对A212-A（现为A515 Gr.60）钢制PVRC压力容器在110°F下的终端、爆裂型和失效进行了材料表征。对材料的化学成分、拉伸性能、断裂韧性（包括夏比V和撕裂能）、落锤无损检测、显微摄影和电子断口分析进行了表征。一个34英寸的。结果表明，长疲劳裂纹是由机械方面而非材料缺陷引起的，塑性失稳破裂、脆性运行和裂纹止裂完全符合断裂分析图。

A characterization of materials was conducted in relation to the terminal, burst-type, failure of a PVRC pressure vessel of A212-A (now A515 Gr. 60) steel at 110°F. Materials were characterized with respect to chemical composition, tensile properties, fracture toughness - including Charpy-V and Tear Energies, Drop-Weight NDT, micrography and electron fractography. The initiation and growth of a 34-in. long fatigue crack was shown to be caused by mechanical aspects rather than material deficiencies and the plastic-instability burst, brittle run, and crack arrest were in complete accord with the Fracture Analysis Diagram.