Sandvik Iron Thermocouple

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Sandvik Iron Thermocouple
Categories:	Metal; Ferrous Metal
Material Notes:	Iron is the positive leg of thermocouples type J, L, and it is also the positive leg of compensating cables type KCA (WX). Thermocouple type J and L are frequently used because of their high emf output and their low cost. Compensating cables of type KCA are used together with thermocouples of type K. IRON can not be exposed to sulphur containing atmospheres and to temperatures below zero. The alloy is transformed magnetically at 770°C, and a crystallographic transformation occurs at 900°C. Both transformations affect the thermoelectric properties of the alloy. The wire is supplied copper-coated in order to prevent oxidation. Information provided by Sandvik
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Physical Properties	Original Value	Comments

Density	7.86 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Vickers	100 @Thickness 2.00 mm
Tensile Strength, Ultimate	450 MPa @Thickness 2.00 mm
Elongation at Break	15 % @Thickness 2.00 mm

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000130 ohm-cm

Thermal Properties	Original Value	Comments
CTE, linear	11.7 µm/m-°C @Temperature 20.0 - 100 °C
Specific Heat Capacity	0.445 J/g-°C @Temperature 20.0 °C
Thermal Conductivity	66.2 W/m-K @Temperature 100 °C
Melting Point	1535 °C
Maximum Service Temperature, Air	560 °C @Thickness 0.250 mm	bare
	650 °C @Thickness 0.500 mm	bare
	670 °C @Thickness 0.250 mm	protected
	720 °C @Thickness 1.00 mm	bare
	760 °C @Thickness 1.00 mm	protected
	760 °C @Thickness 3.26 mm	bare
	760 °C @Thickness 3.26 mm	protected
	760 °C @Thickness 1.63 mm	bare
	760 °C @Thickness 1.63 mm	protected
	760 °C @Thickness 0.500 mm	protected

Component Elements Properties	Original Value	Comments
Carbon, C	0.030 %
Iron, Fe	99.62 %
Manganese, Mn	0.30 %
Silicon, Si	0.050 %

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NSANDV105 / 18999

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