NM450 steel plate is a high-strength abrasion resistant steel designed for medium to severe wear conditions. É amplamente utilizado em equipamentos de mineração, maquinaria de construção, fábricas de cimento, 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, resistência, and cost performance.

What Does “450” Mean in NM450 Steel?

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

$\text{NM450 hardness}\approx 420\text{para}480HBC$

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 alto desgaste + 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.

Dureza e resistência ao desgaste

Diferença Chave:

NM450 offers significantly better wear resistance due to higher hardness.

Dureza e resistência ao impacto

Diferença Chave:

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

Fabrication and Processing

Diferença Chave:

NM450 requires slightly more controlled processing due to higher hardness.

Comparação de vida útil

Diferença Chave:

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

• Estrutura martensítica fina
• Melhor resistência à deformação da superfície

Common Applications of NM450 Steel Plate

Indústria Mineira

• Baldes de escavadeira
• Revestimentos do britador
• Ore chutes
• Revestimentos de tremonha

Indústria de cimento

• Grinding systems
• Equipamento de alimentação de forno
• Calhas de transferência de materiais

Máquinas de construção

• Caçambas carregadeiras
• Lâminas de escavadeira
• Wear-resistant structural parts

Indústria Siderúrgica

• Equipamento para planta de sinterização
• Sistemas de manuseio de coque
• Conveyor wear plates

Manuseio de materiais a granel

• Forros de caçamba de caminhão
• Funis de armazenamento
• Calha de alimentação

Advantages of NM450 Steel Plate

• Higher wear resistance than NM400
• Bom equilíbrio entre dureza e tenacidade
• Suitable for medium to heavy abrasion conditions
• Boa soldabilidade e desempenho de fabricação
• Long service life in industrial environments

Limitations Compared to NM400

• Slightly lower toughness
• More difficult machining
• Not ideal for extremely high-impact-only applications
• Can rust without protective coating