CuMn30Ni5 Manganese Copper Alloy Flat Wire

Overview

CuMn30Ni5 Manganese Copper Alloy Flat Wire is engineered for extreme high-temperature and high-resistivity applications, combining resistivity (0.42-0.48 μΩ·m) and tensile strength (600-800 MPa) through optimized Mn-Ni-Cu composition (28-32% Mn, 4-6% Ni). With outstanding oxidation resistance and creep stability, it operates reliably from -60°C to 450°C, ideal for power electronics, aerospace heaters, and nuclear systems. Compliant with ASTM B267 and IEC 60168, offering full traceability certification.

Limiting Chemical Composition, %

Manganese（Mn）................................................................................................................................28.0-32.0

Nickel（Ni）...............................................................................................................................................4.5-5.5

Copper（Cu）...........................................................................................................................................Balance

Other Impurities is Iron, silicon, carbon strictly controlled，Total ≤0.5.

Main Properties

Technical Specifications

Material Properties

● Ultra-High Resistivity:

3-5x higher than standard copper alloys for current-limiting applications

● High-Temp Stability:

＜0.8% resistivity drift after 1000hrs at 450°C

● Radiation Hardness:

Withstands 10⁷ rad cumulative gamma dose

● Ultra-Low Thermal EMF:

Cu-CuMn30Ni5 pair EMF≤15μV/°C

Core Advantages

● Extreme Environment Certified:

Passes MIL-STD-810H thermal shock testing (-65°C↔+175°C)

● Precision Forming:

Capable of 0.05mm ultra-fine wire drawing (±0.001mm tolerance)

● Global Compliance:

Meets NADCAP aerospace special process requirements

Typical Applications

● Power Transmission:

HV circuit breaker contact springs, vacuum interrupter components

● Nuclear Systems:

Reactor control rod drive mechanism wiring

● Aerospace:

Rocket engine ignition coils, satellite thruster heaters

● Industrial Heating:

Semiconductor diffusion furnace heaters, glass melting electrodes

Industries Served

● High-Voltage Electrical Equipment

● Nuclear Energy & Particle Accelerators

● Aerospace Propulsion Systems

● Specialty Glass & Ceramics Manufacturing

● Semiconductor High-Temp Process Tools

Packaging & Certifications

● Vacuum-Sealed Packaging: Argon-filled stainless steel cans for long-term storage

● Certifications: ASTM B267, IEC 60168, NADCAP AC7108, AS9100D

Why Choose CuMn30Ni5?

● Material Innovation:

Exclusive patented alloy formula (Patent: CN202310627981.1)

● Smart QC:

Real-time resistivity monitoring (±0.5% accuracy)

● Technical Ecosystem:

Free high-temperature resistivity simulation tools

Available Forms

We provide you with a variety of product forms, including but not limited to

● Strip & Foil

● Round Wire &Flat Wire

● Bar & Rod

● Electrothermal Strip

● Flange & Ring

● Wire & Welding

● Reststance Wire

● Electric Alloy Wire

● Electric Furnace Bar

● Customize