December 4, 2023
Hummer wear plates are categorized by hardness grade: NM 400, NM 450, NM 500, NM 550, NM 600 . This means that you will always be able to find a NM Hummer plate that meets your specific needs.
Hummer 400 and NM450 are versatile wear plates. Due to their high toughness, good bending and welding properties, they can also be used for load-bearing purposes in some applications.
NM500 is a bendable and weldable wear plate that can be used in applications where higher wear resistance is required.
NM550 is a wear-resistant steel plate with an average hardness of 550 HBW, which has the same toughness as NM500 and is used in high wear applications. It is aimed at users and manufacturers who use high manganese steel castings or wear-resistant steel plates with a Brinell hardness of 500. When upgrading from NM500 steel plates, there is a 50-unit increase in Brinell hardness, extending wear life without loss of plate toughness.
NM Hummer 600 is the hardest wear-resistant steel plate in the world, with a hardness value of 600 HBW. it is typically used in extremely abrasive applications and is primarily used as a replacement for cast steel, chrome-alloyed cast iron, and case-hardened metals. Despite its hardness, we are able to machine, weld and cut it. Despite its very high hardness, NM600 still has a fairly high impact toughness.