Cemented Carbides: The Future Trend in High-Strength Materials

As the manufacturing sector advances toward high-end and intelligent production, cemented carbides, owing to their exceptional hardness, outstanding wear resistance, and superior overall mechanical properties, have emerged as critical materials underpinning precision machining, energy extraction, aerospace, and other key industries. With the global resource landscape undergoing profound restructuring and technological innovation accelerating, cemented carbides are evolving from “the teeth of industry” into a benchmark for high-strength materials, and their future trajectory will profoundly shape the transformation of high-end manufacturing value chains.

I. Resource Constraints and Policy Drivers: The “Era of Rigid Costs” for Cemented Carbides

Tungsten carbide (WC) and cobalt (Co), the core raw materials for cemented carbides, are highly scarce. As the world’s largest tungsten resource country, China has implemented stringent total-output control policies since 2025: the 2025 tungsten mining quota was reduced by 6.45% year on year, with a further 8% reduction in 2026. Coupled with the expansion of export controls, this has led to a sustained widening of the global tungsten supply–demand gap. Data show that in March 2026, the price of tungsten carbide powder surged to RMB 2,300 per kilogram, up 380% from the 2025 average, and is projected to exceed RMB 2,800 per kilogram by 2030.

The cemented carbide industry, where raw material costs account for more than 70% of total expenses, is currently undergoing a reshaping of its “cost-pass-through chain.” Leading companies have implemented multiple rounds of price hikes to shift cost pressures downstream, while downstream users—such as automotive and 3C electronics manufacturers—are relatively insensitive to price changes because tooling costs represent only 1%–5% of overall machining expenses, enabling smooth transmission of the price increases. For instance, performance forecasts for 2025 from firms like Huarui Precision and Oukeyi indicate substantial growth in both revenue and profit, underscoring strong demand support for high-end cemented carbides. This trend suggests that the cemented carbide sector has entered a rigid-cost era dominated by resource pricing power, with the industry’s value potential continuing to expand in tandem with rising raw-material prices.

II. Technological Breakthroughs: From “Scale Competition” to a “Performance Revolution”

The performance bottleneck of cemented carbides has long been constrained by the inverse relationship among hardness, toughness, and strength. The conventional approach of reducing cobalt content to enhance hardness results in a substantial decline in fracture toughness. In recent years, two breakthrough technologies have opened up new avenues for the industry:

1. Intrinsic Surface Defect Regulation Technology**

A team from Beijing University of Technology has discovered a two-dimensional defect within WC grains that is stabilized by a monolayer of titanium atoms. By precisely controlling the density of this defect distribution, they have increased the transverse rupture strength of cemented carbides to 4,840 MPa and the fracture toughness to 14.2 MPa·m¹/², thereby surpassing the performance of comparable products. This breakthrough, achieved through atomic-scale defect engineering, enables synergistic strengthening of the hard-phase matrix and provides a theoretical foundation for enhancing the strength and toughness of low-cobalt cemented carbides.

2. Nano-toughness Phase Coupling Design**

For low-cobalt systems, researchers have employed in-situ reaction synthesis to embed nano-sized cobalt-rich phases within the WC grains, thereby constructing a “hard phase–tough nanophase” coupled microstructure. Experimental results demonstrate that when the initial carbon content is 16.75 wt%, the alloy exhibits a Vickers hardness of 1920 kgf/mm² and a fracture toughness of 11.2 MPa·m¹/², with a significant reduction in the transgranular fracture fraction of WC. This strategy, by modulating the microscopic stress field, effectively resolves the traditional trade-off between hardness and toughness in conventional materials.

Meanwhile, coating technologies continue to evolve. A Nanjing-based company has developed a nano-multilayer coating that increases drill life by several times, while intelligent coating technologies achieve substantial gains in machining efficiency through dynamic parameter optimization. These innovations are driving the expansion of cemented carbides into extreme-environment applications such as aerospace and semiconductor manufacturing.

III. Expansion of Application Scenarios: The “Material Cornerstone” of High-End Manufacturing

The application scope of cemented carbides is continuously expanding in tandem with the upgrading of downstream industries:

1. New Energy Vehicles and 3C Electronics**

The surging demand for lightweight materials—such as aluminum alloys and carbon fiber—in new-energy vehicles has driven per-vehicle tool consumption to 2.5 times that of conventional internal-combustion-engine vehicles. Meanwhile, the trend toward miniaturization in the 3C electronics industry has sparked an explosive increase in demand for micro-drills and precision molds; in 2023, the global cemented-carbide mold market reached US$48 billion, with China accounting for 38% of the total.

2. Energy and Infrastructure Sectors**

In oil and gas extraction and geological exploration, cemented carbide rock-drilling tools have become the standard due to their exceptional impact toughness. In 2024, the Chinese rock-drilling-tool market reached RMB 15 billion, with a compound annual growth rate exceeding 9%. Moreover, the demand for wear-resistant components in sectors such as rail transit and offshore engineering is further driving the application of cemented carbides in extreme environments.

3. Aerospace and Semiconductors**

The demand for ultra-precision machining tools in the aerospace and aviation sectors is driving the transformation of cemented carbides into nanomaterials. In semiconductor manufacturing, cemented-carbide etching components, owing to their exceptional high-temperature and corrosion resistance, have become critical materials for core equipment such as lithography machines.

IV. Future Outlook: Dual-Drive Momentum of Sustainability and Intelligence

The future of cemented carbides will exhibit two major trends:

1. Green Manufacturing and Circular Economy**

In the face of resource constraints, the industry is accelerating the deployment of technologies for the recovery of scrap alloys. By implementing efficient purification and recycling processes, reliance on primary tungsten resources is being reduced. For example, one company has achieved a 90% utilization rate for scrap materials through a closed-loop production system, while simultaneously cutting energy consumption and emissions.

2. Intelligent Manufacturing and Personalized Customization**

Leveraging industrial internet platforms, leading enterprises have achieved end-to-end digitalization across the entire value chain, from material formulation to tool manufacturing. For instance, one company has connected over one million pieces of equipment to its “Smart Mold Cloud Platform,” using data analytics to optimize process parameters and shorten R&D cycles by 30%. Looking ahead, AI-driven materials genomics will further accelerate new-product development, meeting downstream demand for customized tools.

The evolutionary history of cemented carbides is a materials revolution that has progressed from “functional substitution” to “performance leadership.” Driven by both resource constraints and technological advancement, cemented carbides are reshaping the materials landscape of high-end manufacturing with higher strength, superior toughness, and broader adaptability. Looking ahead, their role will extend beyond the mere upgrade of “industrial teeth”; they will serve as a benchmark for advancing high-strength materials toward greater intelligence and sustainability.

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