Armox 370T Class 1 combines good ballistic properties with excellent toughness. Hardness for Class 1 is 380–430 HBW for thicknesses up to 20 mm (0.78 in.). This datasheet provides information on composition, hardness, and tensile properties as well as fracture toughness. It also includes information on forming. Filing Code: SA-674. Producer or source: SSAB Weldox and SSAB Oxelosund AB.