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NM450SP is a high-strength wear-resistant steel plate, also referred as super abrasion resistant steel, typically used in applications requiring exceptional resistance to wear and abrasion. Part of the NM (abrasion-resistant) steel series, the “450” denotes its Brinell hardness around 450, while “SP” usually indicates enhanced or specialized performance features. Thanks to its high hardness and wear resistance, NM450SP is ideal for heavy machinery, engineering equipment, and mining machinery.
A defining characteristic of NM450SP is the distribution of titanium carbide (TiC) nanoparticles within its matrix. These nanoparticles significantly boost wear resistance, making NM450SP approximately 1.6 times more wear-resistant than standard NM450 steel at the same hardness level. This enhancement arises from the ultra-fine TiC structure, which effectively disrupts wear particles’ movement paths, reducing surface wear and extending the steel’s lifespan. This feature makes NM450SP ideal for high-wear environments like heavy machinery and mining equipment.
1. Construction Machinery: Used in excavators, loaders, and bulldozers, especially in bucket blades, side walls, and base plates, NM450SP significantly improves wear resistance and extends the lifespan of such machinery.
2. Mining and Quarry Equipment: This steel is frequently used for mining machinery wear parts like crusher liners and grinding mill liners to endure high-wear environments such as ore processing.
3. Construction Industry: Applied in steel structures requiring wear resistance, like concrete pump pipes and hoppers. NM450SP helps reduce abrasion frequency and maintenance costs.
4. Steel Manufacturing Equipment: Utilized in chutes and conveyor pipelines for material transport, wear-resistant steel plates reduce frictional wear, thus enhancing equipment efficiency.
5. Recycling Industry: Used in recycling machinery, such as crushers and shears, NM450SP effectively minimizes wear during crushing and shearing processes.
| Steel Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (A50%) | Brinell Hardness (HBW) | Available Specification (mm) |
| NM450SP | ≥1100(1260) | ≥1300(1480) | ≥7(12.5) | 420~480(453) | 3.0~25.0×1000-2050 |
NM450 and NM450SP are both high-strength, wear-resistant steel plates, but they differ significantly in wear resistance, material structure, and application suitability.
1. Wear Resistance: NM450SP has a considerably higher wear resistance than standard NM450. NM450SP includes titanium carbide (TiC) nanoparticles in its matrix, enhancing its wear resistance by approximately 1.6 times over NM450 at the same hardness level. These TiC nanoparticles make NM450SP better suited for highly abrasive environments, such as mining equipment and heavy-duty machinery.
2. High-Temperature and Impact Resistance: NM450SP also outperforms NM450 in terms of high-temperature and impact resistance. It can maintain structural stability at temperatures up to 800°C without softening or deforming, whereas NM450 is generally suited for conditions not exceeding 400-500°C. This makes NM450SP ideal for extreme high-temperature and high-impact scenarios.
3. Processing Performance: Both NM450 and NM450SP offer good weldability and cuttability, but NM450SP’s stability allows it to maintain its properties under more demanding processing conditions. This makes NM450SP advantageous for complex structures that require cutting and welding.
