Permalloy, Fittings,,E FORU

British Specs:，American Specs:MIL-N-14411 C ASTM A753，German Specs:

### **Permalloy - Fittings Product Overview** **Permalloy** is a nickel-iron soft magnetic alloy renowned for its extremely high magnetic permeability and low coercivity. The **Fittings** form encompasses precision-manufactured components designed for connecting, terminating, or transitioning magnetic circuits and shielding systems in high-performance electronic and scientific applications. * **Common Names:** Permalloy Fittings, High Permeability Nickel-Iron Alloy Fittings * **Key Variants:** Permalloy 45 Fittings, Permalloy 80 Fittings --- #### **1. Chemical Composition** | Element | Permalloy 45 (%) | Permalloy 80 (%) | |---------|------------------|------------------| | **Nickel (Ni)** | 45-50 | 77-83 | | **Iron (Fe)** | Balance | Balance | | **Molybdenum (Mo)** | - | 0.5-2.0 | | **Copper (Cu)** | - | 3-5 | | **Manganese (Mn)** | 0.30-0.60 | 0.30-0.60 | | **Silicon (Si)** | 0.10-0.30 | 0.10-0.30 | | **Carbon (C)** | 0.02 max | 0.02 max | --- #### **2. Physical Properties** | Property | Permalloy 45 | Permalloy 80 | |----------|--------------|--------------| | **Density (g/cm³)** | 8.17 | 8.74 | | **Melting Point (°C)** | 1420 | 1450 | | **Curie Temperature (°C)** | 440 | 460 | | **Electrical Resistivity (μΩ·m)** | 0.45 | 0.55 | | **Thermal Conductivity (W/m·K)** | 18 | 16 | | **Thermal Expansion (μm/m·°C)** | 12.0 | 12.5 | --- #### **3. Magnetic Properties** | Property | Permalloy 45 | Permalloy 80 | |----------|--------------|--------------| | **Initial Permeability (μi)** | 2,500-4,000 | 20,000-50,000 | | **Maximum Permeability (μmax)** | 25,000-50,000 | 70,000-150,000 | | **Saturation Induction (T)** | 1.5-1.6 | 0.70-0.82 | | **Coercive Force (A/m)** | 8-16 | 1.2-2.4 | | **Residual Induction (T)** | 0.4-0.6 | 0.15-0.30 | --- #### **4. Mechanical Properties** **Typical Properties for Fittings in Annealed Condition:** * **Tensile Strength:** 480-550 MPa * **Yield Strength (0.2% Offset):** 250-320 MPa * **Elongation:** 35-45% in 2 inches * **Hardness:** 65-80 HRB * **Modulus of Elasticity:** 150-155 GPa * **Impact Strength:** 40-60 J (Charpy V-notch) --- #### **5. Product Specifications & Applications** **Fittings Types and Configurations:** * **Connector Fittings:** - Magnetic shield connectors and adapters - Feedthrough fittings for electromagnetic applications - Flange connectors for magnetic enclosures - Transition fittings between different magnetic systems * **Adapter Fittings:** - Size reducers/enlargers for magnetic circuits - Angle connectors (45°, 90°) for complex layouts - Cross and tee fittings for magnetic distribution - Custom transition pieces for specialized applications * **Specialty Fittings:** - Custom-shaped magnetic components - Complex geometric magnetic assemblies - Integrated mounting fittings for magnetic systems - Vacuum-compatible magnetic fittings **Primary Applications:** **Electronics & Instrumentation:** * **CRT Display Fittings:** Magnetic shielding connectors for display systems * **Sensor Housing Fittings:** Protection fittings for magnetic sensors * **Transformer Enclosure Fittings:** Magnetic flux containment fittings * **Electron Microscope Components:** Magnetic shielding connectors **Scientific & Research:** * **Research Chamber Fittings:** Magnetic shielding connectors for experimental apparatus * **Laboratory Equipment:** Specialized fittings for sensitive instruments * **Physics Research:** Beam line component fittings and magnetic connectors * **Vacuum System Fittings:** Magnetic shielding for vacuum applications **Medical & Healthcare:** * **MRI System Fittings:** Peripheral magnetic shielding components * **Medical Equipment:** Shielding fittings for sensitive medical devices * **Research Instrumentation:** Components for medical research equipment **Aerospace & Defense:** * **Avionics Shielding Fittings:** Magnetic protection for aircraft systems * **Satellite Component Fittings:** Spacecraft instrumentation protection * **Military Electronics:** Radar and communication system shielding fittings --- #### **6. International Standards** | Standard Type | Standard Number | Title / Specification | |---------------|----------------|----------------------| | **ASTM** | **ASTM A753** | Standard Specification for Nickel-Iron Soft Magnetic Alloys | | **IEC** | **IEC 60404-8-6** | Metallic Magnetic Materials | | **MIL-SPEC** | **MIL-N-14411** | Nickel-Iron Magnetic Alloys | | **AMS** | **AMS 7701/7702** | Aerospace Material Specifications | | **ISO** | **ISO 9711** | Metallic Materials for Special Applications | | **DIN** | **DIN 17745** | Nickel-Iron Alloys with Special Magnetic Properties | --- #### **7. Manufacturing & Quality Assurance** **Manufacturing Processes:** * **Precision Machining:** CNC turning, milling, and grinding * **Forming:** Cold and hot forming for complex shapes * **Joining:** Mechanical fastening preferred; limited welding capability * **Surface Treatment:** Special coatings and finishes for enhanced performance **Quality Control Measures:** * **Dimensional Inspection:** CMM verification of critical dimensions * **Magnetic Testing:** Permeability verification on sample coupons * **Leak Testing:** For vacuum and sealed applications * **Metallurgical Examination:** Grain structure and integrity assessment **Special Features:** * **Custom Engineering:** Tailored solutions for specific magnetic applications * **Prototype Development:** Rapid prototyping capabilities * **Volume Production:** Manufacturing capacity for production quantities * **Quality Certification:** ISO 9001, AS9100 compliance --- #### **8. Design Considerations** **Critical Design Parameters:** * **Magnetic Continuity:** Ensuring uninterrupted magnetic path in fittings * **Wall Thickness:** Optimized for magnetic performance and mechanical strength * **Joint Design:** Critical for maintaining magnetic shielding effectiveness * **Stress Management:** Minimizing mechanical stress in magnetic components **Application-Specific Configurations:** * **High-Vacuum Fittings:** Optimized for vacuum system applications * **Cryogenic Fittings:** Designed for low-temperature magnetic service * **Radiation-Hardened Fittings:** Suitable for nuclear applications * **Precision Instrument Fittings:** For sensitive measurement equipment --- **Summary** **Permalloy Fittings** provide engineered solutions for complex magnetic applications requiring precise mechanical interfaces and reliable magnetic performance. The availability of both Permalloy 45 (with higher saturation induction) and Permalloy 80 (with higher permeability) allows designers to select the optimal material based on specific application requirements for magnetic shielding, flux conduction, and circuit completion. These precision fittings enable the creation of sophisticated magnetic assemblies where superior permeability and minimum coercivity must be maintained through complex geometrical transitions. Compliance with **ASTM A753** and other international standards ensures material consistency and performance reliability for demanding applications in scientific research, medical imaging, aerospace systems, and precision instrumentation. Proper heat treatment in hydrogen atmosphere, careful machining practices, and appropriate joint design are crucial to preserve the exceptional magnetic properties throughout the system lifecycle.

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 2555 gallon liquid totes Special package is available on request.