Not all metallic lining materials perform equally. Under heavy abrasion and shock, standard steel degrades quickly. Wear resistant alloys, such as chromium carbide overlays, are formulated to endure high abrasion and extend service life in mining and bulk material handling.
Balancing Hardness and Impact Toughness
For metallic lining materials, hardness plays a major role in resisting abrasion. Generally, the harder the material, the better the wear resistance, hardness is usually measured by values such as Rockwell (HRC) or Vickers (HV). But higher hardness can also mean lower ductility, which makes the material less able to withstand heavy impact.
What Makes CCO Wear-Resistant?
The performance of wear-resistant alloys, such as chromium carbide overlay (CCO), comes from more than just their chemistry. While alloy elements like chromium, molybdenum, and vanadium provide the foundation, the real difference lies in how the material is structured. A refined microstructure, even carbide distribution, the right hardness, and an optimal carbide volume work together to deliver consistent wear life under the toughest mining conditions.
Types of Metallic Lining Materials
Quenched & tempered steels such as Abrasion Resistant (AR) plate such as Hardox, and Bisalloy provide high yield strength and toughness, making them suitable for structural applications, but they usually fall short in sliding abrasion. Weld overlay plates on the other hand, excel in sliding wear resistance yet often struggle with impact toughness. Our smooth CCO plates are engineered to overcome this traditional weakness, combining superior sliding abrasion resistance with improved impact resistance to deliver more balanced and reliable wear protection in demanding mining environments.
Real-World Applications and Value
From mining and steel to energy and agriculture, the link between durable liner materials and operational success is clear. It’s the difference between frequent shutdowns and reliable throughput, between high maintenance costs and predictable operations. Whether it’s a wear-resistant liner in a crusher ensuring consistent throughput, or a chute liner lasting longer to reduce maintenance, durable materials translate directly into higher efficiency on site.This isn’t just about making equipment last longer—it’s a strategic decision that drives down costs and puts your capital to work more effectively.
Choosing the Right Material
Wear-resistant alloys come in different forms, each with their own strengths and limitations.
Q&T steels, provide high strength and toughness, making them suitable for structural parts and areas with repeated impact, but they offer limited protection against sliding abrasion. Conventional CCO plates excel in handling constant abrasive flow in chutes, hoppers, and conveyors, though many struggle with impact resistance — which is why our smooth CCO plates are engineered to overcome this weakness through a refined microstructure, controlled carbide distribution, and balanced hardness.
With high hardness,Tungsten carbide hardfacing delivers extreme wear life in highly abrasive, low-impact applications, but its brittleness makes it less suited to high-impact zones. High chrome white iron provides exceptional hardness and wear resistance, and is widely used in mining wear parts such as liners, crusher plates, and wear blocks, where abrasion is severe and impact is moderate. In truly heavy impact environments, however, more ductile materials or composite designs are often required to prevent cracking.
The key to material selection lies in the specific balance of hardness, strength, and toughness unique to each material,ultimately, it is essential also to align material properties with the conditions at site. For further reading, see:
Analysis of Wear Resistance Liners for Increasing Life Cycle of Industrial Steel Part.
