Our A2 precision-ground tool steel square bar is an air-hardening alloy that provides a perfect combination of toughness and dimensional stability. These bars are primarily used for producing high-precision punches, dies, and structural blocks in the manufacturing sector. The precision-ground finish ensures the square bar is perfectly true and within tight tolerances for immediate use in your projects. A2 is highly valued for its ability to maintain its shape during heat treatment, ensuring your finished parts are accurate. Onlinemetals.com provides precision-ground A2 square bars to support your most exacting toolroom and engineering tasks.