Sandvik Nikrothal 20 Resistance Wire

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Sandvik Nikrothal 20 Resistance Wire
Categories:	Metal; Superalloy; Iron Base
Material Notes:	NIKROTHAL 20 is used at operating temperatures up to 1050°C (1920°F). Typical applications for NIKROTHAL 20 are as terminals attached to nickel-chromium heating elements operating at relatively low temperatures and in other applications where the material is exposed to elevated temperature. Information provided by Sandvik
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Physical Properties	Original Value	Comments

Density	7.80 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Vickers	160 @Thickness 1.00 mm
	160 @Thickness 4.00 mm
Tensile Strength, Ultimate	120 MPa @Temperature 900 °C	deformation rate= 6.2x10^-2/min
	650 MPa @Thickness 4.00 mm
	675 MPa @Thickness 1.00 mm
Tensile Strength, Yield	300 MPa @Strain 0.2 %, Thickness 4.00 mm
	335 MPa @Strain 0.2 %, Thickness 1.00 mm
Elongation at Break	30 % @Thickness 1.00 mm
	30 % @Thickness 4.00 mm
Creep Strength	4.00 MPa @Temperature 1000 °C, Time 3.60e+6 sec	1% elongation
	20.0 MPa @Temperature 800 °C, Time 3.60e+6 sec	1% elongation

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000950 ohm-cm
	0.0000990 ohm-cm @Temperature 100 °C
	0.000104 ohm-cm @Temperature 200 °C
	0.000108 ohm-cm @Temperature 300 °C
	0.000111 ohm-cm @Temperature 400 °C
	0.000115 ohm-cm @Temperature 500 °C
	0.000116 ohm-cm @Temperature 600 °C
	0.000119 ohm-cm @Temperature 700 °C
	0.000121 ohm-cm @Temperature 800 °C
	0.000123 ohm-cm @Temperature 900 °C
	0.000125 ohm-cm @Temperature 1000 °C
	0.000127 ohm-cm @Temperature 1100 °C

Thermal Properties	Original Value	Comments
CTE, linear	16.0 µm/m-°C @Temperature 20.0 - 250 °C
	17.0 µm/m-°C @Temperature 20.0 - 500 °C
	18.0 µm/m-°C @Temperature 20.0 - 750 °C
	19.0 µm/m-°C @Temperature 20.0 - 1000 °C
Specific Heat Capacity	0.500 J/g-°C @Temperature 20.0 °C
	0.500 J/g-°C @Temperature 100 °C
	0.500 J/g-°C @Temperature 200 °C
	0.520 J/g-°C @Temperature 300 °C
	0.550 J/g-°C @Temperature 400 °C
	0.570 J/g-°C @Temperature 500 °C
	0.600 J/g-°C @Temperature 600 °C
	0.630 J/g-°C @Temperature 700 °C
	0.640 J/g-°C @Temperature 800 °C
	0.680 J/g-°C @Temperature 900 °C
	0.700 J/g-°C @Temperature 1000 °C
Thermal Conductivity	13.0 W/m-K @Temperature 20.0 °C
	14.0 W/m-K @Temperature 100 °C
	16.0 W/m-K @Temperature 200 °C
	17.0 W/m-K @Temperature 300 °C
	18.0 W/m-K @Temperature 400 °C
	20.0 W/m-K @Temperature 500 °C
	21.0 W/m-K @Temperature 600 °C
	22.0 W/m-K @Temperature 700 °C
	23.0 W/m-K @Temperature 800 °C
	25.0 W/m-K @Temperature 1000 °C
	25.0 W/m-K @Temperature 900 °C
Melting Point	1380 °C
Maximum Service Temperature, Air	1050 °C

Optical Properties	Original Value	Comments
Emissivity (0-1)	0.88	fully oxidized

Component Elements Properties	Original Value	Comments
Carbon, C	<= 0.080 %
Chromium, Cr	23 - 25 %
Iron, Fe	>= 50.92 %
Manganese, Mn	<= 0.50 %
Nickel, Ni	19 - 21 %
Silicon, Si	2.3 - 2.5 %

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NSANDV081 / 18975

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