FeNi50 metal powder is a medium to high nickel iron-based alloy powder based on the iron nickel binary system with a nickel content of about 50 wt.%. Its typical characteristics include stable austenite structure, excellent thermal expansion matching ability, good toughness, and adjustable magnetic properties. In the material system, FeNi50 is between low nickel structural alloys and high nickel Invar/soft magnetic alloys, and is commonly used in scenarios with high requirements for dimensional stability, thermal cycling reliability, and microstructure stability.

What is its chemical composition?

Typical chemical composition (wt.%):
Ni：48.0–52.0%
Fe: Excess
C. S, O, N: Strictly controlled (usually ≤ 0.02%)
The core of composition design is that after the nickel content reaches about 50%, the alloy maintains a stable single austenite phase in the range of room temperature to medium high temperature; Fe Ni atomic sizes are close, forming a continuous solid solution with uniform solid solution strengthening and low risk of structural segregation; Low impurity control significantly improves the microstructure consistency of powders during sintering, cladding, and additive manufacturing processes;

What are its powder characteristics?

Powder morphology: high sphericity, smooth surface, low proportion of satellite powder
Particle size distribution: 15-53 μ m/20-63 μ m (customizable)
Loose density: 4.5-5.0 g/cm ³
Liquidity: ≤ 15 s/50 g (Hall Flow)
Oxygen content: usually ≤ 0.05 wt.%
Good sphericity and low oxygen content enable FeNi50 powder to exhibit stable powder spreading and forming behavior in processes such as laser melting, plasma spraying, and hot isostatic pressing.

What are its mechanical and physical properties？

Typical performance range (related to process status):
Tensile strength: 550-750 MPa
Yield strength: 220-350 MPa
Elongation rate: 30-45%
Hardness: 150-220 HV
Thermal expansion coefficient (20-400 ℃): approximately 9.5-11.0 × 10 ⁻⁶/K
Magnetism: It can manifest as weak or low magnetic states (related to heat treatment). Overall, FeNi50 does not pursue ultimate strength, but emphasizes high plasticity, dimensional stability, and service reliability.

Which fields can it be applied in?

1.Electronic and precision device structural components (thermal expansion matching parts)
2.Intermediate transition layer of composite materials
3.Precision molds and functional structural components
4.Magnetic shielding or adjustable magnetic components
5.Aerospace thermal stability structural components, especially
6.It is suitable for use in working conditions with frequent temperature changes and strict dimensional tolerance requirements.

FeNi50 metal powder is an iron nickel alloy powder material with balanced performance, wide process window, and outstanding structural stability. It provides excellent thermal stability, processing reliability, and long-term service safety without pursuing extreme indicators. It is an important transitional alloy system for connecting structural materials and functional materials. SAT NANO always adheres to promoting industry development through technological innovation and is committed to providing better products and services to global customers. Follow us for more cutting-edge material technology and industrial application solutions!

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