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AISI H11 (DIN 1.2343) is one of the hot work chromium type tool steels belong to ASTM A681 standard. It has good strength in high temperature, excellent toughness and ductility in all z directions, excellent hardenability, and a high level of thermal shock and thermal fatigue resistance. AISI H11 steel can be deeply hardened by heat treatment and air quenching.

H11/1.2343 tool steel is a high-strength, high-toughness hot-work mold steel with excellent heat resistance and hardness, widely used in manufacturing high-quality molds, mold components, and tools ‌. Compared to other types of steel, H11 tool steel exhibits superior comprehensive performance, especially at high temperatures, maintaining its strength and toughness even below 600℃ ‌[High Temperature Performance]‌. Its chemical composition includes chromium, molybdenum, and vanadium, which contribute to its high hardness and wear resistance. While H11/1.2343 tool steel can undergo heat treatment processes like quenching and tempering to enhance its hardness and strength, it may impact its plasticity ‌[Heat Treatment & Plasticity]‌. Overall, H11 steel is particularly suitable for manufacturing molds requiring high precision and complexity due to its superior deformation ability and workability ‌[Suitability for Complex Molds]‌ .