硬质橡胶是一种具有高强度、高硬度、高模量以及良好无缺口抗冲击强度的特种橡胶制品。

Ebonite is one kind of special rubber product with high strength, high modulus, high hardness and fine unnotched impact resistance.

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与未加微量元素的试验钢相比，在硬度基本相同的情况下，无缺口冲击韧性和强度分别提高192 %和16 %，伸长率提高6 5 %。

Compared with the steel without adding trace elements, non breach impact toughness, UTS and elongation were increased by 192 %, 16 % and 65 % respectively, but hardness was not obviously changed.

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