SYMPOSIA PAPER Published: 01 January 1997
STP16589S

New Materials and Forgings Used for Pressure Vessels Operating in Hydrogen Environment

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To improve the in-service behaviour of Cr Mo (V) steel grades used for the pressure vessels operating in hydrogen environment at high temperature for the oil industry, the manufacture of heavy forgings needs a high quality. Improvement of the standard and enhanced strength (ASME Case 1960) 2 l/4 Cr 1 Mo steel grades may be achieved by reducing drastically the impurities (S, P, X, etc…) to extra low level and avoiding segregates at the inner surface of the shells. For high temperature operation, new V modified steel grades are proposed (ASME case 1961, Code Case 1973 and Code Case 2098). Their conventional mechanical properties are similar to those of enhanced strength 2 1/4 Cr 1 Mo but they offer higher creep properties and improved resistance to hydrogen damage.

Author Information

Bocquet, P
Centre de Recherche des Matériaux du Creusot, Creusot-Loire Industrie, Le Creusot, France
Cheviet, A
Creusot-Loire Industrie, Rive de Gier, France
Coudreuse, L
Centre de Recherche des Matériaux du Creusot, Creusot-Loire Industrie, Le Creusot, France
Dumont, R
Creusot-Loire Industrie, Le Creusot, France
Price: $25.00
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Details
Developed by Committee: A01
Pages: 3–17
DOI: 10.1520/STP16589S
ISBN-EB: 978-0-8031-5349-3
ISBN-13: 978-0-8031-2423-3