Aktívna norma | Vydaná: 23.04.2026

ASME STP-PT-025:2009

Extended Fatigue Exemption Rules for Low CR Alloys into the Time-Dependent Range for Section VIII Division 2 Construction

Dostupné jazyky: Anglicky

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Podrobné informácie

Označenie: ASME STP-PT-025:2009

Dátum vydania: 23.04.2026

Stránok: 65

Krajina: Americká technická norma

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Anotácia

A number of alloys have applications slightly into the creep range that are in cyclic service, such as process reactors. The 2007 edition of Section VIII, Div 2 provides allowable stresses for these materials, which may be controlled by creep properties. However, the fatigue design rules and fatigue exemption rules are not applicable, precluding construction of vessels using these materials at temperatures above 370°C (700°F). This report provides a simplified approach for exemption of low chrome alloys from fatigue analysis that are slightly into the creep range. See more

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