标准摘要
[中文适用范围]： 本文件规定了在-20℃至-80℃温度下使用的金属材料的韧性要求，以确保其适用于低温容器。 本标准适用于规定屈服强度≤460 N/mm2的细晶粒钢和低合金钢、铝及铝合金、铜及铜合金以及奥氏体不锈钢。 注：对于 EN 13445-2 或 EN 13480-2 中列出的钢材或符合相同基本安全要求的钢材和焊缝，根据 EN 13445-2:2014，附录 B 防止低温脆性断裂的要求，方法 2，或 EN 13480-2:2012，附录 B，方法 2 可以应用。 [外文原描述]： 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.
英文名称Cryogenic vessels — Toughness requirements for materials at cryogenic temperature — Part 2: Temperatures between -80 degrees C and -20 degrees C