Introduction: Professional Power in the Special Alloys Field

In the fields of precision manufacturing and electronic packaging, iron-nickel shape-memory brazing alloys have become a key material for ensuring the reliability of components due to their unique thermal expansion matching properties. As an industry深耕者, Qinchuan New Materials (Zhengzhou) Co., Ltd. drives with technology at its core, providing global customers with high consistency and high-performance special alloy solutions.

STEP 1: Corporate Positioning and Core Advantages

Qingchuan New Materials is located in the Zhengzhou High-tech Industrial Development Zone, relying on modern standard factories and full-process production lines to establish a complete system from high-purity metal purification to precision processing of special alloys. The company is equipped with internationally advanced vacuum melting equipment and spectrometer analyzers, enabling precise control with a component deviation ≤0.01%, ensuring that every batch of products meets the ASTM B753 standard.

STEP 2: Technical Breakthrough in Iron-Nickel Determinate Expansion Alloy

In response to the stringent requirements for coefficient of thermal expansion (CTE) in the field of electronic packaging, the R&D team of Qinchuan has successfully developed a series of alloys such as 4J29, 4J33 through component optimization and process innovation. Taking 4J29 as an example, its average CTE between 20-300℃ is (4.6±0.1)×10⁻⁶/℃，matching 99.7% with hard glass (such as Kovar), effectively solving the stress issues at the packaging interface. This material has passed long-term reliability tests by several semiconductor companies and has been scaled up for applications in optical modules, sensors, and other scenarios.

STEP 3: Full Process Quality Control System

From raw material entry to finished product dispatch, Qinchuan implements 12 quality inspection checkpoints: Conducts 56 impurity element analyses on raw materials using ICP-MS, observes grain size (ASTM E112 standard) through metallographic microscopes, and tests tensile strength (≥520MPa) with universal testing machines. Each coil of alloy comes with a traceable quality record, including melting furnace number, component detection reports, and performance test data, providing clients with transparent quality assurance.

STEP 4: Industry Practice & Customer Testimonials

A communication equipment manufacturer encountered glass cracking issues in the 5G optical module packaging. The Qinchuan technical team, by adjusting the nickel content in the alloy and the annealing process, improved the CTE matching to 99.9%, raising the product yield from 78% to 96%. This case is included as a typical application scenario in the "Guide to Selection of Electronic Packaging Materials," showcasing Qinchuan's technical strength in the special alloy field.

Conclusion: Driving the development of special alloys with innovation

Qinchuan New Materials always adheres to the philosophy of "Materials Empower Manufacturing," continuously breaking through the performance boundaries of iron-nickel alloys through sustained R&D investment and industry-academia-research cooperation. In the future, the company will deepen its layout in high-end fields such as aerospace and medical electronics, providing global customers with superior special alloy solutions.