AD-MU Alloy Specifications
AD-MU Specifications
- AD-MU Magnetic Shielding Alloys protect permanently.
- AD-MU Magnetic Shielding Alloys will not saturate when properly used.
- No excessive loss of low, medium or high permeability from shock.
- Relatively stable permeability characteristics are exhibited after final annealing.
- Minimal retentivity is displayed by AD-MU Magnetic Shielding Alloys. This for any alloy of a given permeability.
- AD-MU Magnetic Shielding Alloys are compliant with EU-Rohs directive 2002/95/EC. They are certified with full compliance with DFARS clause 252.255-7014 (Alt 1) and the REACH program.
- AD-MU-80 & AD-MU-48 meet material specification ASTM A 753-08. AD-MU-80 and AD-MU-48 are equivalent to MIL-N-14411c Comp.1 & 2 which is now obsolete.
Typical Electrical Characteristics
High Permeability
(AD-MU-80)
| Initial Permeability at 40 gauss | 55,000 – 75,000 |
| Permeability at 100-200 gauss | 70,000 – 100,000 |
| Max Permeability | 250,000 – 300,000+ |
| Saturation Induction gauss | 7,600 – 8,000 |
| Coercive Force oersteds | < 0.015 |
| Note: Permeability values can vary depending on various annealing cycles and whether annealed in a commercial or laboratory furnace. | |
Medium Permeability
(AD-MU-48)
| Initial Permeability at 40 gauss | 11,500 |
| Permeability at 100-200 gauss | 20,000 |
| Max Permeability | 130,000 |
| Saturation Induction gauss | 15,500 |
| Coercive Force oersteds | 0.05 |
Low Permeability
(AD-MU-00)
| Initial Permeability at 40 gauss | 300* |
| Permeability at 100-200 gauss | 1,300 |
| Max Permeability | 3000 |
| Saturation Induction gauss | 22,000 |
| Coercive Force oersteds | 1 |
| * Unannealed State | |
Typical Physical Properties
| High Permeability (AD-MU-80) | Medium Permeability (AD-MU-48) | Low Permeability (AD-MU-00) | |
|---|---|---|---|
| Density (lb/in³) | 0.316 | 0.249 | 0.283 |
| Thermal Expansion Coefficient / ℉(66℉-212℉) | 7.0 x 10.6 | 4.6 x 10.6 | 7.6 x 10.6 |
| Thermal Conductivity (BTU/in/ft²/hr/℉) | 136 | 90 | -- |
| Electrical Resistivity (ohm-cir mil/ft) | 349 | 290 | -- |
| Curie Temperature (℉) | 845 | 932 | -- |
Typical Mechanical Properties
| High Permeability (AD-MU-80) | Medium Permeability (AD-MU-48) | Low Permeability (AD-MU-00) | |
|---|---|---|---|
| Tensile Strength (lbs/in²x10³) | 90 | 85 | 45 |
| Yield Strength (lbs/in²x10³) | 35 | 40 | 30 |
| Modules of Elasticity (lbs/in²x10³) | 32 | 24 | 29.5 |
| Elongation in 2in (%) | 40 | 25 | 30 |
| Hardness (Rockwell B) | 62/75 | 59/68 | 65 |