DIN 17742 Grade NiCr8020 solution annealed (+AT)

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Description

The material NiCr8020 with the material number 2.4869 is applied in the form of strips, sheets, tubes and wires (see also heating conductor alloys according to DIN 17470 or electrical resistance alloys according to DIN 17471) for furnace construction components and heating conductors. It is a nickel-chromium heating conductor alloy for operating temperatures of up to 1150 °C and often contains additives of rare earths for a higher resistance to oxidation, especially with frequent switching operations or broad temperature variations. The resistance to atmospheric corrosion at 20 °C is high up to the upper operating temperature the resistance to air and other oxygen-containing gases as well as to nitrogen-containing low-oxygen gases is high as well, yet it is low to oxidizing as well as reducing gases containing sulphur. The resistance to carbonizing is high. Application for industrial electric furnaces, enamelling furnaces, household appliances, night-current storage space-heaters.

Related Standards

DIN 17742

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
Elastic modulus	20.0 °C	200 GPa Show Material materials with Elastic modulus of 200 GPa
Elongation	20.0 °C	25 % Show Material materials with Elongation of 25 %
Hardness, Brinell	20.0 °C	230 [-] Show Material materials with Hardness, Brinell of 230 [-]
Tensile strength	20.0 °C	600 MPa Show Material materials with Tensile strength of 600 MPa
Yield strength Rp0.2	20.0 °C	220 MPa Show Material materials with Yield strength Rp0.2 of 220 MPa
Yield strength Rp1.0	20.0 °C	250 MPa Show Material materials with Yield strength Rp1.0 of 250 MPa

Thermal

Property	Temperature	Value	Comment
Coefficient of thermal expansion	100.0 °C	1.35E-5 1/K Show Material materials with Coefficient of thermal expansion of 1.35E-5 1/K
	200.0 °C	1.4E-5 1/K Show Material materials with Coefficient of thermal expansion of 1.4E-5 1/K
	400.0 °C	1.5E-5 1/K Show Material materials with Coefficient of thermal expansion of 1.5E-5 1/K
	600.0 °C	1.55E-5 1/K Show Material materials with Coefficient of thermal expansion of 1.55E-5 1/K
	800.0 °C	1.6E-5 1/K Show Material materials with Coefficient of thermal expansion of 1.6E-5 1/K

Max service temperature, long		0 - 1150 °C Show Material materials with Max service temperature, long of 0 - 1150 °C
Melting point		1400 °C Show Material materials with Melting point of 1400 °C	Typical for Nickel Chromium Alloy
Specific heat capacity	20.0 °C	460 J/(kg·K) Show Material materials with Specific heat capacity of 460 J/(kg·K)
Thermal conductivity	20.0 °C	13 W/(m·K) Show Material materials with Thermal conductivity of 13 W/(m·K)

Electrical

Property	Temperature	Value
Electrical resistivity	20.0 °C	1.1E-6 Ω·m Show Material materials with Electrical resistivity of 1.1E-6 Ω·m
	100.0 °C	1.14E-6 Ω·m Show Material materials with Electrical resistivity of 1.14E-6 Ω·m
	200.0 °C	1.16E-6 Ω·m Show Material materials with Electrical resistivity of 1.16E-6 Ω·m
	300.0 °C	1.18E-6 Ω·m Show Material materials with Electrical resistivity of 1.18E-6 Ω·m
	400.0 °C	1.2E-6 Ω·m Show Material materials with Electrical resistivity of 1.2E-6 Ω·m
	500.0 °C	1.22E-6 Ω·m Show Material materials with Electrical resistivity of 1.22E-6 Ω·m
	600.0 °C	1.21E-6 Ω·m Show Material materials with Electrical resistivity of 1.21E-6 Ω·m
	700.0 °C	1.21E-6 Ω·m Show Material materials with Electrical resistivity of 1.21E-6 Ω·m
	800.0 °C	1.22E-6 Ω·m Show Material materials with Electrical resistivity of 1.22E-6 Ω·m
	900.0 °C	1.23E-6 Ω·m Show Material materials with Electrical resistivity of 1.23E-6 Ω·m
	1000.0 °C	1.24E-6 Ω·m Show Material materials with Electrical resistivity of 1.24E-6 Ω·m
	1100.0 °C	1.26E-6 Ω·m Show Material materials with Electrical resistivity of 1.26E-6 Ω·m
	1200.0 °C	1.28E-6 Ω·m Show Material materials with Electrical resistivity of 1.28E-6 Ω·m
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Chemical properties

Property	Value
Aluminium	0.3 % Show Material materials with Aluminium of 0.3 %
Carbon	0.15 % Show Material materials with Carbon of 0.15 %
Chromium	19 - 21 % Show Material materials with Chromium of 19 - 21 %
Copper	0.5 % Show Material materials with Copper of 0.5 %
Iron	1 % Show Material materials with Iron of 1 %
Manganese	1 % Show Material materials with Manganese of 1 %
Nickel	75 % Show Material materials with Nickel of 75 %
Phosphorus	0.02 % Show Material materials with Phosphorus of 0.02 %
Silicon	0.5 - 2 % Show Material materials with Silicon of 0.5 - 2 %
Sulfur	0.015 % Show Material materials with Sulfur of 0.015 %