Evolving Stainless Steel Technology: Yongjin Secures a New Patent
Jiangsu Yongjin Metal Technology Co., Ltd. has successfully obtained a new high-nickel stainless steel patent.
The patent, published under CN120818658A, was filed on September 18, 2025, and officially published on October 21, 2025.
This innovation introduces a new preparation method designed to overcome the limitations of traditional high-nickel steels—particularly their insufficient hardness in heavy-load and wear-resistant environments.
Patent Overview and Technical Details
The invention is titled “A High-Hardness, High-Nickel Stainless Steel Material and Its Preparation Method.”
It proposes a metallurgical process that combines 304 stainless steel with electrolytic nickel plates, creating an alloy with superior mechanical properties.
Through a series of hot rolling and solution treatment steps, the material achieves excellent structural uniformity and strength.
These procedures ensure optimal nickel distribution and improved corrosion resistance, essential for industrial applications.
Advanced Surface Engineering Techniques
One of the core features of the patent is its dual surface strengthening process:
Laser Cladding:
A high-hardness alloy layer is deposited onto the steel surface, significantly improving wear resistance.Laser Shock Strengthening:
This step introduces compressive residual stresses, reducing surface fatigue and enhancing durability under high mechanical loads.
Together, these technologies enable the production of stainless steel capable of performing under severe wear and stress conditions.
Mechanical Performance and Industrial Applications
The high-hardness, high-nickel stainless steel demonstrates exceptional performance metrics.
It exhibits enhanced tensile strength, fatigue resistance, and anti-corrosion properties.
Such characteristics make it highly suitable for automotive, aerospace, and industrial tooling sectors—where prolonged durability and precision are vital.
It can also be applied in high-friction components, such as bearings, shafts, and wear plates.
Innovation and Industry Impact
This Jiangsu Yongjin patent marks a major advancement in stainless steel innovation.
By combining material science with precision laser technology, the company has set a new standard for next-generation stainless steel manufacturing.
It also reflects China’s growing emphasis on value-added metallurgical innovation, aiming to strengthen domestic and export competitiveness in specialty steel markets.
Quality Assurance and Future Outlook
Each stage of the process undergoes rigorous quality testing to ensure consistent mechanical properties.
The resulting material achieves a hardness level that exceeds conventional high-nickel steels while maintaining ductility and corrosion resistance.
Jiangsu Yongjin’s latest research positions the firm as a key innovator in advanced alloy technology.
This breakthrough will likely accelerate adoption across industries seeking high-performance, wear-resistant stainless materials.
Conclusion: Advancing Material Engineering
The high-nickel stainless steel patent by Jiangsu Yongjin represents a powerful step forward in material technology.
It blends chemical innovation, surface treatment, and precise engineering, ensuring the steel’s reliability in high-demand applications.
As industries pursue higher efficiency and durability, this development underscores China’s technical leadership in stainless steel research and innovation.
FAQS
Q1: What is the focus of Jiangsu Yongjin’s new patent?
The patent focuses on developing a high-hardness, high-nickel stainless steel using laser cladding and laser shock strengthening for superior wear resistance.
Q2: What makes this material different from conventional stainless steel?
It combines enhanced surface strength and hardness without compromising corrosion resistance or ductility, outperforming standard high-nickel grades.
Q3: Which industries can benefit from this innovation?
Automotive, aerospace, and heavy machinery sectors can use this material for components exposed to high stress or friction.
Q4: What is the patent number and publication date?
The patent is registered under CN120818658A, published on October 21, 2025.
Q5: How does laser shock strengthening improve performance?
It creates compressive stresses on the surface, preventing cracks and extending the material’s fatigue life under repetitive mechanical loads.
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