Sandvik Kanthal 145 R 15 Thermostatic bimetal

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Sandvik Kanthal 145 R 15 Thermostatic bimetal
Categories:	Metal; Superalloy; Iron Base
Material Notes:	KANTHAL 145 R 15 is a thermostatic bimetal which is recommended for use in the temperature range -20 to +250°C. In extreme cases it can be used at temperatures up to a maximum of +400°C. Typical applications for KANTHAL 145 R 15 are in circuit breakers, motor protection units, ammeters etc. High-expansive component: 15-7 Alloy(440 Designation, 45% of thickness) Low-expansive component: Invar 145 Alloy (430 Designation, 45% of thickness) Intermediate component: Copper (470 Designation, 10% of thickness) Information provided by Sandvik Composition: High-expansive component: Designation 440; 6.9% Mn; 17% Ni; 76.1% Fe Low-expansive component: Designation 430; 0.3% Mn; 36.5% Ni; Bal. Fe
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Physical Properties	Metric	English	Comments

Density	8.20 g/cc	0.296 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Vickers	120	120	Low-expansive component
	140	140	High-expansive component
	210	210	Low-expansive component, Cold-worked 20%
	260	260	High-expansive component, Cold-worked 20%
Tensile Strength, Ultimate	450 MPa	65300 psi	Low-expansive component
	550 MPa	79800 psi	High-expansive component
Tensile Strength, Yield	240 MPa	34800 psi	High-expansive component
	270 MPa	39200 psi	Low-expansive component
Elongation at Break	40 %	40 %	High-expansive component
	40 %	40 %	Low-expansive component
Modulus of Elasticity	170 GPa	24700 ksi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000140 ohm-cm @Temperature 0.000 °C	0.0000140 ohm-cm @Temperature 32.0 °F	Bimetal
	0.0000220 ohm-cm @Temperature 200 °C	0.0000220 ohm-cm @Temperature 392 °F	Bimetal
	0.0000250 ohm-cm @Temperature 300 °C	0.0000250 ohm-cm @Temperature 572 °F	Bimetal

Thermal Properties	Metric	English	Comments
CTE, linear	1.90 µm/m-°C @Temperature 30.0 - 130 °C	1.06 µin/in-°F @Temperature 86.0 - 266 °F
	48.0 µm/m-°C @Temperature 30.0 - 130 °C	26.7 µin/in-°F @Temperature 86.0 - 266 °F	High-expansive component
Specific Heat Capacity	0.460 J/g-°C @Temperature 20.0 °C	0.110 BTU/lb-°F @Temperature 68.0 °F
Thermal Conductivity	48.0 W/m-K @Temperature 20.0 °C	333 BTU-in/hr-ft²-°F @Temperature 68.0 °F
Maximum Service Temperature, Air	400 °C	752 °F
Minimum Service Temperature, Air	-20.0 °C	-4.00 °F

Descriptive Properties
Linearity Range, °C	-20 to 200
linearity Temperature Range, °C	-20 to 250
Specific thermal curvature, /K	0.0000277
Specific deflection, /K	0.0000149

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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