NM450 steel plate is a high-strength abrasion resistant steel designed for medium to severe wear conditions. Ini banyak digunakan dalam peralatan pertambangan, mesin konstruksi, tanaman semen, and material handling systems where both abrasion and impact resistance are required.

NM450 belongs to the NM series wear-resistant steels, which are commonly used in industrial fabrication due to their balanced hardness, kekerasan, and cost performance.

What Does “450” Mean in NM450 Steel?

The “450” refers to the approximate Brinell hardness level (PBR) of the steel.

$\text{NM450 hardness}\approx 420\text{ke}480HBW$

This means NM450 is:

• Harder than NM400
• Designed for higher wear resistance
• Suitable for medium to heavy abrasion environments

Chemical Composition of NM450 Steel

NM450 is a quenched and tempered alloy steel. Its exact composition may vary slightly, but typically includes:

The balanced alloy design ensures both wear resistance and structural toughness.

Main Properties of NM450 Steel Plate

NM450 is designed for keausan tinggi + moderate impact environments.

NM450 vs NM400 Steel Plate Comparison

NM450 and NM400 are both widely used wear-resistant steels, but NM450 provides higher hardness and better wear resistance.

Kekerasan dan Ketahanan Aus

Perbedaan Utama:

NM450 offers significantly better wear resistance due to higher hardness.

Toughness and Impact Resistance

Perbedaan Utama:

NM400 performs better in high-impact conditions, while NM450 focuses more on wear resistance.

Fabrication and Processing

Perbedaan Utama:

NM450 requires slightly more controlled processing due to higher hardness.

Perbandingan Kehidupan Pelayanan

Perbedaan Utama:

NM450 provides longer service life in more abrasive environments.

Why NM450 Has Better Wear Resistance

1. Higher Surface Hardness

• Stronger resistance to abrasion
• Slower material loss in friction environments

2. Optimized Alloy Design

• Chromium and molybdenum improve wear stability
• Balanced carbon content ensures hardness without excessive brittleness

3. Heat-Treated Microstructure

• Struktur martensit halus
• Improved resistance to surface deformation

Common Applications of NM450 Steel Plate

Industri Pertambangan

• Ember ekskavator
• Lapisan penghancur
• Ore chutes
• Liner hopper

Industri Semen

• Grinding systems
• Peralatan makan kiln
• Saluran perpindahan material

Mesin Konstruksi

• Bucket pemuat
• Bilah buldoser
• Wear-resistant structural parts

Industri Baja

• Peralatan pabrik sinter
• Sistem penanganan kokas
• Pelat keausan konveyor

Penanganan Material Massal

• Liner tempat tidur truk
• Hopper penyimpanan
• Saluran pakan

Advantages of NM450 Steel Plate

• Higher wear resistance than NM400
• Keseimbangan yang baik antara kekerasan dan ketangguhan
• Suitable for medium to heavy abrasion conditions
• Kemampuan las dan kinerja fabrikasi yang baik
• Long service life in industrial environments

Limitations Compared to NM400

• Slightly lower toughness
• More difficult machining
• Not ideal for extremely high-impact-only applications
• Bisa berkarat tanpa lapisan pelindung