High-toughness tool steels are used when cracking, chipping, or sudden fracture are the primary failure modes. Where the breakage has already happened, the stage by stage causes and the examination sequence that separates them are set out on the tool and die failure analysis page<\/a>. In these applications, the tool usually breaks before it wears out, so the material must absorb impact loads, resist stress concentrations, and slow crack growth<\/a>.<\/p>\n\n\n\n Aobo Steel supplies high-toughness tool steel round bar and flat bar for impact tools, shear blades, forming dies, hot-work tooling, and fracture-sensitive industrial applications.<\/p>\n\n\n\nHigh-Toughness Tool Steels Available from Aobo Steel<\/h2>\n\n\n\n