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SUMIHARD K-450 is a versatile, wear- and abrasion-resistant steel at 450 HBW that combines good bendability and weldability with guaranteed impact toughness.It can be used in many different components and structures that are subject to wear. SUMIHARD K-450 , with an extra 50 Brinell hardness over our 400 grade, provides better dent and abrasion resistance as well as longer wear life, so you can achieve even greater savings.SUMIHARD K-450 is an abrasion resistant steel with a nominal hardness of SUMIHARD K-450 . Typical applications are components and structures subject to wear. Available dimensions SUMIHARD K-450 are available in thicknesses of 3-130 mm. Both grades are available in widths up to 3350 mm and lengths up to 14630 mm. For widths ≤ 1600 mm and thicknesses between 3 and 6 mm, the preferred widths are 1500 or 1600 mm. For thickness over 80 mm the preferred width is 1650 mm.