Innovations in alloy metallurgy for furnace rolls and other high temperature applications

Book · Sun Dec 31 00:00:00 EST 1995

OSTI ID:233916

Agarwal, D C ^[1]; Brill, U; Kettler, H W; Giersbach, G ^[2]

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1. VDM Technologies, Houston, TX (United States)
2. Krupp-VDM GmbH, Werdohl (Germany)

For high temperature applications proper alloy selection is important for safety and economic reasons. Since all high temperature materials have certain limitations, the optimum choice is often a compromise between the mechanical property constraints (creep and stress-rupture strength), environmental constraints (resistance to various high temperature degradation phenomena), fabricability characteristics and cost. This paper presents the fundamentals of the role of various alloying elements and the utilization of this knowledge to develop a new high temperature alloy Nicrofer 6025HT, known as alloy 602CA (UNS N06025). This innovative development is characterized by superior creep and stress rupture strength properties up to 1,200 C with excellent resistance to cyclic oxidation, carburization, halogenization and nitridation type attack. This unique combination of strength and high temperature corrosion resistance has led to many applications such as furnace rolls in annealing furnaces, hangers in enamelling furnace, conveyor belts, muffles for bright annealing furnaces and other applications. This paper presents alloy 602CA`s various properties, and some design calculations along with long term experience with this alloy for uncooled furnace rolls and description of its technical and economical advantages over water cooled asbestos rolls currently used in industry.

• OSTI ID: 233916
• Report Number(s): CONF-950908-; ISBN 0-87170-539-7; TRN: IM9624%%34
• Resource Relation: Conference: 2. international conference on heat resistant materials, Gatlinburg, TN (United States), 11-14 Sep 1995; Other Information: PBD: 1995; Related Information: Is Part Of Heat-resistant materials 2. Conference proceedings of the 2. international conference on heat-resistant materials; Natesan, K. [ed.] [Argonne National Lab., IL (United States)]; Ganesan, P. [ed.] [INCO Alloys International, Inc., Huntington, WV (United States)]; Lai, G.Y. [ed.] [Haynes International, Inc., Kokomo, IN (United States)]; PB: 687 p.
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES
IRON ALLOYS
MECHANICAL PROPERTIES
OXIDATION
CARBURIZATION
NICKEL ALLOYS
CHROMIUM ALLOYS
ALUMINIUM ALLOYS
FURNACES
MATERIALS
CARBON ADDITIONS
YTTRIUM ADDITIONS
ZIRCONIUM ADDITIONS
TITANIUM ADDITIONS
CHEMICAL COMPOSITION
TEMPERATURE DEPENDENCE
TENSILE PROPERTIES
YIELD STRENGTH
CREEP
SERVICE LIFE
EXPERIMENTAL DATA