The fixed jaw plate is the stationary wear component in a jaw crusher's crushing chamber, directly bolted to the frame. This 13% Hadfield manganese steel plate delivers 120-180 HB as-cast hardness and ≥800 MPa tensile strength, with impact toughness ≥150 J at 20°C.
The fixed jaw plate is a stationary wear liner mounted to the crusher frame, forming one side of the V-shaped crushing chamber. This plate is cast from Hadfield manganese steel with 13% Mn content, delivering 120-180 HB as-cast hardness and ≥800 MPa tensile strength. Under the repeated impact of primary crushing, the surface work-hardens to 450-550 HB while the core remains tough at ≥150 J impact energy. The plate fits Metso C series, Sandvik CJ series, and Terex JW series crushers, with a throughput capacity of 50-250 t/h depending on the closed-side setting and feed material. Each plate is dimensionally checked to ±2 mm on critical mounting surfaces.
Primary crushing plants processing granite, basalt, and recycled concrete face a common problem: wear plates that fail before their rated tonnage, causing unplanned downtime and inconsistent product size. This fixed jaw plate addresses that with a work-hardening surface that resists abrasion while the austenitic core absorbs tramp metal impacts without cracking. In construction waste recycling, the plate handles rebar-contaminated concrete without catastrophic fracture. In hard rock quarries, it maintains a consistent closed-side setting, reducing oversize recirculation. The 13% Mn grade is specifically suited to feed sizes up to 800 mm and compressive strengths up to 300 MPa.
Compared to standard 12% Mn plates, this 13% Mn fixed jaw plate offers 20-30% longer wear life in abrasive granite applications. The higher manganese content stabilizes the austenitic structure, allowing more complete work-hardening under load. The plate profile is optimized for a 15-20% reduction in peak crushing force compared to flat-profile plates, reducing stress on the toggle plate and frame. For operators running multiple crusher brands, the cross-compatible mounting pattern reduces spare parts inventory. Each plate ships with a mill certificate and dimensional inspection report.
