Mu-metal is a nickel–iron soft ferromagnetic alloy with very high
permeability, which is used for shielding sensitive electronic
equipment against static or low-frequency magnetic fields.
The name of Mu-metal came from the Greek letter mu (μ) which
represents permeability in physics and engineering formulas. A
number of different proprietary formulations of the alloy are sold
under different trade names. And it is no surprise that XUNSHI
could provide several of these alloys per customer requirement.
Most likely, people take ASTM A753 Alloy 4 as the spec of Mu-metal.
Chemical composition(wt, %)
| C | 0.05 max |
| Mn | 0.80 max |
| Si | 0.50 max |
| P | 0.02 max |
| S | 0.01 max |
| Cr | 0.30 max |
| Ni | 79.0-82.0 |
| Mo | 3.5-6.0 |
| Co | 0.50 max |
| Cu | 0.30 max |
| Fe | balance |
Application
- Electric power transformers, which are built with mu-metal shells
to prevent them from affecting nearby circuitry.
- Hard disks, which have mu-metal backings to the magnets found in
the drive to keep the magnetic field away from the disk.[6]
- Cathode-ray tubes used in analogue oscilloscopes, which have
mu-metal shields to prevent stray magnetic fields from deflecting
the electron beam.
- Magnetic phonograph cartridges, which have a mu-metal case to
reduce interference when LPs are played back.
- Magnetic resonance imaging (MRI) equipment.
- The magnetometers used in magnetoencephalography and
magnetocardiography.
- Photomultiplier tubes.
- Vacuum chambers for experiments with low-energy electrons, for
example, photoelectron spectroscopy.
- Superconducting circuits and especially Josephson junction
circuits.
- Fluxgate magnetometers and compasses as part of the sensor.
- Proximity sensors (inductive type)
Form of supply
- Cold rolled foil
- Cold rolled strip
- Hot rolled plate
- Forging stock
- Welded pipe
- Seamless pipe
- Cold drawn wire
About XUNSHI
Suzhou Xunshi New Material Co. Ltd- referred as XUNSHI hereafter,
is a professional manufacturer of high-performance alloy products.
XUNSHI is engaged in supplying high quality and cost-effective
Superalloy, Anti-Corrosion Alloy, Precision Alloy, Special
Stainless Steel and Magnetostrictive Material to customers
worldwide.
Why XUNSHI
· Highly experienced in alloy industry
· Top experts of industry in China
· Advanced technology and process from top famous institutes in
China
· Advanced devices through whole production and inspection process
· Strict quality control system
· Company motto: best service, most value
· Smart sales policy
Service Items of XUNSHI
· Non-standard product research and pre-production
· Fabrication of products
· Cutting, splitting for sheets and plates in stock
· Heat treatment (Solution treatment, aging harden treatment,
anneal, spring temper, quench etc.)
· Surface finish (peeling, gridding, polishing)
· Logistics service
· Customized packing service (also for exporting)
· Import and export (XUNSHI is certificated)
· Document translation
· Hard-to-find material sourcing
Customers of XUNSHI
Customers of XUNSHI are all over China (Taiwan and Hong Kong
included). And we are exporting to USA, Canada, Italy, UK, Poland,
Greece, Russia, Turkey, Iran, Israel, South Africa, South Korea,
North Korea, India, Argentina, and Brazil and so on. Customers from
30+ countries trust us.
Where is XUNSHI
A- XUNSHI is in Huaqiao, Kunshan, 215332 China, which is very
closed to Shanghai.
B- Xunshi is around 80KM from Shanghai Pudong International Airport
(PVG).
C- 20KM from Shanghai Hongqiao Airport
D- 20KM from Shanghai Hongqiao Railway Station
E- You can contact XUNSHI sales for a pickup service.
