High-Grade Manganese Steel Jaw Plate Metallurgy
GUBT’s manganese steel jaw plate replacements are engineered for high-impact primary crushing applications. Utilizing varying grades of modified Hadfield steel—including Mn14Cr2, Mn18Cr2, and Mn22Cr2—our liners are designed to exhibit optimal work-hardening characteristics. This metallurgical balance ensures the wear part maintains sufficient ductility to prevent cracking while the surface rapidly hardens under compressive crushing loads to resist abrasion.
Material Grade Selection and Work Hardening
The service life of a manganese steel jaw plate is dictated by the correct mating of material grade to the feed geology. Standard Mn14 offers reliable toughness for general low-abrasion applications, while Mn18 and Mn22 grades provide enhanced wear resistance for hard, abrasive ores. Through precise heat treatment and controlled water quenching, GUBT ensures a fully austenitic microstructure, allowing surface hardness to increase from an initial ~220 HB to over 550 HB during operation.
Tooth Profiles for Specific Applications
Selecting the correct tooth profile is critical for maintaining nip angle and optimizing the Closed Side Setting (CSS). We manufacture aftermarket plates in diverse profiles—including Super Tooth, Quarry, Corrugated, and Heavy Duty. These geometric designs are tailored to distinct crushing conditions, ensuring efficient gripping of material such as blasted rock or river gravel while minimizing slippage and localized wear zones in the crushing chamber.
Dimensional Accuracy and Installation
Proper fitment is essential to prevent premature failure of the wear part and the crusher toggle mechanism. GUBT’s engineering team leverages an extensive database to produce aftermarket liners strictly compatible with major crusher models, including C-Series™ and CJ-Series™ units. We ensure precision machining on back surfaces to guarantee proper seating against the frame, eliminating gaps that can lead to plate cracking or wedge damage.
GUBT Manufacturing Advantages
- Strict control of Carbon-Manganese ratios to maximize work hardening potential
- Optimized heat treatment cycles to prevent carbide precipitation and embrittlement
- Machined fit surfaces to ensure stability and reduce stress on the crusher frame
- Annual casting capacity of 20,000 tons ensuring consistent supply and lot traceability
Trust GUBT to deliver manganese steel jaw plate solutions that deliver predictable wear life and mechanical reliability. Contact us to determine the optimal alloy grade and profile for your specific crushing circuit.
