Sandvik Cuprothal Thermocouple

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Sandvik Cuprothal Thermocouple
Categories:	Metal; Nonferrous Metal; Copper Alloy
Material Notes:	CUPROTHAL is the negative leg of the following types of thermocouples and compensating cables: E, J, L, T and KCB (VX). The alloy can be used at temperatures down to 20 K where its Seebeck coefficient is about 8 mV / °C. Thermocouple type E has the highest emf output of any common thermocouple and is for this reason used in thermal generators (thermopiles). CUPROTHAL type T is matched with electrolytic copper (ASTM standard B3). Thermocouple type T is both used in laboratory and industrial applications. CUPROTHAL type KNCB (VNX) is matched with electrolytic copper when used in compensating cables for thermocouples type K. Information provided by Sandvik
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Physical Properties	Metric	English	Comments

Density	8.90 g/cc	0.322 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Vickers	130 @Thickness 2.00 mm	130 @Thickness 0.0787 in
Tensile Strength, Ultimate	480 MPa @Thickness 2.00 mm	69600 psi @Thickness 0.0787 in
Tensile Strength, Yield	250 MPa @Strain 0.2 %, Thickness 2.00 mm	36300 psi @Strain 0.2 %, Thickness 0.0787 in
Elongation at Break	30 % @Thickness 2.00 mm	30 % @Thickness 0.0787 in

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000490 ohm-cm	0.0000490 ohm-cm
	0.0000490 ohm-cm @Temperature 100 °C	0.0000490 ohm-cm @Temperature 212 °F
	0.0000490 ohm-cm @Temperature 200 °C	0.0000490 ohm-cm @Temperature 392 °F
	0.0000490 ohm-cm @Temperature 300 °C	0.0000490 ohm-cm @Temperature 572 °F
	0.0000492 ohm-cm @Temperature 400 °C	0.0000492 ohm-cm @Temperature 752 °F
	0.0000498 ohm-cm @Temperature 500 °C	0.0000498 ohm-cm @Temperature 932 °F
	0.0000670 ohm-cm @Temperature 600 °C	0.0000670 ohm-cm @Temperature 1110 °F

Thermal Properties	Metric	English	Comments
CTE, linear	14.0 µm/m-°C @Temperature 20.0 - 100 °C	7.78 µin/in-°F @Temperature 68.0 - 212 °F
Specific Heat Capacity	0.410 J/g-°C @Temperature 20.0 °C	0.0980 BTU/lb-°F @Temperature 68.0 °F
Thermal Conductivity	21.0 W/m-K @Temperature 20.0 °C	146 BTU-in/hr-ft²-°F @Temperature 68.0 °F
Melting Point	1280 °C	2340 °F
Maximum Service Temperature, Air	720 °C @Thickness 1.00 mm	1330 °F @Thickness 0.0394 in	bare, type JN
	760 °C @Thickness 1.00 mm	1400 °F @Thickness 0.0394 in	protected, type JN

Component Elements Properties	Metric	English	Comments
Cobalt, Co	0.30 %	0.30 %
Copper, Cu	54.7 %	54.7 %
Iron, Fe	0.50 %	0.50 %
Manganese, Mn	0.50 %	0.50 %
Nickel, Ni	44 %	44 %

Descriptive Properties
emf, mV, Reference junction 0°C	21.848; 400°C, JN
	28.946; 400°C, EN
	5.269; 100°C, JN
	6.319; 100°C, EN

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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NSANDV107 / 19001

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