Jaw crushers, commonly used coarse crushing equipment in mining, construction materials, and metallurgical industries, rely heavily on the wear resistance of their core wear part—the jaw plate—which directly impacts equipment efficiency and maintenance costs. Therefore, selecting a high-wear-resistant and high-strength jaw plate material is crucial.

Currently, common jaw plate materials on the market mainly include high-manganese steel, medium-manganese steel, alloy cast iron, and composite materials. High-manganese steel (such as ZGMn13) is widely used for processing hard, large-sized ores due to its excellent wear resistance under strong impact loads, where its surface rapidly hardens. However, under low impact or fine crushing conditions, high-manganese steel cannot fully work-harden and wears out relatively quickly.

To address this, modified high-manganese steel (such as those with added Cr, Mo, Ti, and other alloying elements) or medium-manganese steel (containing 8%–12% manganese) exhibit a more balanced hardness and toughness, suitable for medium impact conditions. Furthermore, high-chromium cast iron or ceramic composite jaw plates possess extremely high hardness and wear resistance, making them particularly suitable for crushing highly abrasive materials, but their brittleness requires avoiding high impact loads.

Overall, in most conventional mining crushing operations, high-manganese steel jaw plates containing alloying elements offer a balance of wear resistance, toughness, and cost-effectiveness, making them the most durable and practical choice. For specific working conditions, material optimization should be performed based on material hardness, particle size, crushing ratio, and equipment operating parameters.  If necessary, dual-metal composite casting technology can be employed to create a jaw plate with a high-hardness working surface and a strong, tough base, significantly extending service life, reducing downtime for replacement, and improving overall production efficiency.