BY 
GENN
2026/06
Blog
Application of NM450 wear resistant steel plate
NM450 wear resistant steel plate is a high-strength abrasion-resistant steel with a nominal Brinell hardness of approximately 450 HBW. “NM” stands for Nai Mo (wear resistance in Chinese Pinyin), and “450” indicates its average hardness level.
It is produced through quenching and tempering (Q&T) or controlled heat treatment processes, providing an excellent balance of hardness, toughness, and impact resistance. NM450 is widely used in severe wear environments such as mining, construction, metallurgy, and heavy machinery industries.
2. Heat Treatment of NM450 wear resistant steel plate
NM450 steel plate is typically manufactured using:
- Quenching + Tempering (Q&T)
- High temperature tempering process
Key advantages after heat treatment:
- High surface hardness
- Excellent wear resistance
- Improved impact toughness
- Stable mechanical performance under heavy load
3. Chemical Composition of NM450 wear resistant steel plate
| Element | C | Si | Mn | P | S | Cr | Mo | Ni | B |
|---|---|---|---|---|---|---|---|---|---|
| Content | ≤0.26 | ≤0.70 | ≤1.60 | ≤0.025 | ≤0.010 | ≤1.50 | ≤0.50 | ≤0.50 | ≤0.004 |
Note: Composition may vary slightly depending on mill standard and thickness.
4. Mechanical Properties of NM450 wear resistant steel plate
| Property | Value |
|---|---|
| Brinell Hardness | 420–480 HBW |
| Tensile Strength | ≥ 1100–1300 MPa |
| Yield Strength | ≥ 900 MPa |
| Elongation | ≥ 10–18% (depending on thickness) |
| Impact Toughness | ≥ 24 J @ -20°C |
5. Available Size Range of NM450 wear resistant steel plate
| Item | Range |
|---|---|
| Thickness | 3 mm – 80 mm |
| Width | 1500 mm – 4020 mm |
| Length | 3000 mm – 18000 mm |
| Form | Hot rolled plate |
6. Key Features of NM450 Steel Plate
- Extremely high wear resistance (450 HBW grade)
- Excellent impact resistance under heavy load
- Good weldability (with proper preheating)
- High strength-to-weight ratio
- Long service life in abrasive environments
- Reduces maintenance and downtime costs
7. Applications of NM450 wear resistant steel plate
NM450 steel plate is widely used in industries where abrasion and impact are severe:
Engineering Machinery
- Excavator buckets
- Loader buckets
- Bulldozer blades
- Cutting edges and liners
Mining Equipment
- Crusher liners
- Hopper liners
- Ore chute plates
- Wear plates for conveyor systems
Construction Machinery
- Concrete mixer liners
- Cement plant wear parts
- Dust collector liners
Metallurgical Industry
- Sintering machine liners
- Steel plant conveyor bends
- Scraper conveyor plates
Power Industry
- Coal mill liners
- Coal hopper and chute systems
- Ash handling equipment
Other Applications
- Sand mills
- Port machinery wear parts
- Shot blasting machine liners
8. Advantages Compared to Standard Steel
NM450 offers 3–5 times longer service life compared with ordinary structural steel, significantly reducing:
- Equipment downtime
- Replacement frequency
- Maintenance cost
- Operational interruption
NM450 wear resistant steel plate is an ideal material for high-abrasion and high-impact working conditions. With hardness up to 450 HBW and excellent toughness, it is widely recognized as a cost-effective solution for extending equipment lifespan in heavy industries.
