Introduction ASME BPVC Section II Part A: Ferrous Material Specifications is a section of the ASME Boiler and Pressure Vessel Code (BPVC) that covers specifications for ferrous materials (primarily iron) used in the construction of boilers, pressure vessels and other pressure-retaining equipment. This section specifically addresses the requirements for steel and iron materials, including carbon […]
The reason for the ring-shaped crack at the pipe end of the SAE 4140 seamless steel pipe was studied by chemical composition exam, hardness test, metallographic observation, scanning electron microscope, and energy spectrum analysis. The results show that the ring-shaped crack of SAE 4140 seamless steel pipe is a quenching crack, generally occurring at the […]
Background & Introduction ASME SA213 T91, the steel number in the ASME SA213/SA213M standard, belongs to the improved 9Cr-1Mo steel, which was developed from the 1970s to the 1980s by the U.S. Rubber Ridge National Laboratory and the Metallurgical Materials Laboratory of the U.S. Combustion Engineering Corporation in cooperation. Developed based on the earlier 9Cr-1Mo […]
Introduzione Nel settore petrolifero e del gas, in particolare negli ambienti onshore e offshore, garantire la longevità e l'affidabilità dei materiali esposti a condizioni aggressive è fondamentale. È qui che entrano in gioco standard come NACE MR0175/ISO 15156 vs NACE MR0103/ISO 17495-1. Entrambi gli standard forniscono una guida critica per la selezione dei materiali in ambienti di servizio acidi. Tuttavia, comprendere […]
Introduction In industries such as power generation, oil and gas, petrochemicals, and refineries, seamless tubes are essential components, especially in equipment that must withstand extreme temperatures, high pressures, and harsh, corrosive environments. Boilers, heat exchangers, condensers, superheaters, air preheaters, and economizers use these tubes. Each of these applications demands specific material properties to ensure performance, safety, […]
Introduzione La selezione dei materiali è un passaggio fondamentale per garantire l'affidabilità, la sicurezza e le prestazioni delle apparecchiature in settori quali petrolio e gas, lavorazione chimica, ingegneria navale, aerospaziale e molti altri. Il materiale giusto può prevenire la corrosione, resistere a temperature estreme e mantenere l'integrità meccanica in ambienti difficili. Acciai e leghe come acciai al carbonio, leghe […]
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