The new cast hot work die steel (CHD steel) has high strength and toughness, high thermal stability, high lifetime and wide application prospects.
新型铸造热锻模具钢（CHD钢）由于具有较高的强韧性和高温稳定性，使用寿命高于锻造模具，具有广阔应用前景。
The steels can obtain better strength and toughness by subsequent air cooling after hot forging or rolling without any heat treatment.
本钢种无需经过任何热处理，经锻轧后空冷就能达到较好的强韧性。
In the same case of magnesium content the impact toughness of hot-rolled plates were higher than cold-rolled, while the cold-rolled plates had good tensile and yield strength.
在相同的镁含量的情况下，热轧板的冲击韧性明显高于冷轧板，而抗拉强度和屈服强度显著下降。
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