Wear Resistant Steel Plate

NM500/NM550 Wear Resistant Steel Plate

NM500/NM550 high hardness wear resistant steel plate for chutes, hoppers, crusher liners and other heavy wear applications.

NM500 and NM550 sit at the high-hardness end of the abrasion family: 500-550 HBW nominal, for severe wear where softer plates simply wash away - think quartz-lined chutes, crusher liners and shot-blast equipment. The trade is real: toughness is lower than NM400, so design these parts for abrasion, not impact.

Grades and Standards

  • GB/T 24186 NM500 / NM550
  • AR500-class equivalents from other producers
  • Typical hardness 480-550 HBW (NM500), 530 HBW and up (NM550)

Sizes and Stock

  • Thickness 4-65 mm; widths 2000-2500 mm
  • Plasma and laser cutting; drilling with carbide tooling

Quality Documents

Per-plate hardness reports with EN 10204 3.1 MTC. Flatness is checked before dispatch - a warped liner is a re-fitting headache you do not want.

Where This Plate Goes

  • Crusher liners and grizzly bars
  • Hopper and chute linings handling sharp aggregate
  • Shot blasting cabinets and fan housings
  • Cement and mining transfer points

Questions Buyers Ask

Q: How much longer does NM500 last than NM450? A: Wear life tracks hardness in pure abrasion - expect meaningfully longer life in sharp, fast-moving material, but under heavy impact NM450 or NM400 resists cracking better. The failure mode decides, not the hardness number.
Q: Machining? A: Drill with carbide, cut with plasma or laser; avoid tapping deep threads - design bolt-through instead.
Send the wear profile photos if you have them - we have matched liners to failure modes for years and will tell you honestly which grade fits.