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Permalloy 80 / Mumetal Sheet Plate
xxheise
Permalloy 80 also known as Mumetal sheet plate is a high performance nickel iron molybdenum soft magnetic alloy compliant with ASTM A753 Alloy 4 and UNS N14080 standards. Featuring ultra high magnetic permeability and low coercivity, this magnetic shielding sheet delivers excellent low frequency magnetic shielding performance for precision electronic systems. Supplied in annealed flat plate with stable internal structure, it is widely used for sensor shielding housings, transformer cores, instrument magnetic shields and aerospace electronic components. Custom cutting and sizing services are available with full mill test certification for quality guarantee.
WhatsApp ：8613052238878
Email ：elena@shengxisteel.com

- PRODUCT PARAMETERS -

Product Information Table


Item

Details

Product name

Permalloy 80 / Mumetal Soft Magnetic Alloy

Material

Permalloy80, Mumetal, HyMu80, UNS N14080,1J85

Standard

ASTM A753 Alloy4, MIL-N-14411

Type

Nickel-iron-molybdenum high permeability soft magnetic alloy

Product form

Sheet, strip, foil, round bar, rod

Application

Magnetic shielding housing, current sensor core, precision transformer, relay core, electronic instrument component

Explanation

Mumetal delivers superior low-field permeability. Magnetic properties are highly sensitive to mechanical stress, hydrogen annealing treatment is required after fabrication


Product Selling Points


High-nickel soft magnetic alloy plate with ultra-high magnetic permeability and extremely low coercivity, delivering superior magnetic-shielding performance for low-frequency magnetic-field interference protection.

Excellent magnetic-shielding capability against external stray magnetic fields, ideal for precision instruments, sensors, electronic devices and aerospace magnetic-shielding component fabrication.

Fine uniform microstructure, stable magnetic properties after proper annealing treatment, consistent shielding effect for high-precision electronic and communication equipment.

Good ductility and process performance, can be laser cut, sheared and machined into custom shielding housings, shielding covers and magnetic-core parts according to customer drawings.

Complete material test reports are available, strict quality control for magnetic-property inspection, widely used in medical equipment, aerospace, laboratory instrumentation and industrial electronic anti-interference projects.


Chemical Composition wt.%


Ni

Mo

Fe

Mn

Si

C

P

S

79.0-81.0

4.7-5.2

Balance

0.3-0.6

0.1-0.4

≤0.03

≤0.02

≤0.02


Typical Magnetic Properties


Item

Value

Saturation Bs

0.75 T

Max permeability

≥400000

Coercivity Hc

≤0.4 A/m

Density

8.78 g/cm³


- FACTORY DISPLAY -

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We have our own independent factory which can provide one-stop service for steel cutting, forming and surface treatment. The factory has a strict quality inspection system and various precision testing instruments, and has passed all the third party quality tests such as SGS, BV and CE.

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【 OUR CERTIFICATIONS 】

- CUSTOMER VISITS -

We are listed as a high-quality supplier by many overseas customers andforeign trade companies.

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- PRODUCTION AND PROCESSING -

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- PACKING & DELIVERY -

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- FAQ -

Q1: What is Permalloy 80 Mumetal sheet plate used for? 

Permalloy 80 Mumetal sheet plate is a professional soft magnetic shielding alloy material, mainly used for low frequency magnetic field shielding, precision sensor protection, electronic equipment anti magnetic interference and industrial instrument magnetic core manufacturing.

Q2: What standards does your Mumetal plate follow? 

Our Permalloy 80 sheet plate conforms to ASTM A753 Alloy 4 and UNS N14080 international standards, matching GB 1J85 grade. Each batch provides complete chemical composition and magnetic performance test reports.

Q3: What are the advantages of Permalloy 80 magnetic shielding plate?

This nickel iron molybdenum alloy plate features ultra high permeability, low magnetic loss and stable shielding effect. It effectively isolates external magnetic interference and protects sensitive electronic components from signal distortion and failure.

Q4: What sizes and processing services do you offer? 

We supply standard Mumetal sheet plate with thickness from 0.5mm to 10mm, supporting custom length and width cutting, flat grinding and bending processing to meet diverse precision manufacturing needs.

Q5: Why hydrogen annealing is required for processed Mumetal plate? 

Mechanical cutting and bending will weaken the magnetic performance of Permalloy 80 plate. Professional hydrogen annealing treatment can restore its original high permeability and optimal magnetic shielding capacity.


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