Selecting wear part material by feed condition
A practical look at how abrasion, impact and feed mix guide the choice between manganese steel, martensitic cast steel and high chrome iron.
Wear part material selection starts with the feed condition rather than the part name. Abrasion, impact and feed mix together determine which grade family is appropriate.
Austenitic high manganese steel work hardens in service and suits high impact feed such as car bodies and heavy scrap. High chrome alloy cast iron offers high abrasion resistance where impact load is controlled. High strength martensitic cast steel balances hardness with toughness for mixed feed, and chrome molybdenum alloy steel is used for pins, rotor caps and structural parts that carry shock loads.
This draft note will be expanded with a position-by-position selection table covering hammers, grids, liners and pins.