NM400 wear steel equivalent
High Hardness, Low-Alloy Wear Steel X400High hardness, low-alloy (HH-LA) wear steel X400, is a high hardness–high toughness abrasion and impact-resistant wear steel. X400 steel is designed to perform as an economical alternative to regular high-hardness, low alloy (Hh-LA) alloys, like HIGH HARDO 400, 500, and 600.
X400 is different from regular Hh-LA alloys, as it contains additional elements such as magnesium, quartz, chromium, vanadium, and nickel for improved wear-resistant properties. The additional elements form a hardened surface on X400 steel and make it up to 3 times more wear resistant than regular Hh-LA alloys.
The additional alloying elements give X400 an increased ability to resist abrasion and impact damage, while maintaining a toughness that will protect the part throughout its working life. X400’s high hardness and ductile properties also make it suitable for use in applications where high stress levels are expected to occur.
The steel’s resistance to wear and abrasion is further improved when it is quenched and tempered. This allows the steel to achieve more strength and higher hardness values. After heat treatment, X400 can achieve a hardness of up to 700-800 HB.
X400 steel is often used in applications where abrasion resistance is key, such as earthmoving parts, agricultural components, and construction equipment. Its increased wear resistance also makes it suitable for light load-bearing applications, such as road construction and agricultural machinery.
Overall, X400 steel is designed to provide a cost effective alternative to conventional Hh-LA alloys for situations where wear resistance is needed. And, when quenched and tempered, X400 can reach hardness values of up to 700-800 HB, making it suitable for high duty wear applications.
