3 % Show Material materials with Silicon of 0.3 %