What Makes 4J32 Alloy Powder a Key Material in Precision Electronics

4J32 Alloy Powder is a precision iron-nickel-cobalt alloy designed for electronic packaging and glass-to-metal sealing. With its controlled thermal expansion and strong magnetic properties, it plays a critical role in high-reliability electronic and aerospace applications.

Precise Thermal Expansion Control

4J32 is known for its low and stable coefficient of thermal expansion (CTE), making it ideal for:

• Glass-to-metal hermetic seals

• Components requiring tight dimensional tolerances across temperature ranges

• Matching with ceramic or glass components in vacuum systems

Strong Magnetic and Mechanical Properties

This alloy provides:

• High initial permeability and stable magnetic performance

• Good tensile strength and ductility

• Compatibility with deep drawing and welding processes

These properties ensure long-term reliability in sensors, relay cores, and electromagnetic shielding.

Powder Characteristics for Advanced Manufacturing

HUAXIAO TECH supplies gas-atomized 4J32 Alloy Powder with:

• High sphericity and low oxygen content

• Uniform particle size distribution (typically 15–45 μm)

• Excellent flowability for metal additive manufacturing and injection molding

Application Fields

• Aerospace and satellite precision electronic packaging

• Sealing materials in electronic tubes and sensors

• High-frequency magnetic shielding components

• Custom precision parts produced via 3D printing

Benefits Summary

• Excellent thermal expansion matching for glass and ceramics

• Stable magnetic performance at low to medium frequencies

• Processability via powder metallurgy and additive manufacturing

• High reliability under thermal and mechanical stress

Frequently Asked Questions (FAQ)

Q1: What is the typical composition of 4J32 Alloy Powder?
A1: Approximately 52% Ni, 17% Co, balance Fe, with trace elements for CTE control.

Q2: What additive manufacturing methods are suitable?
A2: Powder bed fusion (PBF), selective laser melting (SLM), and MIM are all applicable.

Q3: What makes 4J32 better than 4J36 in some sealing applications?
A3: 4J32 offers better sealing compatibility with certain borosilicate glasses due to its slightly higher CTE.

Conclusion

4J32 Alloy Powder offers unmatched performance in thermal expansion control, magnetic response, and mechanical integrity, making it a reliable material for high-precision electronic and aerospace components.

For tailored material solutions and technical support, contact HUAXIAO TECH – your trusted alloy powder manufacturer.