What is NM450 wear-resistant screen plate?
NM450 wear-resistant screen plates are wear-resistant plate components made from national standard NM450 steel plates through CNC punching or laser punching. Because they combine the high wear resistance of wear-resistant plates with the material screening function of screen plates, they are widely used in mining and metallurgy, coal washing, and quarry stone screening.
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NM450 chemical composition
| Brand | C | Si | Mn | P | S | Cr | Mo | Ni | B | CEV |
| NM450 | ≤0.26 | ≤0.70 | ≤1.60 | ≤0.025 | ≤0.015 | ≤1.50 | ≤0.05 | ≤1.0 | ≤0.004 |
NM450 Mechanical properties
| Material | Thickness(mm) | Strength of extension | Elongation | Impact energy(vertical) | BH(Brinell Hardness) | |
| ºC | Akv/J | |||||
| NM450 | 6-80 | ≥1250 | ≥7 | -20 | ≥24 | 420-480 |
Custom hole pattern service
Our high-quality perforated sheets offer exceptional performance to meet your material processing needs. We offer:
1.Precise measurement of material dimensions.
2.A variety of hole size options, including square, round, and hexagonal, to meet the specific requirements of your application.
3.Perforated sheets with various hole spacings to meet your needs.
| Hole Type | Aperture Range | Common Applications |
|---|---|---|
| Round Holes | 0.2–200 mm | Particle sizing, acoustic panels |
| Square Holes | 0.5–100 mm | Grain sorting, conveyor belts |
| Slotted (Long Holes) | 1×5–10×50 mm | Liquid filtration, mining screens |
| Hexagonal | 5–25 mm | Decorative façades, HVAC vents |
| Custom (Fish Scale, etc.) | Per client design | Specialized machinery guards |
Applications of NM450 wear-resistant screen plate
Mining and Quarrying Machinery: Screen plates and screen frames for vibrating screens and drum screens, used for classifying hard ores such as iron ore, copper ore, and granite, resisting continuous impact and cutting wear from large materials.
Coal and Power Industry: Screen plates for coal crushers in coal conveying systems of thermal power plants, screening devices at coal bunker discharge ports, and supporting screening components for scraper conveyors in underground coal mines, adaptable to high humidity and slightly corrosive environments.
Metallurgy and Building Materials Industry: Used for sintering machine hopper screening and cement raw/clinker screening equipment, maintaining screen aperture accuracy in the processing of metallurgical auxiliary materials (such as coke and limestone), preventing a decrease in screening efficiency due to wear.
Port and Logistics Handling: Protective screen plates for tippers and receiving pits in bulk cargo terminals, coping with the rapid throughput and impact of bulk materials such as coal and sand.
Specific applications
NM450 screen plate for screening crushed stone.
Advantages of NM450 wear-resistant screen plate
High wear resistance: Brinell hardness 420–480 HB, wear resistance 15–20 times that of ordinary low-carbon steel, effectively resisting cutting and impact wear from ores, sand, and other materials, maintaining screen hole shape and screening efficiency.
High strength and impact resistance: Tensile strength ≥1000 MPa, yield strength ≥800–950 MPa, not easily deformed or cracked while withstanding material impact, suitable for dynamic load scenarios such as vibrating screens and drum screens.
Good processability: Uniform microstructure in the quenched and tempered state, supporting laser/plasma cutting, bending (bending radius ≥2–3 times plate thickness) and welding (preheating required 150–200℃), facilitating the manufacture of complex screen plate structures.
Excellent cost-effectiveness: Compared to higher hardness grades (such as NM500/NM550), it is easier to process and lower in cost, and is sufficient to handle most medium-to-high intensity wear screening conditions (such as mining, building materials, and coal).
Why choose our NM450 wear-resistant screen plate?
GNEE has been established for nearly 20 years, with clients in over 180 countries. We provide high-quality wear-resistant steel plates and offer cutting, punching, welding, and bending services.Our wear-resistant screen plates combine high-quality materials with cutting-edge technology to deliver the critical performance and reliability required for screening applications.
Contact us now for a quote on NM450 wear-resistant screen plates.
FAQ:
What is the hole pattern on NM450 Perforated Screen Plate?
The 60° staggered is the most common pattern. Although other designs are available, 60° staggered is the strongest, most versatile and most economical perforated pattern.
What is the punching process?
The punching process is a metal, plastic, or paper fabrication technique where a machine press forces a shaped tool-the punch-through a workpiece and into a die. This shearing action punches out a scrap slug, leaving a clean hole or cutout of the exact shape of the die.
What is the difference between NM450 and Hardox 450?
NM450: NM450 is a wear-resistant steel grade produced by a variety of manufacturers. It does not have a specific brand name associated with it. Hardox 450: Hardox 450 is a brand of abrasion-resistant steel manufactured by SSAB, a Swedish steel company. Hardox is a well-known and widely used brand in the industry.