1.2581 Tool Steel Flat Bar featuring tungsten-molybdenum hot work steel with exceptional thermal fatigue resistance. Available in precision-milled finishes with tight tolerances from 5-150mm thickness. Offers superior heat checking resistance, excellent hot hardness up to 600°C, and remarkable wear resistance. Ideal for hot forging dies, die casting tools, extrusion tooling, and applications requiring exceptional resistance to thermal cracking and deformation.