Ni-Fe Functional Alloys Wire Mesh
Ni-Fe Functional Alloys Wire Mesh refers to a specialized woven or welded mesh product made from Nickel-Iron (Ni-Fe) alloys. These alloys are engineered for specific magnetic, thermal, and mechanical properties rather than just corrosion resistance.
| Grade (Alloy No.) | Nominal Composition | Core Functional Feature |
| 1J50 (Permalloy 50) | Ni 49–51%, Fe bal., C ≤0.03%, Si ≤0.3% | High permeability, low coercivity, soft magnetic for electronics |
| 1J79 (Supermalloy) | Ni 78.5–79.5%, Fe bal., Mo 4–5% | Ultra-high initial permeability, minimal hysteresis loss |
| NiFe 52/48; NiFe 70/30 | Ni 52/70%, Fe 48/30% | PTC heating, constant expansion, high temperature stability |
| Incoloy 800/800H | Ni 30–35%, Fe 40–47%, Cr 19–23% | High temperature oxidation/corrosion resistance, heat exchanger use |
Permalloy (approx. 80% Ni / 20% Fe)， Invar (approx. 36% Ni / 64% Fe)， 50/50 Ni-Fe， 42Ni-Fe and ect...
Key Functional Properties of Ni-Fe Functional Alloys Wire Mesh
Magnetic Shielding: The high permeability of alloys like Permalloy allows the mesh to act as a shield, absorbing and redirecting electromagnetic interference (EMI) and radio frequency interference (RFI). It is used to create "Faraday cages" for sensitive electronics.
Controlled Thermal Expansion: Invar mesh maintains its precise dimensions across a wide temperature range, which is critical in aerospace and optical applications.
Strength & Toughness: Ni-Fe alloys generally offer good ductility and mechanical strength, allowing for fine wire diameters that are still durable.
Corrosion Resistance: While not as resistant as high-chromium stainless steel, the high nickel content provides good resistance to corrosion in many environments (including reducing atmospheres and caustic conditions).
Typical Applications of Ni-Fe alloy wire meshes：
Electronics & Telecommunications: Magnetic shielding mesh for transformers, inductors, mobile phone antennas, MRI room walls (1J50/1J79); precision current sensor grilles
Industrial Heating: Self-limiting PTC heating mesh for plastic film heating, food drying, tank trace heating (NiFe 70/30)
Energy & Chemical: High-temperature gas/liquid filters for ethylene crackers, ammonia synthesis, sulfur recovery units (Incoloy 800); battery electrode support mesh for alkaline electrolyzers
Aerospace & Nuclear: Magnetic flux control components, radiation-resistant mesh liners, heat exchanger screens
Automotive: EV motor stator/rotor shielding mesh, fuel cell bipolar plate flow field meshes
