Sandvik Kanthal A Resistance Wire

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Sandvik Kanthal A Resistance Wire
Categories:	Metal; Ferrous Metal; Ferritic; Superalloy; Iron Base
Material Notes:	KANTHAL A is a ferritic FeCrAl alloy which is recommended for use at wire temperatures up to 1350°C (2460°F). In addition to industrial furnaces, it is used in appliances where its high resistivity and good oxidation resistance are of particular importance. Typical applications for KANTHAL A are in elements embedded in ceramics for panel heaters, infrared heaters, warming plates, irons, ceramic pots, in cartridge heaters for liquid heating, storage heaters, in ceramic heaters for cooking plates, air guns, hobby kilns, radiators, in quartz tube heaters for space heating, toasters, toaster ovens, grills, industrial infrared dryers, coils on molded ceramic fibre for cooking plates with ceramic hobs. Information provided by Sandvik
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Physical Properties	Original Value	Comments

Density	7.15 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Vickers	230 @Thickness 1.00 mm
	230 @Thickness 4.00 mm
Tensile Strength, Ultimate	34.0 MPa @Temperature 900 °C	deformation rate= 6.2x10^-2/min
	660 MPa @Thickness 4.00 mm
	725 MPa @Thickness 1.00 mm
Tensile Strength, Yield	450 MPa @Strain 0.2 %, Thickness 4.00 mm
	550 MPa @Strain 0.2 %, Thickness 1.00 mm
Elongation at Break	22 % @Thickness 1.00 mm
	24 % @Thickness 4.00 mm
Creep Strength	0.500 MPa @Temperature 1000 °C, Time 3.60e+6 sec	1% elongation
	1.20 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	0.000139 ohm-cm
	0.000139 ohm-cm @Temperature 100 °C
	0.000140 ohm-cm @Temperature 200 °C
	0.000140 ohm-cm @Temperature 300 °C
	0.000142 ohm-cm @Temperature 400 °C
	0.000143 ohm-cm @Temperature 500 °C
	0.000144 ohm-cm @Temperature 600 °C
	0.000144 ohm-cm @Temperature 700 °C
	0.000146 ohm-cm @Temperature 800 °C
	0.000146 ohm-cm @Temperature 900 °C
	0.000147 ohm-cm @Temperature 1000 °C
	0.000147 ohm-cm @Temperature 1100 °C
	0.000147 ohm-cm @Temperature 1200 °C
	0.000147 ohm-cm @Temperature 1300 °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
	0.560 J/g-°C @Temperature 200 °C
	0.630 J/g-°C @Temperature 400 °C
	0.710 J/g-°C @Temperature 800 °C
	0.720 J/g-°C @Temperature 1000 °C
	0.740 J/g-°C @Temperature 1200 °C
	0.750 J/g-°C @Temperature 600 °C
Thermal Conductivity	11.0 W/m-K @Temperature 50.0 °C
	20.0 W/m-K @Temperature 600 °C
	22.0 W/m-K @Temperature 800 °C
	26.0 W/m-K @Temperature 1000 °C
	27.0 W/m-K @Temperature 1200 °C
Melting Point	1500 °C
Maximum Service Temperature, Air	1350 °C

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

Component Elements Properties	Original Value	Comments
Aluminum, Al	5.3 %
Carbon, C	<= 0.080 %
Chromium, Cr	20.5 - 23.5 %
Iron, Fe	>= 69.992 %
Manganese, Mn	<= 0.50 %
Silicon, Si	<= 0.70 %

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NSANDV072 / 18966

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