Mu Metal mechanical properties
Mu Metal ® Mechanical properties at ambient temperature (reference guide)
Density: 8.7 [g/cm^3]
Youngs Modulus: 225 [GPa]
Poissons Ratio: 0.29
Yield Strength: 280 [MPa]
Ultimate Tensile Strength: 700 [MPa]
Thermal Conductivity: 19 [W/(m*K)]
Linear Expansion: 1.2 [10^-5m/m/C]
Specific Heat: 460 [J/(kg*K)]
Melting Point: 1440 [?C]
Resistivity: 55 [µ? cm]
Formability: Good
Weldability:Good
Material Characteristics: High initial permeability and maximum permeability with minimum hysteresis losses
Available forms: Sheet (strip and foil) bar, tube, wire
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D5 Creation
What are the standard thicknesses for sheet and foil stock? We are looking to create a highly permeable magnetic flux core (not a shield) using thin laminations of electrically insulated mumetal. The stack of laminated sheets or foil would be completed in a manner identical to that used for electrical steel, but we are looking at frequencies in the range of 5 kHz to possibly as high as 50 kHz. We need high permeability with low losses. Thank you in advance.
Where might we obtain samples for testing?
Thank you for your e mail
Mumetal is readily available in thickness’s from 0.1mm – 0.2mm* material with Magnesium Methylate coating for winding into cores and producing laminations etc. This coating provides protection during the final heat treatment (1150 deg C for 4 hours in pure hydrogen) and also helps to reduce eddy current losses.
Standard mu metal (without coating) is available in foil and sheet to the following thickness’s
0.050mm
0.100mm
0.127mm
0.200mm
0.250mm
0.350mm
0.500mm
0.800mm
1.000mm
1.500mm
2.000mm
2.500mm
3.000mm
5.000mm
* Coated material can be available in other thickness’s depending on quantity required, usually up to a maximum thickness of about 0.5mm.