Tool Steel S7 Square Bar 1" square Retail Price

About S7|Shock-resistant tool steel. The highest impact toughness of any common tool steel. Designed for tools that take repeated heavy blows: chisels, punches, shear blades, and forming dies on heavy presses. Air-hardens to HRC 56-58 with exceptional resistance to chipping and cracking. Also has decent hot hardness, making it useful for some hot-work applications. Machines well annealed. Compare to H13 (better hot hardness, less impact resistance) and A2 (better wear resistance, less toughness).

About Square Bar|Solid square stock used for keys, keystock, spacers, and parts with flat reference surfaces. It's easier to clamp in a vise than round bar when you need to mill features on multiple sides.