Mu-Metal,Hy-Mu 80 Other/Similar Specs,,E FORU

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

### **Mu-Metal / Hy-Mu 80 - Other Forms & Similar Specifications** **Mu-Metal**, commercially known as **Hy-Mu 80**, is a nickel-iron soft magnetic alloy renowned for its extremely high magnetic permeability and low coercivity. Beyond standard forms, this specialized material is available in various configurations and has equivalent specifications across different international standards systems. * **Common Names:** Mu-Metal, Hy-Mu 80, High Permeability Alloy 80 --- #### **1. Chemical Composition** The chemical composition remains consistent across all product forms, ensuring reliable magnetic properties. | Element | Percentage (%) | Role in the Alloy | |:---|:---|:---| | **Nickel (Ni)** | 77.0 - 81.0 | Primary element for high permeability | | **Iron (Fe)** | Balance | Base magnetic element | | **Molybdenum (Mo)** | 4.50 - 5.50 | Enhances permeability and reduces coercivity | | **Copper (Cu)** | 0.10 - 0.30 | Improves corrosion resistance | | **Chromium (Cr)** | 0.10 - 0.30 | Enhances workability | | **Manganese (Mn)** | 0.30 - 0.60 | Deoxidizer and sulfur control | | **Silicon (Si)** | 0.10 - 0.30 | Improves magnetic properties | | **Carbon (C)** | 0.02 max | Minimized for optimal magnetic softness | --- #### **2. Physical Properties** Consistent physical properties across all product configurations. | Property | Value / Condition | |:---|:---| | **Density** | 8.75 g/cm³ (0.316 lb/in³) | | **Melting Point** | ~1450 °C (2640 °F) | | **Curie Temperature** | 410 - 430 °C (770 - 806 °F) | | **Electrical Resistivity** | 0.58 μΩ·m at 20°C | | **Thermal Conductivity** | 17 W/m·K at 20°C | | **Thermal Expansion Coefficient** | 12.5 μm/m·°C (20-300°C) | --- #### **3. Other Product Forms & Configurations** **Specialized Product Variants:** * **Pre-annealed Material:** Supplied with optimized magnetic properties * **Laminated Cores:** Stacked and bonded laminations * **Powder Form:** For metal injection molding (MIM) applications * **Epoxy-Coated:** Insulated for electrical applications * **Custom Fabricated:** Ready-to-install shielding assemblies **Specialized Forms:** * **Fine Wire:** Down to 0.05 mm diameter for specialized coils * **Ultra-Thin Foil:** As thin as 0.025 mm for flexible shielding * **Precision Etched Components:** Photochemical machining for complex shapes * **Sputtering Targets:** For thin-film deposition processes --- #### **4. International Standards & Cross-References** Comprehensive list of equivalent international specifications: | Standard System | Standard Number | Equivalent Designation | |:---|:---|:---| | **ASTM** | **ASTM A753** | Standard Specification for Nickel-Iron Soft Magnetic Alloys | | **MIL-SPEC** | **MIL-N-14411C** | Composition 1, Grade 1 | | **IEC** | **IEC 60404-8-6** | Metallic Magnetic Materials | | **AMS** | **AMS 7702** | Aerospace Material Specification | | **DIN** | **DIN 17745** | Nickel-Iron Alloys with Special Magnetic Properties | | **JIS** | **JIS C 2531** | Soft Magnetic Alloys | | **GB** | **GB/T 15018** | Chinese National Standard | --- #### **5. Industry-Specific Specifications** **Aerospace & Defense:** * AMS 7702: Aerospace Material Specification * MIL-N-14411C: Military Specification * Boeing Specification: BAC 5611 * Airbus Specification: AIMS 04-04-003 **Electronics & Electrical:** * IEC 60404-8-6: International Electrotechnical Commission * IEEE 287: Precision Instrumentation * EIA 364: Electronic Components **Medical & Healthcare:** * ISO 13485: Medical Devices Quality Management * FDA CFR 21: Food and Drug Administration * CE Medical Directive: 93/42/EEC --- #### **6. Similar & Alternative Alloys** **Direct Equivalents:** * **Hy-Mu 800:** Higher permeability variant * **Permalloy 80:** Similar nickel-iron composition * **Supermalloy:** Ultra-high permeability alternative **Related Magnetic Alloys:** * **Hy-Mu 800** (UNS K94800): 80% Nickel - higher permeability * **Permalloy 45** (UNS K94610): 45% Nickel - different characteristics * **Supermendur:** Iron-cobalt-vanadium alloy **Comparison with Key Alloys:** | Property | Hy-Mu 80 | Hy-Mu 800 | Permalloy 45 | |:---|:---|:---|:---| | **Nickel Content** | 80% | 80% | 45% | | **Initial Permeability** | 30,000-50,000 | 50,000-100,000 | 25,000-40,000 | | **Saturation Induction** | 0.70-0.82 T | 0.65-0.75 T | 1.50-1.60 T | | **Primary Application** | Magnetic Shielding | Sensitive Instruments | Transformer Cores | | **Coercive Force** | 0.8-1.6 A/m | 0.4-1.2 A/m | 2.0-4.0 A/m | --- #### **7. Special Applications & Custom Specifications** **Customized Variants Include:** * Modified molybdenum content for specific frequency response * Controlled grain size variants for special magnetic requirements * Ultra-low carbon grades for maximum permeability * Special surface finishes for specific applications * Custom thermal processing for optimized properties **Emerging Applications:** * **Quantum Computing:** Magnetic shielding for qubit protection * **Advanced Sensors:** Components for next-generation detectors * **Space Technology:** Magnetic components for satellite systems * **Medical Diagnostics:** Enhanced MRI and imaging components --- #### **8. Global Supply Chain Considerations** **Major Producers:** * Carpenter Technology (USA) * Vacuumschmelze (Germany) * Hitachi Metals (Japan) * Allegheny Technologies (USA) * Aperam (Europe) **Quality Certifications:** * ISO 9001:2015 Quality Management * AS9100 Aerospace Quality * IATF 16949 Automotive * ISO 14001 Environmental Management --- **Summary** **Mu-Metal (Hy-Mu 80)** demonstrates exceptional versatility across multiple international standards and specialized applications. The material's consistent chemical and physical properties ensure reliable performance whether specified under ASTM, MIL-SPEC, IEC, or other major standards systems. Understanding the cross-equivalency between different international specifications allows for global sourcing and manufacturing flexibility while maintaining the exceptional magnetic properties that make Hy-Mu 80 indispensable for critical magnetic shielding and sensitive instrument applications. The availability of specialized forms - including pre-annealed, laminated, powder, and custom fabricated variants - enables engineers to select optimal configurations for specific design requirements in aerospace, medical, research, and industrial sectors. The material's compatibility with emerging technologies ensures its continued relevance in advanced applications requiring the highest levels of magnetic permeability and minimum coercivity.

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 2544 gallon liquid totes Special package is available on request.