NM400 VS NM450

some frequently asked questions about NM400 and NM450
    
    NM400 and NM450 are both wear-resistant steel grades manufactured by the Chinese company, Anyang Iron & Steel Group. As wear-resistant steel grades, they are commonly used to manufacture components and structures used in highly abrasive and corrosive environments, such as mining and transportation. The comparison between NM400 and NM450 can provide insight into their unique properties and benefits, to help users make informed decisions on choosing the right grade for their applications.
    
    Q. How do NM400 and NM450 differ in hardness?
    
    A. The hardness of NM400 and NM450 is defined by the Brinell Hardness Value (BHN). The BHN of NM400 is estimated from 360 to 440, while the BHN of NM450 is estimated from 410 to 490+. NM450 is known to have higher resistance to abrasion and wear and tear, compared to NM400.
    
    Q. What are the mechanical properties of NM400 and NM450?
    
    A. Mechanical properties are an important indicator of a material's strength, stiffness and resistance to deformation. NM400 has a yield strength of >=400MPa, a tensile strength of 800-1150MPa, and an elongation of >=20%. NM450, on the other hand, has a yield strength of >=450MPa, a tensile strength of 850-1200MPa, and an elongation of >=20%. When compared to NM400, NM450 has a higher yield strength and tensile strength.
    
    Q. What are the applications of NM400 and NM450?
    
    A. Both NM400 and NM450 have a wide range of applications, all of which are related to providing wear resistance in harsh, abrasive and corrosive environments. Common applications of NM400 and NM450 include components and structures exposed to wear and tear in the mining industry, such as bulldozer blades, ore chutes, liners for ball mills and trommel screens, abrasive materials handling equipment, and parts subject to extreme abrasion and corrosion in the transportation industry, such as conveyor belts and hoppers. They are also used in the construction industry to create wear-resistant parts and structures, such as buckets and blades in excavators, dredgers and shearers, as well as motor cases in bicycles and electric vehicles.
    
    Q. What are the advantages of NM400 and NM450?
    
    A. NM400 and NM450 provide excellent wear-resistant properties, which make them suitable for use in harsh and abrasive environments. NM400 and NM450 offer excellent impact and corrosion resistance, allowing them to handle materials with high abrasions and corrosions. NM400 and NM450 are also highly cost-effective, allowing for reduced maintenance costs and extended service life of components and structures. In addition, both grades are easy to process and form, which makes them suitable for fabrication into complex shapes and components.