High manganese steel shredder hammer

Manganese steel shredder hammers “self-polish” in the pin holes, which minimizes wear on the pin shafts.  In contrast, normal cast steel hammers, which some shredders use, don’t have this characteristic and can cause rapid wear on the pins.

Manganese steel also has a very high resistance to crack propagation. If operating conditions cause the yield strength in a region to be exceeded and a crack forms, the crack tends to grow very slowly. In contrast, cracks in low alloy steel castings tend to grow rapidly, which can lead to quick failure and the need for replacement.