Giant Magnetostrictive Materials from Metall Rare Earth Limited

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Giant Magnetostrictive Materials
	Magnetostrictive effect was firstly found in 1842 by James Prescott Joule (1818-1889) who positively identified the change in length of an iron sample as its magnetization changed. This effect, known as the Joule effect, is the most common magnetostrictive mechanism employed in magnetostrictive actuators. The earlier applications were developed with nickel and other magnetostrictive materials that exhibit bulk saturation strains of up to 100 mL/L. With the discovery of "giant" magnetostrictive alloys, such as Tb-Dy-Fe alloy in the 1970s (materials capable of over 1000 m L/L), new magnetostrictive transducer technologies are used for magnetostrictive devices include ultrasonic cleaners, high force linear motors, positioners for adaptive optics, active vibration or noise control systems, medical and industrial ultrasonics, pumps, and sonar. Our high quality giant magnetostrictive materials now provide with various performances and forms for different actuators and sensors.

Seltene Erden Terres Rares Tierras Raras

Performance Specifications

Product Grade	TDF Super	TDF Premier	TDF Plus
Magnetostriction ( 39.8kA/m, 10MPa, x10-6)	>1100	800-1100	500-800
Tensile Strength ( MPa)	>25	>25	>25
Compressive Strength ( MPa)	>400	>400	>400
Operation Temperature ( Celsium degree )	-40 ~ 150	-40 ~ 150	-40 ~ 150
Density ( g/cm3)	9.15 ~ 9.25	9.15 ~ 9.25	9.15 ~ 9.25
Modulus ( N/m2, x 10 10 )	2.5 ~ 7.0	2.5 ~ 7.0	2.5 ~ 7.0
Response time ( s, x 10-3 )	1	1	1
Precision ( microns )	0.1 ~ 0.001	0.1 ~ 0.001	0.1 ~ 0.001

Parts Specifications

Powder	fineness to 325mesh, 40mesh
Rod	diameter to 6mm, 8mm, 10mm, 20mm, 50mm and length to 25cm
Tube	diameter 20mm, 30mm, 40mm, 60mm, and length to 5cm
Disc	diameter 6mm, 10mm, 20mm, 30mm, 40mm, 60mm, and length to 5cm
Slab	thickness to 5mm, 1cm, 2cm, 3cm, width to 40cm
Special	As per customer's blueprints

The standard specifications are only for reference, custom specification manufactures are welcomed. More detailed information including MSDS sheet, lot weight, packing condition, lead time and price are all ready on request, please just click at Request For Quotation, you will receive our prompt reply within 24 hours.

We export to over 30 countries worldwide, and hold a large stock of common Rare Earth Oxides, Metals & Compounds, including some specialty alloys. For research and samples, we offer 2-3 days delivery to the EU, USA, Japan, Korea and 3-5 days delivery for the rest of the world.

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