Sandvik Alkrothal 14 Resistance Strip

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Sandvik Alkrothal 14 Resistance Strip
Categories:	Metal; Ferrous Metal; Ferritic; Superalloy; Iron Base
Material Notes:	ALKROTHAL 14 is a ferritic FeCrAl alloy which is recommended for use at temperatures up to 1100°C (2010°F). Typical applications for ALKROTHAL 14 are in rheostats, braking resistors, etc. It is also used as electrical heating elements in industrial applications. Information provided by Sandvik
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Physical Properties	Original Value	Comments

Density	7.28 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Vickers	200
Tensile Strength, Ultimate	550 MPa
	30.0 MPa @Temperature 900 °C	deformation rate= 6.2x10^-2/min
Tensile Strength, Yield	420 MPa @Strain 0.2 %
Elongation at Break	20 %
Creep Strength	1.00 MPa @Temperature 1000 °C, Time 3.60e+6 sec	1% elongation
	4.00 MPa @Temperature 800 °C, Time 3.60e+6 sec	1% elongation
Modulus of Elasticity	220 GPa
	130 GPa @Temperature 1000 °C
	150 GPa @Temperature 800 °C
	170 GPa @Temperature 600 °C
	190 GPa @Temperature 400 °C
	205 GPa @Temperature 200 °C
	210 GPa @Temperature 100 °C
Poissons Ratio	0.30
Shear Modulus	85.0 GPa	calculated

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.000125 ohm-cm
	0.000125 ohm-cm @Temperature 100 °C
	0.000125 ohm-cm @Temperature 600 °C
	0.000127 ohm-cm @Temperature 200 °C
	0.000128 ohm-cm @Temperature 300 °C
	0.000130 ohm-cm @Temperature 400 °C
	0.000131 ohm-cm @Temperature 500 °C
	0.000136 ohm-cm @Temperature 700 °C
	0.000137 ohm-cm @Temperature 800 °C
	0.000138 ohm-cm @Temperature 900 °C
	0.000138 ohm-cm @Temperature 1000 °C
	0.000140 ohm-cm @Temperature 1100 °C
Curie Temperature	600 °C

Thermal Properties	Original Value	Comments
CTE, linear	11.0 µm/m-°C @Temperature 20.0 - 250 °C
	12.0 µm/m-°C @Temperature 20.0 - 500 °C
	14.0 µm/m-°C @Temperature 20.0 - 750 °C
	15.0 µm/m-°C @Temperature 20.0 - 1000 °C
Specific Heat Capacity	0.460 J/g-°C @Temperature 20.0 °C
	0.630 J/g-°C @Temperature 200 °C
	0.720 J/g-°C @Temperature 400 °C
	0.730 J/g-°C @Temperature 1000 °C
	0.800 J/g-°C @Temperature 800 °C
	1.00 J/g-°C @Temperature 600 °C
Thermal Conductivity	16.0 W/m-K @Temperature 20.0 °C
Melting Point	1500 °C
Maximum Service Temperature, Air	1000 °C

Optical Properties	Original Value	Comments
Emissivity (0-1)	0.70	fully oxidized

Component Elements Properties	Original Value	Comments
Aluminum, Al	4.3 %
Carbon, C	<= 0.080 %
Chromium, Cr	14 - 16 %
Iron, Fe	>= 78.42 %
Manganese, Mn	<= 0.50 %
Silicon, Si	<= 0.70 %

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NSANDV061 / 18955

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