Spherical Iron Nickel Alloy Soft Magnets Powder
Iron-nickel alloy powder (Fe-Ni powder) is a high-performance metallic powder composed primarily of iron (Fe) and nickel (Ni), with trace amounts of other alloying elements such as cobalt (Co), molybdenum (Mo), or chromium (Cr). This magnetic powder exhibits fine, spherical particle morphology, ensuring excellent flowability and packing density for advanced manufacturing processes.Â
Alloy 36 powder (also known as Invar 36 powder or Fe-Ni36 powder) is a spherical, gas-atomized metal powder composed of 36% nickel (Ni) and 64% iron (Fe), engineered to deliver exceptional low thermal expansion and dimensional stability across extreme temperatures. This nickel-iron alloy powder is widely used in precision industries where thermal distortion must be minimized.
Princeton Powder is a leading supplier of alloy 36 powder. We specialize in a comprehensive range of spherical powder products and possess extensive expertise in additive manufacturing (3D printing) industry. With our expertise, we are confident in supporting your projects effectively and provide you with reliable solutions.
Spherical Invar 36 Powder
Formula | Invar 36, Alloy 36, FeNi36 |
Synonyms | spherical Invar 36 particles, spherical alloy 36 powders, Invar 36 Powder, FeNi36 thermal spray powder, Invar 36 gas atomized powder |
Appearance | Black Powder |
Particle Size | 15-53 um, 45-105 um, can be customized upon request |
Melting Point | 1427°C |
Density | Â 8.05 g/cm 3 |
Tensile Strength, Ultimate | 717 MPa |
Tensile Strength, Yield | 679 MPa |
Description of Spherical Invar Powder
Invar, also known as FeNi36 or Invar 36, is a nickel-iron alloy with 36% nickel. Alloy 36 has an extremely low coefficient of thermal expansion (CTE) around room temperature. This means that Invar expands very little when heated, making it ideal for applications where dimensional stability is crucial.
Spherical FeNi36 powder is a finely ground form of the FeNi36 alloy, containing approximately 36% nickel and 64% iron. Invar 36 Powder is used in 3D printing, thermal coatings, and magnetic components, offering low thermal expansion and high stability.
Invar 36 Powder Chemical Composition
| Chemical Composition（wt%） | ||||||
Ni | Cr | Co | Mg | Mn | C | Al | |
Invar 36 | 36 | ≤0.25 | ≤0.5 | ≤0.1 | ≤0.6 | ≤0.05 | ≤0.1 |
Fe | Si | P | S | Ti | Zr | O | |
Balance | ≤0.4 | ≤0.015 | ≤0.015 | ≤0.1 | ≤0.1 | ≤0.08 | |
Particle Size | 0-5μm, 5-15μm, 15-45μm, 45-75μm, 45-150μm, or customized. | ||||||
Production Methods for Iron Nickel Powder
| Method | Details |
|---|---|
| Gas atomization | Melted alloy poured through nozzle, disintegrated by high-pressure gas jets into fine powder |
| Water atomization | Molten stream broken into droplets by high-velocity water jets |
| Rotating electrode process | Molten material flung off spinning electrode by centrifugal force |
| Carbonyl process | Thermal decomposition of metal carbonyls, followed by comminution |
| Mechanical alloying | Repeated cold welding and fracturing of powder particles in a ball mill |
Iron Nickel Powder Applications
| Application | Details |
|---|---|
| Soft magnets | High permeability, low coercivity allows efficient magnetization/demagnetization |
| Electromagnetic shielding | Absorbs EMI/RFI interference across wide frequency range |
| Welding/brazing | Excellent oxidation resistance facilitates joining of materials |
| Metal injection molding | Ideal for complex net-shape part fabrication |
| 3D printing | Print intricate components with magnetic functionality |
| Electromagnetic actuators | Used in solenoids, motors, generators, sensors |
| Microwave devices | Cores, circulators, isolators, filters |
| inductors/transformers | Efficient magnetic flux linkage for electrical components |
| Sintered structural parts | High hardness and strength after compaction and sintering |
Spherical Invar 36 Powder Reference
Additive manufacturing of Invar 36 alloy
- Invar 36 alloy, renowned for its ultra-low coefficient of thermal expansion (CTE), is a functional Fe–Ni alloy that finds wide applications in aerospace and precision instruments. Additive manufacturing (AM), as a rapid digital manufacturing process, can efficiently and flexibly fabricate Invar 36 alloy parts with complex geometric and exceptional properties.
Invar 36 is perfect for precision instruments, cryogenic equipment, aerospace parts, optical devices, and molds requiring minimal thermal expansion.