Tool Steel Grades Explained: D2, O1, H13 & More


Choosing the right tool steel can be the difference between long‑lasting, reliable tooling and premature failure on the shop floor. Grades like D2, O1, and H13 each offer a different balance of wear resistance, toughness, heat resistance, and machinability, so using the wrong one can drive up downtime and tooling costs. 

To understand the main tool steel families (cold‑work, hot‑work, high‑speed, shock‑resisting), see how D2, O1, and H13 compare in one table, and get clear guidance on which grade to use for punches, dies, molds, and cutting tools, read the full guide here: Tool Steel Grades Explained: D2, O1, H13 & More 

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