Sandvik Cuprothal 49 and 49TC Resistance Wire

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Sandvik Cuprothal 49 and 49TC Resistance Wire
Categories:	Metal; Nonferrous Metal; Copper Alloy
Material Notes:	Cuprothal 49 is a Copper Nickel alloy, manufactured under close control from electrolytic Copper and pure Nickel. Its high electrical resistance, good ductility and non-corroding properties are very attractive for a variety of applications.In finer sizes its negligible temperature coefficient of resistance combined with its high resistivity makes it useful for the winding of precision resistors which must not change in resistance over a limited range in temperature. In this case the alloy is identified as Cuprothal 49 TC. Other applications are: temperature stable potentiometers, industrial rheostats and electric motor starter resistances. 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 1.00 mm	130 @Thickness 0.0394 in
Tensile Strength, Ultimate	480 MPa @Thickness 1.00 mm	69600 psi @Thickness 0.0394 in
Tensile Strength, Yield	250 MPa @Strain 0.2 %, Thickness 1.00 mm	36300 psi @Strain 0.2 %, Thickness 0.0394 in
Elongation at Break	30 % @Thickness 1.00 mm	30 % @Thickness 0.0394 in

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000490 ohm-cm	0.0000490 ohm-cm
	0.0000490 ohm-cm @Temperature 300 °C	0.0000490 ohm-cm @Temperature 572 °F
	0.0000491 ohm-cm @Temperature 100 °C	0.0000491 ohm-cm @Temperature 212 °F
	0.0000491 ohm-cm @Temperature 200 °C	0.0000491 ohm-cm @Temperature 392 °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
	0.0000510 ohm-cm @Temperature 600 °C	0.0000510 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	600 °C	1110 °F

Component Elements Properties	Metric	English	Comments
Copper, Cu	54.5 %	54.5 %
Iron, Fe	0.50 %	0.50 %
Manganese, Mn	1.0 %	1.0 %
Nickel, Ni	44 %	44 %

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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