The hardness of HARDO X400 vs mild steel hot rolled

    
    HARDOX 400 is an abrasion-resistant steel developed by SSAB, an industry leader in advanced steel solutions. It is intended for wear and impact-resistant applications that require a combination of both high strength and flexibility. The HARDOX 400 plate is designed for improved wear resistance and improved impact resistance, making it ideal for a wide range of applications that require both, such as earthmoving and beyond. In comparison, mild steel hot-rolled 750 is a medium carbon structural steel with a smoother surface finish than HARDOX 400. The 750 is slightly less resistant to abrasion, being more malleable and able to deform without breaking. This makes it more suitable for applications requiring worked areas that can easily be moulded, such as construction framing and piping.
    
    The HARDOX 400 is designed primarily for abrasion and impact resistance. Its extended service life (compared to mild steel) makes it the ideal choice for high-wear applications, such as tipper truck beds, concrete mixing bins, agricultural equipment, and more. The plate consists of a martensitic steel matrix reinforced with a high concentration of hard particles that disperse the stress of impact and abrasion, resulting in superior resistance to both.
    
    In comparison, mild steel hot-rolled 750 is designed primarily for general purpose work and is not intended for applications requiring wear resistance or heavy abrasion. It is ductile, making it suitable for forming constricted paths and can be heat treated to strengthen and harden its surface to a greater degree, though this is seldom necessary. While mild steel is resistant to corrosion, it is not as resistant as the HARDOX 400 and can easily rust if not coated or otherwise protected.
    
    Overall, the HARDOX 400 offers superior wear resistance, corrosion resistance, and impact resistance, making it the superior choice for heavy-duty applications. The mild steel hot-rolled 750, while less impact resistant, is malleable and easy to shape, making it suitable for lighter-duty applications where aesthetic appeal and forming ability are important. Of the two, HARDOX 400 is the superior choice for high-wear applications, while mild steel hot-rolled 750 is the better option for forming and creating structures with a better aesthetic appeal.