ISO 21028-2:2018规定了在-20°C和-80°C之间使用的金属材料的韧性要求，以确保其适用于低温容器。本文件适用于具有规定屈服强度的细晶粒和低合金钢≤460 N/mm2，铝和铝合金、铜和铜合金以及奥氏体不锈钢。 注:对于EN 13445？2或EN 13480？2中列出的钢材料，或对于符合相同基本安全要求的钢材料和焊接件，根据EN 13445？2，低温下防止脆性断裂的要求: 2014年附录B方法2或EN 13480[UNK]2:2012附录B方法2可适用。

ISO 21028-2:2018 specifies the toughness requirements of metallic materials for use at temperatures between？20 °C and？80 °C to ensure their suitability for cryogenic vessels. This document is applicable to fine-grain and low-alloyed steels with specified yield strength ≤460 N/mm2, aluminium and aluminium alloys, copper and copper alloys and austenitic stainless steels. NOTE For steel materials listed in EN 13445？2 or EN 13480？2 or for steel materials and weldings complying with the same fundamental safety requirements, the requirements for prevention of brittle fracture at low temperatures according to EN 13445？2:2014, Annex B, method 2, or EN 13480？2:2012, Annex B, method 2 can be applied.