Ceradyne SEMICORE® S1-5B MMPA 16/18 SmCo 5 Samarium Cobalt Magnet

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Ceradyne SEMICORE® S1-5B MMPA 16/18 SmCo₅ Samarium Cobalt Magnet (discontinued **)
Categories:	Metal; Electronic/Magnetic Alloy; Nonferrous Metal; Cobalt Alloy
Material Notes:	Magnetic alignment parallel to Compaction Axis Applications: Microwave amplifiers and oscillators for airborne equipment TWT modules for phased array radar Small motors for severe thermal conditions Hermetic magnetic couplings to replace shaft seals Lightweight generators, usually for aircraft Vane actuators for missiles Particle beam focusing, quadrupoles, lenses, wigglers, etc. Magnetic bearings, gyros, vacuum pumps, accelerometers Various mechanisms in disk drives, cameras, tape drives, and miniature loudspeakers and earphones; where small size is important Magnetic alignment parallel to compaction angle. Information provided by Ceradyne Company Ceradyne was acquired by 3M in 2012. The product line has been extensively renamed and reconfigured.
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Physical Properties	Original Value	Comments

Density	8.40 g/cc

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000500 ohm-cm
Magnetic Coercive Force, H_c	>= 1800 Oe	Intrinsic
	7700 - 8300 Oe
Magnetic Remanence, B_r	8000 - 8500 Gauss
Magnetic Maximum Energy Product, BH	16 - 18 MGOe
Curie Temperature	700 °C

Thermal Properties	Original Value	Comments
CTE, linear	7.00 µm/m-°C @Temperature 20.0 °C
Thermal Conductivity	0.0250 cal cm/sec-cm²-°C

Descriptive Properties
Room Temperature Compensation, RTC, %/°C	-0.045

**
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NCERDN01 / 15866

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