Galfenol Curie Temperature Magnetostrictive Material High Magnetic Conductivity

High Magnetic Conductivity And Curie Temperature Magnetostrictive Material Galfenol

Magnetostrictive Material Galfenol

Galfenolis a new type of magnetostrictive material, the main elements are Fe and Ga,this alloy is called Gafenol because it was developed by Naval Ordnance Laboratory (NOL).

Galfenol was Published in 1999, that filled the gap between traditional ferro-nickel magnetostrictive material and Terfenol-D, Galfenol with excellent stress sensitivity, mechanical and magnetostrictive properties that not available by other intelligent materials.

Galfenol alloy has good mechanical toughness, small fragility, good ductility, large tensile strength, processing ability, can be rolled into thin strip, pulled into wire, etc.

Galfenol has good temperature characteristics, low saturation magnetization field and high magnetostrictive strain, high magnetic conductivity, high Curie temperature characteristics, the alloy can be widely used in sensing, precision, displacement measurement, transducer, brake and other fields.

The parameters of Galfenol

Composition, Fe81Ga19

Elastic modulus: 107 GPa

Sonic speed: 3,690 m/s

Tensile strength: 362MPa

Fatigue strength: 75MPa

Vickeldean hardness: 235HV

Thermal expansion coefficient: 10ppm/ °C @ 25 °C

Heat conductivity: 15-20W/ (m-K) @15 °C

Fuse point: 1,450 °C

Restivity: 8.14x10-8 Ω·M

Curie temperature: 670 °C

Saturated magnetostrictive factor: 250-320PPM

Saturating field: about 250Oe

Hc:6.048 Oe

d33:11~20

k33:0.27~0.65

μmax:178

Energy density: 0.3-0.6KJ/m3

Poisson ratio: 0.37

Forms available

Round bar

Square plate

Ring

Round plate

Tube

Atomized powder