高耐磨，韧性和高温硬度。它主要用于挤出，压铸模具形状复杂的模具，等。

High wear resistence, toughness and hot hardness. It is mainly used for extrusing, die-casting mould and complex-shaped mould, etc.

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根据高温硬度随保载时间延长而变小这一事实，提出了“保载软化率”的概念。

The concept of "softening rate at sustained load" was suggested in accordance with the fact that the the hardness at high temperature decreases with the increase in holding time.

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H13 热作模具钢表面经激光熔覆钴基合金后显著提高了模具的高温硬度和热疲劳抗力。

With laser cladding Co-base alloy coatings, the high temperature hardness and thermal fatigue resistance of H13 hot-working die surface were appreciably increased.

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