BY 
GENN
2024/06
Blog
NM 500 Steel: An Abrasion Resistant Steel with 500HB
What is NM 500 Steel?
NM500 is a high-strength wear-resistant steel plate. In its name:
“NM”: stands for the first letter of the Chinese pinyin for “wear-resistant” (NaiMo).
“500”: indicates that the Brinell hardness value (HBW) of the steel plate reaches 470-540HBW (average of about 500HBW), which is an ultra-high hardness steel.
Implementation standard: mainly in accordance with GB/T 24186-2009 (or later versions), and some manufacturers implement corporate standards (such as Q/XGJ).
What you need to know about the properties of NM 500 abrasion resistant steel plate plates
| Grade | C | Si | Mn | P | S | Cr | Ni | Mo | Ti | B | Als |
| NM500 | ≤0.38 | ≤0.70 | ≤1.70 | ≤0.020 | ≤0.010 | ≤1.50 | ≤1.00 | ≤0.65 | ≤0.50 | 0.0005-0.006 | ≥0.01 |
| Mechanical properties of NM 500 | |||
| Grade | Mechanical Property | ||
| NM 500 | Tensile | Elongation | |
| Mpa | Min % | ||
| 1350 | 7 | ||
| Charpy V Impact Test | |||
| Degree | longitudinal | ||
| -20 / -40 | J | ||
| min 21 | |||
| NM500 | Thickness | Hardness (HB) | |
| ≤70mm | 420~480 | ||
| ＞70~100mm | 450~540 | ||
What are the uses of NM 500 wear resistant steel plates?
NM500 steel is designed for high-intensity wear environments. Typical applications include:
Mining machinery: wear-resistant parts such as crusher hammers, screen plates, and excavator bucket teeth.
Engineering machinery: bulldozer blades, loader bucket plates, and dump truck compartment liners.
Material conveying systems: chutes, scraper conveyor chain guards, and coal mill liners.
Other fields: metallurgical rollers, environmental protection equipment wear parts, cutting tools, and bearing components.
Benefits of AR500 Wear Resistant Steel
The hardness and toughness of AR500 abrasion resistant plates make them extremely wear and impact resistant. These properties make AR500 steel a durable, long-lasting material, which is critical for applications that require a material that can withstand extreme wear and tear.
AR500’s wear resistance steel plate durability also means that the material needs to be replaced less frequently than less wear-resistant materials, which can reduce material costs and prevent devastating equipment failures.
Comparison with other steel plates
NM 500 abrasion resistant wear plates stands out from other steel plates due to its excellent properties. Compared to mild steel, NM 500 is five times stronger and three times more wear-resistant. Compared to AR400 steel plate, NM 500 has better impact resistance and can withstand higher loads. It also has better weldability and machinability than other high-strength steel plates.
